Answer:
For 40 years, the Israelites wandered in the wilderness, eating quail and manna. They were led into the Promised Land by Joshua; the victory at Jericho marked the beginning of possession of the land. As victories were won, the tracts of land were assigned to each tribe, and they lived peacefully with each other.
Describe four different types of drugs and their impact on sports performance
Evaluate the impact of four different performance-enhancing drugs on performance in four different types of sport
9
Discuss, using relevant examples, why some individuals may resort to using performance-enhancing drugs in sport
Types of drugs and their impact on sports performance:
Anabolic Steroids: Anabolic steroids are synthetic hormones that mimic the effects of testosterone, which is responsible for muscle growth and repair. The use of anabolic steroids increases muscle mass, strength, and endurance. They are commonly used in sports such as weightlifting, bodybuilding, and sprinting.
Stimulants: Stimulants such as caffeine, amphetamines, and cocaine can enhance performance by increasing alertness, reducing fatigue, and improving reaction time. They are commonly used in sports such as cycling, endurance running, and sprinting.
Human Growth Hormone (HGH): HGH is a hormone that stimulates cell growth and regeneration. It is used to increase muscle mass, strength, and endurance. HGH is commonly used in sports such as weightlifting, bodybuilding, and sprinting.
Erythropoietin (EPO): EPO is a hormone that stimulates the production of red blood cells, which carry oxygen to the muscles. It is used to increase endurance by improving oxygen delivery to the muscles. EPO is commonly used in sports such as cycling, distance running, and cross-country skiing.
Impact of performance-enhancing drugs on performance in different sports:
Anabolic Steroids: Anabolic steroids can have a significant impact on performance in weightlifting and bodybuilding by increasing muscle mass and strength. They can also improve sprinting performance by increasing power and speed.
Stimulants: Stimulants can improve performance in endurance sports such as cycling and long-distance running by reducing fatigue and improving reaction time. They can also improve sprinting performance by increasing alertness and reaction time.
Human Growth Hormone (HGH): HGH can have a significant impact on performance in weightlifting and bodybuilding by increasing muscle mass and strength. It can also improve sprinting performance by increasing power and speed.
Erythropoietin (EPO): EPO can improve performance in endurance sports such as cycling and distance running by increasing the number of red blood cells, which improves oxygen delivery to the muscles. It can also improve performance in cross-country skiing by increasing endurance.
Reasons for using performance-enhancing drugs in sport:
Competitive pressure: Athletes may feel pressure to win at all costs, and may resort to using performance-enhancing drugs to gain a competitive edge.
Financial gain: Some athletes may see the use of performance-enhancing drugs as a way to earn more money by winning competitions and endorsements.
Desire for fame and recognition: Athletes may use performance-enhancing drugs to achieve fame and recognition in their sport.
Self-esteem issues: Some athletes may use performance-enhancing drugs to improve their self-esteem and body image.
Injury recovery: Athletes may use performance-enhancing drugs to speed up their recovery from injuries and get back to competition faster.
Lack of knowledge or education: Some athletes may not fully understand the risks associated with using performance-enhancing drugs, or may not be aware that they are using them.
What size is the crystal in an extrusive igneous rock?
3. Although all intrusive igneous rocks form in the same location, there are still different methods
of formation.
A. What are three methods of intrusive igneous rock formation? (3 points)
B. What happens during each method to form intrusive igneous rocks? (3 points)
Answer:
A. Three methods of intrusive igneous rock formation are:
Solidification of Magma
Fractional Crystallization
Assimilation
B. The following happens during each method to form intrusive igneous rocks:
Solidification of Magma: In this method, magma cools and solidifies underground. As the magma cools, crystals form, and the minerals in the magma become more concentrated. Over time, the magma solidifies into a pluton or a body of intrusive igneous rock.
Fractional Crystallization: In this method, minerals in the magma crystallize at different temperatures. As the magma cools, minerals that crystallize at higher temperatures settle out first, leaving a residual magma that is enriched in minerals that crystallize at lower temperatures. This process continues until all the minerals have crystallized, forming a body of intrusive igneous rock.
Assimilation: In this method, magma from a magma chamber intrudes into and melts surrounding rocks. As the magma moves through the rocks, it assimilates some of the rock material, which then becomes part of the magma. The assimilated material can cause changes in the composition of the magma, which can lead to the formation of a different type of intrusive igneous rock.
Explanation:
Which lymph node is not clustered in a group?
a. preaortic
b. inguinal
c. inguinal
d. submental
The provided table shows the properties of four different sample materials. One of these materials is cork, a type of wood that floats on water (density of water = 1.00 g/cm3What is the density of cork in g/cm3Record and bubble in your answer on the answer document.
The density of cork can vary depending on factors such as its moisture content and the specific type of cork, but a typical range for the density of cork is around 0.24 to 0.32 g/cm3.
What is Density?
Density is a physical property of matter that describes how much mass is contained in a given volume of a substance.
Density = Mass / Volume
The standard unit of density is kilograms per cubic meter (kg/m3) in the International System of Units (SI), but it can also be expressed in grams per cubic centimeter (g/cm3) or other units.
However, based on the information you have provided, cork is a type of wood that floats on water, which means its density is less than that of water. The density of water is 1.00 g/cm3, so the density of cork must be less than 1.00 g/cm3 in order for it to float. In general, the density of cork can vary depending on factors such as its moisture content and the specific type of cork, but a typical range for the density of cork is around 0.24 to 0.32 g/cm3.
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Which of the following is true about photosynthesis?
A.
Chloroplasts release energy from the chemical bonds in sugar.
B. Chloroplasts convert light energy into chemical energy in the form of sugar.
C. Mitochondria convert light energy into chemical energy in the form of sugar.
D. Mitochondria release energy from the chemical bonds in sugar.
Answer:
B
Explanation:
Mitochondria both deal with cellular respiration, not photosynthesis, meaning that C and D are wrong. and if you look at the photosynthesis equation, it equals glucose = sugar
as a result of natural selection species with mostly survive
As a result of natural selection, species that are better adapted to their environment are more likely to survive and reproduce, passing on their advantageous traits to their offspring.
What is natural selection?Natural selection favors traits that improve an organism's ability to survive and reproduce in a particular environment, while eliminating those that are detrimental.
For example, consider a population of birds living in a forest with brown and green leaves. If a mutation arises that gives some birds better camouflage against brown leaves, these birds will be more likely to survive and reproduce, passing on this advantageous trait to their offspring.
Over time, the proportion of birds with the advantageous trait will increase in the population, while those without it will decrease. Eventually, the population may become dominated by birds with the advantageous trait, resulting in a new subspecies that is better adapted to living in a forest with brown leaves.
In summary, natural selection favors traits that improve an organism's ability to survive and reproduce in a particular environment, and species that are better adapted to their environment are more likely to survive and pass on their advantageous traits to their offspring.
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V
4. Population levels fluctuate over time and with changing conditions.
A. What is the definition of carrying capacity? (10 points)
B. What happens when a population exceeds its carrying capacity? (10 points)
Answer:
A. Carrying capacity refers to the maximum number of individuals of a species that can be supported by a particular environment without degrading the environment's ability to sustain future generations of that species. It is determined by a range of biotic and abiotic factors, such as food availability, water, shelter, predation, disease, and other limiting resources.
B. When a population exceeds its carrying capacity, the environment becomes unable to provide the necessary resources to support the excess individuals, and the population size decreases. This can occur through various mechanisms, such as competition for resources, predation, disease, or migration. As resources become scarce, the population may experience a decline in birth rate, an increase in death rate, or both. This can result in a population crash or die-off, which can have cascading effects on other species and the entire ecosystem. Therefore, it is important for species to stay within their carrying capacity to maintain a sustainable balance with their environment.
Explanation:
How did paleoanthropologists determine that Paranthropus ate tough plant foods like grasses
and leaves?
A) Food remains near the fossil
B) Drawings of food on cave walls
C)Food cutting tools found at their sites
D) Evidence of powerful chewing muscles
Answer:
D) Evidence of powerful chewing muscles.
Which best explains how photosynthesis is helpful to humans?
Group of answer choices
It produces proteins, which humans can eat.
It provides oxygen for humans to breathe.
It increases the levels of carbon dioxide in the air.
It reduces the amount of harmful rays released by the sun.
what is the difference between blood type A+ and A- as well as blood type B+ and B-?
Answer:
Explanation:
Type A: Red blood cells possess two different glycoprotein antigen on their surface. They are named as A antigen and B antigen. The rbc which possess A antigen on their surface are know as A group. The RH systems says that rbc has one more antigen beside A and B antigen and named that new antigen as Rh antigen. The person who has Rh antigen are termed as Rh positive. The person who doesnt consist Rh antigen are termed as Rh negative. So A positive means the human Rbc consist A and Rh antigen on their surface. A negative means human Rbc consist only A antigen on their surface.
Type B(+) particularities:
The red blood cells of B+ people are coated withantigens called “type B” on their surface. Therefore, these people can only donate blood to people in groups B and AB, who do not have anti-B antibodies.
B+ red blood cells can only be transfused to rhesus positive people: AB positive (AB+) and B positive (B+).
Type B blood also contains anti-A antibodies, so B+ can receive red blood cells of blood groups O and B, all rhesus combined.
Type (B-) particularities:
Like B+ people, B- people have type B antigens on the surface of their red blood cells. Their blood can therefore only be transfused to people in groups B and AB, who do not have anti-A antibodies.
On the other hand, B- people can give both rhesus groups B and AB (B+, B-, AB+, AB-).
Finally, they can receive red blood cells of the O negative (O-) and B negative (B-) blood groups.
I really hope this gives some clearance
5. Earthquakes are often found along transform boundaries.
A. How do the plates move along these boundaries? (5 points)
B. What is a famous example of one of these boundaries in the United States? (3 points)
Answer: The movement of the plates creates three types of tectonic boundaries: convergent, where plates move into one another; divergent, where plates move apart; and transform, where plates move sideways in relation to each other. They move at a rate of one to two inches (three to five centimeters) per year.
Explanation: I wrote it
Answer:
WHEN TECTONIC PLATES GET MOVED THEN THAT MOVEMENT CAUSE EARHQUAKE
IN NEPAL EARTHQUAKE CAME MANT TIMES AND ALWAYS THE REASON WAS SAME U KNOW WHAT THE MOVEMENT OF TECTONIC PLATES
which statement best describes the composition of diatom shells?
They are smaller boxes with lids, composed of silica
They have two sets of grooves that contain flagella
They are box like structures, composed of cellulose
The shell is a flexible pellicle that can change shape
The covering is a calcium shell called a test
They are like small boxed with lids composed of silica statement best describes the composition of diatom shells.
Option A is correct.
How do diatom shells work?Diatoms are a kind of freshwater green growth with siliceous shells (made of silica). They live in "glass houses" literally. A diatom's shell is made up of two sections that are different sizes and can be wedge- or round-shaped.
What purpose do diatom shells serve?The natural material of diatom shells, which are made of silicon dioxide and can theoretically be made in any quantity, has regular patterns of pores that penetrate their surface. Diatom shells have the potential to be utilized as low-cost, highly effective drug carriers, sensor devices, or other microdevices due to their characteristics.
Question incomplete:
which statement best describes the composition of diatom shells?
A. They are smaller boxes with lids, composed of silica
B. They have two sets of grooves that contain flagella
C. They are box like structures, composed of cellulose
D. The shell is a flexible pellicle that can change shape
E.The covering is a calcium shell called a test
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Why are trees considered natural resources? a. They provide valuable shade that no other resource can provide. b. Humans use them to produce paper, lumber, fuel, and other products. c. They are an important source of firewood for campfires. d. They grow back after they're cut down.
Answer:
Explanation:
The correct answer is b. Trees are considered natural resources because humans use them to produce paper, lumber, fuel, and other products. Trees provide a renewable resource that can be harvested and used for a variety of purposes. They also play an important role in the environment by producing oxygen, providing habitats for wildlife, and helping to regulate the climate. While trees can provide valuable shade and be a source of firewood for campfires, these factors alone do not fully explain why they are considered natural resources.
For the animal pictured in the boxes below, type at least 3 adaptions they have and explain how these adaptions help them survive in their environments
Answer:
Edmentum sucks
Explanation:
The organisms in a desert biome must have wide feet as as to wade through sand, this is not necessary in a tundra biome.
The term biome refer to a zone of life found on earth. The descriptions of tundra and desert biomes are shown as follows;
A tundra biome is a cold region in which trees are absent and living organisms have to survive under very cold conditions.
A desert biome is covered mostly with sand and has alternating hot and cold conditions in the day and in the night.
The organisms in a desert biome must have wide feet as as to wade through sand. This is not necessary in a tundra biome composed mostly of snow. Also, in a desert biome, organisms have hairy eyes to keep away sand. This is not required in a tundra biome.
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show a chart for the cross for one heterozygous guinea pig and a homozygous dominant guinea pig
In complete dominance, the dominant allele hides the expression of the recessive one when they are together in the same genotype. 1) a- 100% will have short hair. b) 0% long hair. 2) Both parents are heterozygous, Ss.
What is complete dominance?
Complete dominance is an inheritance pattern that occurs when the dominant allele completely masks the recessive allele.
The presence of at least one dominant allele in genotypes is enough to express the dominant pahenotype.
Homozygous dominant and heterozygous individuals express the dominant phenotype coded by the dominant alleleHomozygous recessive individuals express the recessive phenotype, coded by the recessive allele.In the exposed example,
Short hair is coded by the dominant allele SLong hair is coded by the recessive allele s1)
Cross 1: one heterozygous with a homozygous dominant
Parentals) Ss x SS
Gametes) S s S S
Punnett square) S s
S SS Ss
S SS Ss
F1) Genotype
50% of the offspring is expected to be homozygous dominant, SS50% of the offspring is expected to be heterozygous, SsPhenotype
100% of the offspring is expected to have short hair1) a- 100% of the progeny will have short hair
1) b- 0% of the progeny will have long hair
2)
Cross 2: between two short-haired individuals
F1) 25% long-haired individuals
If among the progeny both phenotypes are expressed, it means both parents carry the recessive allele in their genotypes, otherwise only the dominant phenotype would appear.
Parents) Ss x Ss
Gametes) S s S s
Punnett square) S s
S SS Ss
s Ss ss
F1) 75% of the progeny is expected to hace short hair (25% SS + 50% Ss)
25% of the progeny is expected to have long hair (25% ss)
2)a- Parents genotype:
mother Ss father SsYou will find the complete question in the attached files.
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QUICK/URGENT! (image)
Answer:
Continents: Fossil locations and Rock ages.
Both: Rock type, Climate, and Magnetic stripes.
Ocean Basin: Surface features.
Hope it helped! :)
A set of physiological responses regulated by the peripheral nervous system and inductive of rest is called the
response.
Answer:
A set of physiological responses regulated by the peripheral nervous system and inductive of rest is called the relaxation response.
Explanation:
C) State any two (2) shortfalls of Cell Theory.
The two shortfalls of Cell Theory are:
Ignores the complexity of cellsWhile the Cell Theory states that all living organisms are composed of cells, there are a few exceptions.What is the drawbacks of Cell Theory?The Cell Theory assumes that all cells are similar in structure and function, but in reality, there is a great deal of diversity in the size, shape, as well as the function of cells.
Moreover, the complexity of cells and their components is not fully captured by the Cell Theory, as it does not take into account the intricate subcellular structures and processes that exist within the particular cells.
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How can data collection help us learn about local biodiversity?
Data collection can help us learn about local biodiversity by providing us with information about the species in a particular area, and the current population numbers.
What is local biodiversity?The diversity of living forms found within a particular ecosystem or geographic region is known as local biodiversity. It contains all the plants, animals, fungi, and microorganisms that reside in a certain region. Humans rely on a range of resources and services, such food, water, and pollination, which is why biodiversity is significant.
In order to keep ecosystems healthy and provide habitat for a range of species as well as protection against environmental changes, local biodiversity is also important.
In summary, information can be used to identify areas of biodiversity hot spots, prioritize conservation efforts, and develop strategies to protect species. Data collection can also help us understand the impacts of human activities on biodiversity and determine how to balance development and conservation.
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Quadrat Quality
1. Draw Conclusions A classmate says that this is his one and only quadrat sample for a study of the grasshopper population in a 20-acre meadow. List the flaws in his sampling methods.
The flaws in your classmate's sampling method include:
Small Sample SizeUnrepresentative Sampling LocationLimited Sampling FrequencyLack of StandardizationLack of ReplicationBias toward visible grasshoppersWhat is quadrat sampling?Quadrat sampling is a technique for immediately counting the number of organisms in a portion (or sample) of the habitat. It is used to calculate population density, frequency, and dispersion estimates.
Quadrat positions may be selected at random or along a transect.
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Somebody pls help I need to pass this
Answer: Mitosis
Explanation:
1. Sporophyte produces haploid spores by meiosis
2. Spores germinate and divide by mitosis and develop into multicellular, haploid gametophytes
3. Gametophytes produce unicellular haploid gametes by mitosis
4. Two gametes unite during fertilization to form a diploid zygote
5. Zygote divides by mitosis and develops into a multicellular, diploid sporophyte.
Which rate of evolution BEST describes a fossil record that shows many different forms of the same organism over a long period of time?
gradualism
adaptive radiation
convergent evolution
punctuated equilibrium
The rate of evolution that best describes a fossil record that shows many different forms of the same organism over a long period of time is gradualism.
What is Gradualism?Gradualism is described as a theory that suggests that evolution occurs at a slow and steady pace over long periods of time, and that small changes accumulate over time to produce larger changes.
In this scenario, the many different forms of the same organism that are observed in the fossil record would be the result of gradual changes that occurred over a long period of time.
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Which kind of research is most likely to improve the health of the
environment?
A lot of kinds of research.
Renewable energy research. Research in habitat conservation. Research into less harmful pesticides. Recycling research. Anything research that results in positive change for the environment.
What is the difference between analyzing and modifying one's DNA?
Answer:genetic information that a person has, so as to predict or better understand the traits or diseases that she or he may develop.
Explanation:
There is no way to minimize the problem of the wolves attacking herds.
True
False
Answer:
False
Explanation:
I think that this is false because there are actually many things that people can do to prevent some consequences of wolves attacking herds, an example could be that people could put a tracking device on the wolves kind of like you might to a dog like a chip. There is a way to minimize the impact of wolves attacking herds because all someone has to do is watch the sheep and then set up some detectors on the land, and when the wolf tries to attack the sheep or herds, they won’t be able to because of the shock they will get, when trying to get past the electric fence.
Question 8 (2 points)
What describes the unusually large release of plasma from the sun's corona? (2 points)
O a
Ob
Oc
Od
Aurora
CME
Solar flare
Solar wind
Question 9 (2 points)
The unusually large release of plasma from the sun's corona is described as a CME (coronal mass ejection).
What is CME (coronal mass ejection)?
A coronal mass ejection (CME) is a massive burst of solar wind and magnetic fields that are ejected from the sun's corona into space. These eruptions can release billions of tons of charged particles and plasma at speeds of several million miles per hour. When a CME collides with the Earth's magnetic field, it can cause geomagnetic storms, auroras, and other disruptions to our planet's space environment. CMEs can also have significant impacts on satellite and communication systems, as well as on power grids on the ground.
What is plasma?
plasma refers to the highly ionized gas consisting of a mixture of positively charged ions, negatively charged electrons, and neutral particles that are released from the sun's corona during a coronal mass ejection (CME).
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In humans, Albinism (being an Albino) is a recessive trait. What are ALL of the possible genotypes and
phenotypes of the parents for an offspring to be born albino? (Hint: You may need to draw out different
possible scenarios using Punnett Squares).
Answer:
To have an albino offspring, both parents must be carriers of the recessive gene for albinism. Therefore, the possible genotypes for the parents are:
AA (not a carrier) x aa (carrier)
aa (carrier) x AA (not a carrier)
Aa (carrier) x Aa (carrier)
Using Punnett squares to determine the possible offspring:
AA x aa: all offspring will be Aa carriers (phenotype: not albino)
aa x AA: all offspring will be Aa carriers (phenotype: not albino)
Aa x Aa: 25% of offspring will be aa (phenotype: albino), 50% will be Aa carriers (phenotype: not albino but carrying the gene), and 25% will be AA (phenotype: not albino)
Therefore, the only scenario where an offspring can be born albino is if both parents are carriers (Aa) and they have a child with the genotype aa.
C + O2 = CO2. The __ carbon combines with the ___ oxygen to form the ___ carbon dioxide.
1,1,1
Explanation:
1 mole of carbon combines with 1 ,mole of oxygen to form 1 mole of carbondioxide
How does geographic isolation affect a population's gene pool?
Responses
It increases the rate of mutation in the gene pool.
It increases the rate of mutation in the gene pool.
It increases the rate of gene flow between populations.
It increases the rate of gene flow between populations.
It causes natural selection to remove harmful genes.
It causes natural selection to remove harmful genes.
It prevents gene flow between other populations.
Answer:
It prevents gene flow between other populations.
Explanation:
Geographic isolation can prevent gene flow between other populations by creating physical barriers that prevent individuals from one population from interbreeding with individuals from another population. This can lead to the accumulation of genetic differences between the isolated populations over time, as mutations and other genetic changes may occur independently in each population without being exchanged with other populations. As a result, the gene pool of each isolated population may become increasingly distinct and divergent from the gene pools of other populations. This process can eventually lead to the formation of new species.
2. Scientists use seismic waves to study inner Earth.
A. How are seismic waves formed? (2 points)
B. What are two characteristics of P waves? (2 points)
C. What are two characteristics of S waves? (2 points)
D. How do absorption, reflection, and refraction change the movement of P waves? (6 points)
Answer:
A. Seismic waves are formed by the sudden release of energy, such as from an earthquake, explosion, or human-made source.
B. Two characteristics of P waves, also known as primary waves, are that they are longitudinal waves that travel through solids, liquids, and gases, and they are the fastest seismic waves.
C. Two characteristics of S waves, also known as secondary waves, are that they are transverse waves that can only travel through solids, and they are slower than P waves.
D. Absorption, reflection, and refraction can change the movement of P waves in several ways:
Absorption: P waves can lose energy and become weaker as they travel through different materials, such as soil, rock, or water.
Reflection: P waves can bounce off a boundary between two different materials, such as the boundary between the Earth's crust and mantle, causing them to change direction.
Refraction: P waves can change direction as they pass through materials with different densities or elastic properties, such as the boundary between the Earth's mantle and core. The change in direction can cause P waves to bend, speed up, or slow down.
Explanation:
Hello there,
Introduction:
Seismic waves are a unique feature that Scientists get from Earthquakes.
Seismic waves are vibrations that essentially travel through Earth carrying the energy released during an earthquake. The three types of seismic waves are P waves, S waves and surface waves.
P waves, or primary waves, are a type of seismic wave that compresses and expands the ground. This type of wave moves the fastest and can go through both solids and liquids.
S waves, or secondary waves, are a type of seismic wave that moves the ground up an down or side to side. S-waves can NOT go through liquid and are slower than P waves.
Surface waves are when P waves and S waves reach the Earth's surface. Surface waves are by far the most dangerous.
Questions:
A How are seismic waves formed? (or produced)
Seismic waves are initially generated by the juddering of rock surfaces as they grind past each other when forces overcome friction. The fault interface is not smooth like many imagine. Its faces are dotted with protrusions of a range of sizes which before the quake mesh and grind together. These features are called asperities and can be as small as rock crystals on the size of a hillside.
The shearing and tearing of the asperities under unimaginable forces created a broad spectrum of frequencies within the event as a whole. If you rub two rocks together, you'll feel vibrations as the surface push past each other, and hear the vibrations as they're transferred to your ear through the air.
However this is just the beginning. The fault, or weakness in the rocks, may be many km long and if a lot of force is present over a wide area the fault failure will spread along it in a gigantic lurch. The crack, if you will, grows from initial failure outwards at a speed of many kilometers per second with each segment of the failing fault generating its own source of vibration. The changes in stress the quake creates may also be sufficient to make adjoining rock interfaces or fault break. The end result is a three dimensional network of vibrational sources which evolves over the seconds or minutes the complete event takes. And this sends a community of seismic waves radiating outwards.
Also, these waves are attenuated as they travel, some travelling deep others to the surface. But the net result is that when we experience a quake it's vibrations created by the grinding and tearing of rock.
B What are two characteristics of P waves?
Fastest waveA longitudinal (compression) waveC What are two characteristics of S waves?
A transverse waveCannot travel through a liquidD How do absorption, reflection, and refraction change the movement of P waves?
Each have a separate effect on P waves.
- Absorption reduces the energy of P waves.
- Reflection will reflect or bounce P waves back and fourth.
- Refraction will change refract or change direction of the P-waves (based on what surface they are spiraling off of or bouncing off of).
Thank you,
Eddie