Explanation:
Because of the short length of the carbon-14 half-life, carbon dating is only accurate for items that are thousands to tens of thousands of years old. Most rocks of interest are much older than this. Geologists must therefore use elements with longer half-lives.
Answer: Because of the short length of the carbon-14 half-life, carbon dating is only accurate for items that are thousands of years old. Most rocks that scientists study are much older than thousands.
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new york is underlain by metamorphic rock. the photo below shows an outcrop of rock in central park that contains many thin sheets. is this rock foliated or nonfoliated?
The rock outcrop in Central Park appears to be foliated. This is because it contains many thin, parallel sheets of rock, which is an indication of foliation.
Foliation occurs when a rock has been subjected to intense pressure and heat over a long period of time, which causes the minerals within the rock to form into thin layers. This type of foliation is known as schistosity and is a common feature of metamorphic rocks.
The foliation of the rock outcrop in Central Park suggests that it has been subjected to the kind of intense pressure and heat that is necessary to form schistose-type foliation, which is consistent with the fact that it is part of the metamorphic rock that underlies New York.
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(multiple choice) the geologic material(s) most commonly associated with earth failures are .
The geologic materials most commonly associated with earth failures are clay minerals. option 2 is correct.
Clay minerals: clay mineral is natural or synthetic, might include non-phyllosilicates, without size criterion, plastic, and hardens on drying or firing. The clay minerals consist of essential elements like silica, magnesia or alumina, or both, and water, but iron substitutes for aluminum and magnesium in varying degrees, and appreciable quantities of potassium, calcium, and sodium are frequently present as well.
Geological materials are the material extracted as-is from the earth in sediment or rock form, including rocks, sands, clays, limestone, and other industrial minerals. Earth failures are falling, exfoliating, sliding, and toppling.
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The complete question is -
The geological materials most commonly associated with earth failures are?
options
1. quartz
2. clay minerals
3. granite
4. basalt
explosive volcanoes tend to occur at which type of plate boundary?
Explosive volcanoes tend to occur at convergent plate boundaries.
Volcanoes that erupt explosively are known as explosive volcanoes.
These volcanoes eject ash, gas, and rocks high into the air during their eruptions, resulting in the formation of pyroclastic flows, which are dense collections of hot ash, rock fragments, and gas that flow down the slopes of the volcano.
A boundary where two tectonic plates come together and interact is known as a convergent plate boundary.
Convergent plate boundaries are characterized by the fact that one plate is typically forced beneath the other as they collide, resulting in the formation of a subduction zone.
Explosive volcanoes tend to occur at convergent plate boundaries. At convergent plate boundaries, two plates come together, and one is forced beneath the other.
When the lower plate sinks into the hot mantle, it causes melting, and this molten rock rises to the surface, forming a volcano.
The most explosive volcanoes are those that occur at subduction zones because the magma that rises to the surface is rich in water and other volatile elements, making it more explosive when it reaches the surface.
Some examples of explosive volcanoes include Mount St. Helens in the United States, Mount Fuji in Japan, and Mount Pinatubo in the Philippines.
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which of the following are types of pyroclastic debris? choose one or more: a. lapilli b. lava c. blocks d. ash e. magma f. gas g. lahar
The types of pyroclastic debris include the following: a) lapilli, d) ash, c) blocks, and g) lahars.
What are Types of Pyroclastic Debris?Lapilli are small fragments of volcanic debris with a size range between 2 mm to 64 mm. Ash is fine volcanic debris with a size less than 2 mm. Blocks are large, solid pieces of volcanic material that can be greater than 64 mm.
Lahars are mudflows composed of volcanic material mixed with water. Lava, magma, and gas are not considered pyroclastic debris since they are not ejected explosively during volcanic eruptions but rather flow out of the volcano in a more controlled manner.
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can you identify the minerals that comprise igneous rocks? drag the appropriate labels to their respective targets. the specific colors of the referenced mineral crystals within the rocks have been supplied to assist you. labels will only be used once, and not all labels will be used.\
Igneous rocks are made up of different minerals depending on the type of rock. The most common minerals found in igneous rocks are quartz, feldspar, mica, hornblende, and pyroxene. Quartz is usually colorless or white, feldspar can be white, pink, or gray, mica can range from green to brown to black, hornblende is usually black or green, and pyroxene is usually black.
Granite is an example of an igneous rock that contains quartz, feldspar, mica, and hornblende. Basalt is an example of an igneous rock that contains feldspar, pyroxene, and sometimes olivine. Peridotite is an example of an igneous rock that contains olivine, pyroxene, and sometimes hornblende.
The minerals in igneous rocks can be identified using a variety of methods including color, hardness, streak, luster, and cleavage. Color can be used to distinguish between different minerals; quartz is usually colorless or white, feldspar is usually pink, gray, or white, mica is usually green, brown, or black, hornblende is usually black or green, and pyroxene is usually black.
Hardness is another way to distinguish between different minerals. Quartz is the hardest mineral and has a hardness of 7 on the Mohs scale. Feldspar is slightly softer with a hardness of 6, mica has a hardness of 2-3, hornblende has a hardness of 5-6, and pyroxene has a hardness of 5-6.
The streak of a mineral is the color it leaves when scratched on a streak plate. The streak of quartz is white, the streak of feldspar is white or gray, the streak of mica is white, the streak of hornblende is black, and the streak of pyroxene is black.
Luster is another way to identify different minerals. Quartz has a vitreous luster, feldspar has a pearly or dull luster, mica has a pearly or silky luster, hornblende has a vitreous or pearly luster, and pyroxene has a vitreous or dull luster.
The cleavage of a mineral is how it breaks when it is struck or compressed. Quartz has no cleavage, feldspar has two directions of cleavage, mica has one direction of cleavage, hornblende has two directions of cleavage, and pyroxene has two directions of cleavage.
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what would you expect weather to be like on the eastern coast of australia if the western coast of south america were experiencing unusually warm, wet weather?
If the western coast of South America is experiencing unusually warm and wet weather, you would expect the weather on the eastern coast of Australia to be cooler and drier. This is due to the El Niño-Southern Oscillation (ENSO) phenomenon, which affects global weather patterns.
What is El Niño-Southern Oscillation?
El Niño-Southern Oscillation is a phenomenon that occurs when the ocean temperatures in the equatorial Pacific Ocean change from their normal temperatures. It occurs every three to seven years and lasts between one and two years.
The change in ocean temperature causes the trade winds, which usually blow from east to west, to slow down or reverse direction. When the trade winds slow down or reverse, it causes a buildup of warm water in the eastern Pacific Ocean, leading to El Niño. During an El Niño, the Pacific Ocean's warm surface waters move eastward towards South America, leading to unusually warm and wet weather on the western coast of South America.On the other hand, when the trade winds are stronger than usual, the ocean currents become stronger, leading to colder ocean temperatures in the eastern Pacific Ocean. This is known as La Niña, and it results in cooler and drier weather on the western coast of South America.
What is the effect of El Niño-Southern Oscillation on Australia?
Australia's weather patterns are also affected by El Niño-Southern Oscillation. During an El Niño event, Australia typically experiences drier and warmer weather conditions, especially in the eastern parts of the country. However, during a La Niña event, Australia typically experiences wetter and cooler weather conditions.El Niño-Southern Oscillation is a significant weather phenomenon that affects global weather patterns, including the weather on the eastern coast of Australia. If the western coast of South America is experiencing unusually warm and wet weather, you would expect the weather on the eastern coast of Australia to be cooler and drier.
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kilaunea is not as explosive as the eruption of mt st helens. what is the overall control that dictates this differnecec
Kilauea is not as explosive as the eruption of Mt. St. Helens due to the difference in magma viscosity and gas content. The overall control that dictates this difference is magma composition and gas content.
The magma composition of Kilauea is primarily basaltic, which has a low viscosity, and gas content is less than that of Mt. St. Helens. Due to these properties, the lava can flow easily and doesn't create any blockages or blockage pressure. Hence, the eruption is effusive and not explosive. The effusive eruption leads to slow-moving lava flows that do not have the potential to be very destructive.
On the other hand, Mt. St. Helens has an andesitic composition, which has a higher viscosity and more gas content. It leads to the creation of blockages within the vent of the volcano, which ultimately leads to an explosive eruption. When the pressure built up inside the vent due to the blockage, it eventually led to an explosive eruption.
The difference in the viscosity of magma, and gas content is an overall control that dictates the difference between the two volcanoes' eruption. Therefore, it is concluded that the difference in magma composition and gas content is responsible for the difference in the explosiveness of Kilauea and Mt. St. Helens' eruption.
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berkeley, ca has the highest amount of precipitation during the question 36 options: summer. autumn. winter. spring.
Berkeley, CA has the highest amount of precipitation during winter.
What is precipitation?Precipitation refers to the process by which water vapors in the atmosphere are converted into water droplets and fall to the ground as rain, snow, hail, or sleet. Precipitation can be further classified into three types: convective precipitation, orographic precipitation, and frontal precipitation.
These types of precipitation have different causes and occur under different circumstances. Precipitation is essential for the growth and survival of plants, animals, and humans. Precipitation also plays an important role in shaping landscapes and ecosystems.
The climate of Berkeley, CAThe climate of Berkeley, CA, is Mediterranean, with mild, wet winters and dry summers. In winter, the average temperature is around 11°C (52°F), while in summer, it is around 18°C (64°F). The average annual precipitation in Berkeley is around 62.2 cm (24.5 in).
The wettest months are November through March, while the driest months are June through September. The temperature in Berkeley is mild throughout the year, with little variation from month to month. Overall, Berkeley has a pleasant climate that is ideal for outdoor activities and tourism.
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which rock type most suggests possible deposition by energetic mountain streams? group of answer choices shale conglomerate greywacke well-sorted, quartz-rich sandstone
The rock type that most suggests possible deposition by energetic mountain streams is greywacke.
What's GreywackeGreywacke is a sedimentary rock composed of coarse-grained quartz and feldspar fragments, commonly mixed with clay and silt. It forms when eroded materials are transported by high-energy streams, such as mountain streams, and deposited in a deep-water environment.
It is characterized by sharp angular grains and is usually poorly sorted. Common minerals in greywacke include quartz, feldspar, mica, and accessory minerals like magnetite and tourmaline.
In addition, greywacke is often found with shale, conglomerate, and well-sorted quartz-rich sandstone, which are all sedimentary rocks formed in a similar manner.
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which of the following are foliated intermediate- or high-grade metamorphic rocks that would form in the setting in part 1? choose one or more: a. phyllite b. schist c. marble d. slate e. gneiss f. hornfels
In the environment, foliated intermediate- to high-grade metamorphic rocks called gneiss would form.
Which of the above is a foliated rock of high or intermediate metamorphic grade?Slate, phyllite, schist, & gneiss are the several types or foliated metamorphic rocks, ordered by of the grade or severity of metamorphic rocks and the type of foliation.
Metamorphic rocks of intermediate grade also contain garnet and mica. At 800 degrees Celsius, high grade metamorphic stones develop in regions that are so hot they virtually melt. Sillimanite, a mineral that is commonly found inside the rock gneiss, is one that develops in this extreme heat.
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wildfires may spread in three ways: slowly along the ground, as a wall of fire along a flaming combustion front, or as a(n
Wildfires may spread in three ways slowly along the ground, as a wall of fire along a flaming combustion front, or as a crown fire.
A wildfire is an uncontrollable fire that burns in the wilderness. It is sometimes referred to as a forest fire, bushfire, or grass fire because it typically happens in wooded areas, grasslands, and shrublands. Three ways in which wildfires can spread are mentioned below:Slowly along the ground:
The fire creeps slowly along the ground, burning up dead leaves, branches, and twigs. It is the slowest mode of propagation, with an average speed of 0.5 mph.Wall of fire: When a combustible substance is ignited, the fire spreads in the form of a wall of flames. When a fuel source is present, the fire spreads faster and with greater intensity.
Crown fire: It occurs when the flames reach the treetops. It may be caused by windborne embers, spotting, or surface fire that progresses upward. Crown fires can spread rapidly, spreading embers over a considerable distance.
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precipitation of gypsum due to evaporation of seawater produces which kind of sedimentary rock? group of answer choices biochemical chemical clastic organic
Clastic sedimentary rock is formed when precipitation of gypsum due to evaporation of seawater occurs.
Clastic sedimentary rock is formed when fragments of pre-existing rocks or minerals are compacted and cemented together. Clastic sedimentary rocks are formed from the accumulation and consolidation of fragments of pre-existing rocks or minerals, which are transported and deposited by various agents such as water, wind, or ice. Examples of clastic sedimentary rocks include sandstone, shale, and conglomerate.
Gypsum is a mineral that can be precipitated from evaporating seawater, but it does not form clastic sedimentary rock. Gypsum can form chemical sedimentary rocks, such as rock gypsum or alabaster.
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the earth's lowest barometric pressures are associated with hurricanes (typhoons). frontal systems (cold and warm fronts). sea level. cold and dry climates. very cold temperatures.
The Earth's lowest barometric pressures are associated with hurricanes (typhoons).
What are hurricanes (typhoons)?
Hurricanes or typhoons are severe tropical storms characterized by low atmospheric pressure, heavy rain, and strong winds. In the West, hurricanes are called typhoons in the East. Such storms develop in the Atlantic Ocean, Gulf of Mexico, and the Caribbean Sea in the United States.
Typhoons are formed in the Pacific Ocean, especially in Japan and the Philippines.
What is barometric pressure?
Barometric pressure is a measure of air pressure that varies from location to location. The pressure exerted by the weight of the atmosphere on the Earth's surface is known as barometric pressure.
The barometric pressure is measured in units of mercury millimeters (mmHg) or inches of mercury (inHg) in the United States, as well as in millibars (mb) or kilopascals (kPa) in other countries. The Earth's lowest barometric pressures are associated with hurricanes (typhoons).
Hurricanes (typhoons) are storms characterized by low atmospheric pressure, heavy rain, and strong winds. When such a storm passes through an area, it causes the barometric pressure to decrease, resulting in the lowest barometric pressures.
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why might this be? (hint: what processes in both living and dead trees produce co2 ?) tropical rain forests also produce co2 due to living trees' respiration and decomposition of dead trees. due to this fact, relative consumption of co2 is not as great as has been expected.
Tropical rain forests produce CO2 due to both the respiration of living trees and the decomposition of dead trees. This leads to a lower relative consumption of CO2 than is expected.
Both living and dead trees contribute to the production of carbon dioxide (CO2) through respiration and decomposition processes. Living trees release CO2 through cellular respiration, which is the process by which they use oxygen to convert sugars into energy. Dead trees also release CO2 as they decompose, either through the action of microorganisms or through physical processes like wind and erosion.
While it's true that tropical rainforests produce CO2 through respiration and decomposition, they also play an important role in removing CO2 from the atmosphere through photosynthesis. Trees absorb CO2 from the air and use it to build their cells and grow, releasing oxygen as a byproduct. This process helps to offset the CO2 produced by other sources, such as human activities.
However, the extent to which tropical rainforests are able to absorb and sequester CO2 depends on a variety of factors, including the density and diversity of the forest, the health of the trees, and the availability of nutrients and water. Additionally, deforestation and other human activities that destroy or disrupt rainforest ecosystems can greatly reduce their ability to act as carbon sinks.
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the giant planet that has an axis that points roughly straight up, and thus has no seasons to speak of, is:
The giant planet that has an axis that points roughly straight up, and thus has no seasons to speak of, is Uranus.
Uranus is the giant planet that has an axis that points roughly straight up, and thus has no seasons to speak of. Uranus is the seventh planet from the Sun, and it was the first to be discovered by means of a telescope. It's also the third-largest planet in terms of diameter, and it's the fourth-most massive.
Uranus is also distinctive in that it is the only planet in the solar system that has an axis that is nearly perpendicular to the plane of its orbit. In addition, Uranus is primarily composed of hydrogen, helium, and methane, which accounts for its pale blue color. Uranus' atmosphere contains bands of clouds that are made up of methane crystals. The planet also has an extensive system of rings and a multitude of moons orbiting it.
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true or false: the northern hemisphere of mars experiences long cold winters. question 1 options: true false
The answer is True.
The northern hemisphere of Mars experiences long, cold winters due to the planet's axial tilt and its elliptical orbit around the sun. During Martian winter, the polar regions can experience temperatures as low as -195 °F (-125 °C).
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QUIZ:
Differing Viewpoints answers
1. corruption and ethnic conflict
2. ethnic conflict
3. pollution of the air and destruction of plants and animals
4. iron ore diamonds and natural gas
5. palm oil
6. exploiting the colonies for profit
7. Portugal
8. Central African Republic
9. Men and women eat in separate rooms.
10. poor transportation system,
limited educational system and minimal modern health care. your welcome :)
The main circumstance which most Central African nations experienced since gaining independence is problem of corruption and ethnic conflict. The Option 1 is correct.
How do corruption and ethnic conflict affect Central African nations?Corruption has been a major issue in many African countries, with government officials and business leaders embezzling public funds and engaging in other forms of corrupt practices. This has led to widespread poverty, economic stagnation, and political instability.
Ethnic conflict has also been a recurring problem in many Central African nations, often fueled by political or economic competition between different groups. These conflicts have led to displacement, violence, and loss of life.
Also, poor transportation systems, lack of infrastructure, and other development challenges have also been prevalent issues in the region. While some countries have experienced resource booms from minerals such as diamonds and natural gas, many have struggled to benefit from their natural resources due to corruption and mismanagement.
Full question "Which circumstances have most Central African nations experienced since gaining independence? 1. corruption and ethnic conflict 2. ethnic conflict 3. pollution of the air and destruction of plants and animals 4. iron ore diamonds and natural gas 5. palm oil 6. exploiting the colonies for profit 7. Portugal 8. Central African Republic 9. Men and women eat in separate rooms. 10. poor transportation system"
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where do you weigh more--at the bottom of death valley or atop one of the peaks of the sierra nevada? defend your answer.
which must be true if mars was warmer and wetter in the past? group of answer choices mars was once much closer to the sun. mars once had a much thicker atmopshere mars must somehow have avoided the effects of the heavy bombardment. the sun was much brighter when it was younger.
If Mars was warmer and wetter in the past, the following must be true: Mars once had a much thicker atmosphere. The correct option is "Mars once had a much thicker atmosphere.
Mars is a terrestrial planet that is the fourth from the Sun in the Solar System. Mars is smaller than Earth, but it is still one of the planets that scientists are interested in exploring. It is a cold and desert-like planet now, but it was once warmer and wetter.
The atmosphere of Mars is one of the primary reasons for its present-day state. The Martian atmosphere is very thin and has a lower pressure than Earth's atmosphere.
Mars' magnetic field was destroyed four billion years ago by an intense solar storm, leaving the planet unprotected from the Sun's radiation. Mars has a thinner atmosphere today than it did in the past.
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would you expect as many impact craters per unit area on the surface of venus as on the surface of mars? why or why not?
The answer to this question is no, we would not expect as many impact craters per unit area on the surface of Venus as on the surface of Mars. The reason for this is because Venus has a much thicker atmosphere than Mars, which acts as a shield that protects the surface of the planet from incoming objects.
Additionally, Venus has a much stronger gravity than Mars, which pulls objects that enter the atmosphere back towards the planet rather than letting them reach the surface. This further reduces the amount of impact craters on the surface of Venus.
In comparison, Mars has a much thinner atmosphere, which does not provide as much protection from incoming objects. The weaker gravity also means that objects that enter the atmosphere have a much better chance of reaching the surface of the planet. This contributes to more impact craters forming on the surface of Mars.
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which of the following climate types is found at the highest latitudes? marine west coast humid subtropical subtropical steppe mediterranean midlatitude desert
The climate type found at the highest latitudes is marine west coast.
What is climate?
Climate is the long-term forecast of a particular region or location's average temperature, humidity, and rainfall. A range of meteorological variables, including temperature, rainfall, atmospheric pressure, and winds, contribute to the world's different climates.
The marine west coast climate is a climate type that is found at the highest latitudes. A marine west coast climate is a type of oceanic climate, which is found in the western portions of the subtropical and middle latitudes. It is typically characterized by moist air masses with high rainfall amounts and mild to cool temperatures. Marine west coast climate is the typical climate in most areas of western Europe, as well as in the Pacific Northwest region of North America. The following are the key features of a marine west coast climate:
Mild winters, with an average temperature above freezing and little to no snowfall.Average temperatures in the summer are cool, with highs averaging in the mid-60s (18-20 °C).Year-round precipitation, with frequent rainy and cloudy days. The average yearly precipitation is more than 50 inches (1,250 mm).Foggy conditions are common, especially near the coast, which may result in low visibility.To know more about highest latitudes climate refer here:
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for a surface low pressure system to intensify, where must the upper-level trough be located relative to the surface low? group of answer choices north of the surface low south of the surface low west of the surface low east of the surface low directly above the surface low
For a surface low pressure system to intensify, the upper-level trough must be located to the west of the surface low. Therefore the correct option is option C.
A low-pressure system is a location on Earth's surface where the air pressure is lower than that of surrounding locations. As air moves away from a low-pressure area, it rises and cools, generating clouds and potentially precipitation.
The cyclonic flow of the air around a low-pressure area, where the air is flowing counterclockwise in the Northern Hemisphere, is another feature of a low-pressure area.
The airflow toward the low-pressure area at the surface is pulled inward and upward, resulting in air rising and the production of clouds, rain, and other weather events. Therefore the correct option is option C.
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The following question may be like this:
For a surface low pressure system to intensify, where must the upper-level trough be located relative to the surface low? group of answer choices
north of the surface low
south of the surface low
west of the surface low
east of the surface low
directly above the surface low
hurricane formation is most likely where there is little wind shear, some coriolis force to provide spin, and what else?
Hurricane formation is most likely to occur in areas where there is a combination of warm ocean waters (at least 26.5°C or 80°F) and light upper level wind shear (winds that blow in different directions and at different speeds at different heights in the atmosphere).
Coriolis force is also necessary to provide spin to the hurricane, and in order to provide fuel to the hurricane, there must also be an area of thunderstorms, an atmospheric pressure deficit, and moist air.
To summarize, hurricane formation requires warm ocean waters, light upper level wind shear, Coriolis force, an area of thunderstorms, an atmospheric pressure deficit, and moist air. These are usually monitored and studied by ecologists from all over the world.
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which of the following primary pressure areas are produced by thermal factors, rather than dynamic factors? question 62 options: equatorial low and polar high equatorial low and bermuda high aleutian low and icelandic low subtropical high and subpolar low
The answer is: Equatorial low and polar high.
These two areas are primarily influenced by temperature differences, which are a type of thermal factor, rather than dynamic factors such as the movement of air masses.
As the river approaches sea level, the gradient ______.
As the river approaches sea level, the gradient decreases.
The gradient of a river is defined as the slope or steepness of the river. It is usually expressed in terms of the river's elevation changes per unit distance. When a river's gradient is steep, the river flows faster and carries more sediment. As a river flows from its source to its mouth, its gradient decreases.
When a river reaches its mouth, it is at sea level and its gradient is extremely gentle. The gradient of a river determines its erosional power, transport capacity, and deposition capacity. A river's erosional power and transport capacity are determined by its gradient, velocity, and discharge, while its deposition capacity is determined by its velocity and discharge.
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he san andreas fault is... group of answer choices associated with deep focus earthquakes a world-famous example of a hot spot is an intraplate fault within the juan de fuca plate an oceanic transform fault a continental transform fault
The San Andreas Fault is a continental transform fault, which is a type of fault that occurs at the boundary between two tectonic plates.
The San Andreas Fault marks the boundary between the Pacific Plate and the North American Plate. The two plates slide past each other horizontally in opposite directions. As the plates move, they cause earthquakes with deep focus, which are powerful earthquakes that occur far beneath the surface.
An example of a world-famous hot spot is the Hawaii Islands, which form due to magma rising up from the Earth's mantle. This is a form of intraplate volcanism, which occurs at locations that are not on tectonic plate boundaries. In contrast, transform faults are located on plate boundaries, and the San Andreas Fault is a prominent example.
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the lowest surface air pressures ever recorded are associated with question 64 options: frontal systems (cold and warm fronts). hurricanes (typhoons). cold and dry climates. sea level.
The lowest surface air pressures ever recorded are associated with frontal systems (cold and warm fronts).
Frontal systems refer to the boundary between two air masses with different temperatures, densities, or moisture content.
As a result, these areas frequently experience thunderstorms and even tornadoes. Cold fronts, warm fronts, stationary fronts, and occluded fronts are the four types of frontal systems that meteorologists study.
Cold Fronts: A cold front is a sharp transition zone separating a warm air mass from a cooler air mass. The air behind the front is usually colder and drier than the air ahead of it, and it is often cloudy and rainy or snowy.
Warm Fronts: A warm front is a narrow transition zone separating a cold air mass from a warm air mass. Warm air replaces the cold air behind the front, and it's often cloudy or rainy.
Occluded Fronts: An occluded front is a boundary between two fronts, one cold and one warm. The air behind the occluded front is generally cooler than the air in front of it.
Stationary Fronts: A stationary front occurs when a warm front or cold front halts its progress. When two air masses meet but neither has enough power to displace the other, they create a stationary front.
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a major driving mechanism of the moc is the sinking of water in the north atlantic. this begins with the formation of . as ocean water freezes, ice crystals exclude salt and the salinity of the surrounding water increases.
The major driving mechanism of the MOC (Meridional Overturning Circulation) is the sinking of water in the North Atlantic.
This begins with the formation of sea ice. As ocean water freezes, ice crystals form and the salt that is excluded from the crystals increases the salinity of the surrounding water, which causes it to become denser and sink.
Meridional Overturning Circulation (MOC) is a north-south (meridional) overturning circulation in the sea calculated by zonal accumulation (east-west) of the amount of water mass transport in depth or density layers.
This somersault circulation occurs in the North Atlantic, away from the subpolar regions, the MOC (which is in principle an observable quantity) is often identified with the thermohaline (THC) circulation, which is more of a conceptual interpretation.
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the largest earthen structure in north america, outside of mexico, is found at the site of .
The largest earthen structure in North America, outside of Mexico, is found at the site of Cahokia.
Cahokia is a UNESCO World Heritage site located in southern Illinois. It is known for its earthen mounds and was once the largest pre-Columbian settlement north of Mexico.
The city was built by the Mississippians, a Native American civilization that flourished in the Mississippi River valley from around 800 to 1500 AD.
The largest mound at Cahokia, known as Monks Mound, is a massive earthen structure that stands 100 feet tall and covers 14 acres of land.
It was likely used for ceremonial purposes and is believed to have been the focal point of the city. Other notable mounds at Cahokia include the Grand Plaza, which was likely used for public gatherings and ceremonies, and the Woodhenge, a circular arrangement of posts that may have been used for astronomical observations.
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an irrigation system waters a circular field that has a 30-foot radius. find the exact area watered by the irrigation system .
An irrigation system of circular field having 30 foot radius. It is given that field is circular, area of circular field can be calculated by area of circle.
The area of a circle with a 30-foot radius can be found using the formula πr².
π is a mathematical constant with a value of approximately 3.14 or 22/7, and r is the radius of the circle.
Therefore, the area of the circle is:
A= πr²
where, A = Area of circle/field
r = radius of circle
A = π(30²)
A = 900π.
Since π = 22÷7
900π = 900×(22÷7)
Area of field is 2828.57 square feet
The irrigation system will water an area of 2828.57square feet because it is a circular field with a 30-foot radius. Therefore, the exact area that will be watered by the irrigation system is 900π square feet.
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