what does CER mean for science?

Answers

Answer 1

Explanation:

Claim, Evidence, Reasoning (CER) model, an explanation consists of: A claim that answers the question. Evidence from students' data. Reasoning that involves a rule or scientific principle that describes why the evidence supports the claim.


Related Questions

stages of mitosis in order

Answers

Answer:

nucleus formed

prophase

metaphase

anaphase

telophase and cytokinesis

What is the mass of an object with a density of 5.7 g/cm^3 and a volume of 48
cm^3? *

Answers

Answer:

273.6 g

Explanation:

mass =(density)(volume)

mass=(5.7g/cm^3 )(48 cm^3)

cancel out your cm^3 and your are left with grams

multiply (5.7g)(48)=273.6 g

The mass of an object with a density of 5.7 g/cm³ and a volume of 48 cm³ is 273.6 grams.

What is density?

Density is defined as the degree to which a material is packed together.

It is also defined as a mass per unit volume of the substance.

Its SI unit is kilogram per cubic meter or  gram per meter.

Density can be expressed as

Density = mass / volume

Mass =  density x volume

As given, Density = 5.7 g/cm³

                Volume = 48 cm³

So, Mass =  5.7 g/cm³ x  48 cm³

               =  273.6 grams

Thus, the mass of an object with a density of 5.7 g/cm³ and a volume of 48 cm³ is 273.6 grams.

To learn more about density, refer to the link below:

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Which types of matter are made of atoms

a. Mixtures
b. Elements
C. Compounds
D. All of the above

Answers

Answer:

D all above yes I think it's all above

Answer:  D

Explanation: All of the above.

Plz mark brainliest:)

challenges we will face terraforming Mars

Answers

Because Mars has no atmosphere, astronauts will be exposed to high levels of cosmic radiation which could cause cancer or death. The lack of atmosphere also produces severe weather - very high and low temperature as well as very high wind speeds. Astronauts will likely have to live nearby caves or underground until an atmosphere can be formed due to these elements.

Pioneer species like Lichens and Mosses inhabit an area after a major disturbance, such as a volcanic eruption. Over time, other species are found in the disturbed areas, and the number of pioneer species decreases. Why does the number of pioneer species get less?

Answers

Answer:

The number of pioneer species get less as the area has more soil to support complex plants and the competition decreases the role of pioneer species.

Explanation:

Pioneer species like Lichens and Mosses inhabit an area after a major disturbance, such as a volcanic eruption. However, with time the number of pioneer species decreases.

The number of pioneer species get less as the area has more soil to support complex plants and the competition decreases the role of pioneer species.

32 N of Force. 37 N force. How strong is the net force and in which direction?

Answers

5 units to the left.

Explanation:
They are working against each other. That means you subtract.

32 - 37 = -5

You are moving 5 units to the left because 37 is negative which means it is moving left. The key word is left. In physics, you would get the same answer if you did it this way.

37 - 32 = 5

The 5 moves in the same direction as the 37

What is the decomposition of 2LiCIO3

Answers

Decomposition is AB —> A + B

2LiClO3 —> 2LiCl + 3O2

When many earthquakes are studied, there is another common pattern that emerges: a "Shadow Zone". This is an area, for any earthquake, on the Earth where direct S-waves don't arrive at all and P waves are refracted. What do you think causes these P waves to be refracted? *

Answers

Answer:

Sudden decrease in the velocity at the boundary.

Explanation:

The shadow zone is the zone of the earth from angular distances of 104° to 140° from a known earthquake that does not directly receive any P waves. Now, this shadow zone occurs as a result of S waves getting stopped completely by the liquid core and the P waves being refracted by the liquid core.

From earlier seismic discoveries, this boundary which is the shadow zone that does not directly receive any P-waves was found to be due to the fact that the P-waves were refracted inwards as a result of the sudden decrease in velocity at the boundary.

Need help ASAP please

Answers

Answer:Melting can create steam, kind of like a nukeular plant exept no nukulear rods

1. Endothermic; increases
2. Exothermic; decreases
3. Endothermic;increases
4. Exothermic; decreases
5. Endothermic; increases

ANSWER ASAP PLEASE!!

What determines how many of each ion is required for an ionic compounds?

please do not look up on google!!!!

Answers

Each ion has a single charge, one positive and one negative, so we need only one ion of each to balance the overall charge. When writing the ionic formula, we follow two additional conventions: (1) write the formula for the cation first and the formula for the anion next, but (2) do not write the charges on the ions.

choose the letter that best describes the behavior of a substance during a phase change:

/A/ neither absorbs or releases energy

/B/ always absorbs energy

/C/ always releases energy

/D/ either absorbs or releases energy

Answers

Answer:

/D/ either absorbs or releases energy

Explanation:

During a phase change energy is either absorbed or released.

A phase change is a reversible process which occurs when a substance changes is its state from one form to another.

Phase changes are used to delineate physical changes.

A phase diagram provides a graphic representation of the change. The diagram can be 2 dimensional or 3 dimensional.

If the density of a substance is 2.18 g/mL, how would you find the density given that the mass is 0.987 kg and the volume is 4.52 x 102 mL?

Answers

Answer:

Explanation:

Convert mass in gms .. 987 gms

Density = mass/ volume

= 987/4.52 x102

= 2.18 g/mL

What is Arsenic cost per unit?

Answers

Answer:

arsenic costs $320 per 100g

Explanation:

25 cm of liquid 'A' and 20 cm of liquid
'B' are mixed at 25°C and the volume of
solution was measured to be 44.8 cm3
then correct reaction is
(A) A Hmix = 0, solution shows
ideal

Answers

Answer:

The correct option is;

(B) [tex]\Delta H_{mix} < 0[/tex], solution shows negative deviation

Explanation:

The given parameters are;

The available volume of liquid A = 25 cm³

The available volume of liquid B = 20 cm³

The volume of the solution (mixture) = 44.8 cm³

Therefore, we have;

[tex]\Delta _{mix} V < 0[/tex]

Which is one of the prerequisite for the formation of negative deviation

When a non-ideal solution shows negative deviation according to Raoult's Law, we have;

[tex]\Delta _{mix} H < 0[/tex], we have more heat released due to new molecular interactions.

Would love some help pleaseee. and please at least read the question instead of skipping it please.

Measuring tools can have errors. Errors lead to ___________________ results and _______________ conclusions. To calculate the difference of the accepted value and the experimental value, scientists use this formula:
percent error = (experimental value − ) × 100. accepted value
Minimizing Bias
People show bias when they want everyone to accept their results. Bias can arise for many reasons:
• Companies show bias when they depict only the research details that are in the best interest of their ____________.
• Scientists may be biased toward their _____________ and modify results suit their needs.
• Scientists may also show to bias get their research published in ______________ ______________.
Such biases often lead to _______________ facts. An important part of scientific thinking is identifying biases and taking the necessary steps to minimize them.
For results to be considered scientifically accurate, any scientist, regardless of his or her own bias, should be able to replicate the experiment and get the same results.
Summary
Think of some studies you’ve heard about. How can you tell whether the studies were well-designed and scientifically accurate or had biases?

Answers

Answer: this looks like your homework

Explanation:if you want help you are going to have to ask a specific question instead of giving people your homework.

Answer:

Honestly I would search this up maybe there might be a pdf with the answers. Sorry chemistry isn't my thing:(

Explanation:

Which of the following is the correct model of C7H16?
A.
B.
C.
D.

Answers

Answer:

D

Explanation:

Option D gives the correct model of C7H16. From the option, one will discover that the model has 7 carbons in the backbone. If you count the attached hydrogen, you will discover that the hydrogen is 16 in total.

This model or skeletal structure of this element represents heptane. Heptane or n-heptane is known to be a straight-chain compound and an alkane. It's chemical formula can also be written as: H₃C(CH₂)₅CH₃ or C₇H₁₆.

This compound is known to be one of the main components of gasoline. It is known to be a volatile organic compound and a clear and colorless liquids with a petroleum-like odor.

Answer: D

Explanation: Just took the test

Does the use of lithium cause human health problems?

Answers

Answer:

Yes

Explanation:

Lithium can cause nausea, diarrhea, dizziness, change in heart rhythm, muscle weakness, fatigue, and a dazed feeling

Continued use of Lithium could mean fine tremor, frequent urination, and thirst

Source: Webmd.com

Not all protists use flagella or cilia to move. Give an example of another way protists move and identify the type of protist that uses that mode of movement.​

Answers

Answer: One of the most striking features of many protist species is the presence of some type of locomotory organelle, easily visible under a light microscope. A few forms can move by gliding or floating, although the vast majority move by means of “whips” or small “hairs” known as flagella or cilia, respectively. (Those organelles give their names to informal groups—flagellates and ciliates—of protists.) A lesser number of protists employ pseudopodia. Those same organelles may be used in feeding as well.

Explanation:

what is the name of CCI3
carbon trichlorine????

Answers

Carbon tetrachloride, also known by many other names (such as tetrachloromethane, also recognised by the IUPAC, carbon tet in the cleaning industry, Halon-104 in firefighting, and Refrigerant-10 in HVACR) is an organic compound with the chemical formula CCl4.

What is force and motion

Answers

force is a strength or energy as an attribute or physical action or movement, motion is the action or process of moving or being moved

Answer:

In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity (which includes beginning moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a push or a pull.

= google

lol

How many moles are in a sample of 2.39 x 10^23 atoms of sodium (Na)

Answers

Answer:

The answer is 0.4 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\ [/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{2.39 \times {10}^{23} }{6.02 \times {10}^{23} } \\ = 0.39700996...[/tex]

We have the final answer as

0.4 moles

Hope this helps you

Volcanic belts form along
a.
islands in the Pacific Ocean.
b.
North American mountain ranges.
c.
the boundaries of Earth’s plates.
d.
the coast of Antarctica.


Please select the best answer from the choices provided

Answers

C. The boundaries of earths tectonic plates

You are conducting an experiment with two very reactive substances. One will react with oxygen (O) and other substances in the air, and the other will react to metal in a container. What type of environment can you seal them in so they only react with each other?

Answers

Answer:

seal them in a glass container in an atmosphere of argon (Ar) gas

Explanation:

How does the valence electron configuration (entire last energy level configuration) relate to the group number on the Periodic Table? Use the shorthand notation in your discussion.

Answers

Answer:

The valence electron configuration determines the group to which an element belongs to.

Explanation:

The valence electron configuration of an atom of an element refers to the number of electrons in that atoms outermost shell.

The valence electron configuration is related to the group number of an element in that the number of electrons in the valence shell of an atom of an element determines the group to which an element belongs to. For example, all elements having one valence electron belong to group IA of the periodic table. Similarly, all elements having seven valence electrons belong to group VIIA of the periodic table.

This is because, since the reactivity of an element is related to its ability to either gain or lose a certain number of electrons in its valence shell, elements having same number of valence electrons have similar chemical properties.

Which describes the elements in a given group of the periodic table?

They decrease in atomic mass as you go down the column.
They increase sequentially in atomic number from top to bottom.
They are in the same family, with similar characteristics.
Their properties change according to a pattern as you go down the column.

Answers

Answer:

They are in the same family, with similar characteristics.

Explanation:

The elements in a given group of the periodic table are in the same family and with similar characteristics.

Vertical columns on the periodic table are referred to as a group or family. Elements having the same number of electrons in the outermost shell of their atoms are placed one another in vertical columns. Each resulting vertical column is a group or family. Elements in the same group exhibit similar chemical properties because of the same number of electrons in their atoms' valence shells.

Why are biopharmaceuticals in high demand?

Answers

Answer:

the market is largely driven by the growing population, increasing burden of chronic disease, and rising inclination toward targeted therapy.

Explanation:

also, the huge demand of biopharmaceutical is facilitated by an accelerating focus in research and related investment.


How many atoms are in the following formula?
3Al2O3

Answers

Answer:

15 atoms total

Explanation:

2 Al atoms + 3 O atoms = 5 Al2O3 atoms

5 Al2O3 atoms * 3 = 15

another way to do it is:

2 Al atoms * 3 = 6 Al atoms

3 O atoms * 3 = 9 O atoms

6+9 =15 atoms total

The number of atoms in the given 3Al₂O₃ is 15 atoms.

What are atoms?

Atoms are the smallest unit of every matter. It contains charged particles present inside the atoms. They are electrons, protons, and neutrons. Atoms are of four types, description, isotopes, radioactive, and ions.

These atoms are the ions, that are charged, and the charged ions make bonds with each other to form compounds. Aluminum oxide is a compound that is formed by combining aluminum and oxygen atoms.

The compound is 3Al₂O₃

This means there are three moles of aluminum, and three moles of oxygen.

2 Al atoms + 3 O atoms = 5 Al₂O₃ atoms

5 Al₂O₃ atoms x 3 = 15

The elaborative way is:

2 Al atoms x 3 = 6 Al atoms

3 O atoms x 3 = 9 O atoms

6 + 9 =15 atoms total

Thus, the number of atoms is 15 atoms.

To learn more about atoms, refer to the link:

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Michelle learns in science class that simple machines such as an inclined plane can change the amount of force needed to lift heavy objects. She decides to test this with an experiment.



Michelle chooses a 10 kg weight. She sets up a ramp made of smooth metal that makes an angle θ with the floor. She attaches a spring scale to the weight and the top of the ramp in order to hold the weight in place. She records the force from the spring scale, then changes θ and records it again. She repeats this several times.


In this experiment, what is the dependent variable?

A.

the mass of the weight

B.

the angle θ between the ramp and the ground

C.

the amount of force on the spring scale

D.

the material the ramp is made of
Be fast please

Answers

I think it may be c I’m sorry if it’s wrong

What suprising result is explained using this model

Answers

Answer:

B. A few positive particles bounced back because they were pushed away from the positive center.

Explanation:

The result of the experiment conducted by Rutherford shows that a few positive particles bounced back because they were pushed away from the positive center.

This is the central theme of Rutherford's experiment on a thin gold foil.

In 1911, Rutherford performed the gold foil experiment that gave the modeling of the atomic structure a great boost. He bombarded a thin gold foil with alpha particles. He discovered that most of the alpha particles passed through the foil while a few of them were deflected back. This led him to postulate that an atom has a small positively charged center where nearly all the mass is concentrated.

A train in Japan can travel 813.5 miles in 5 hours

Answers

Answer:

162.7miles/hr

Explanation:

Given parameters:

Distance covered by the train  = 813.5miles

Time taken  = 5hours

Unknown:

Speed of the train  = ?

Solution:

Speed is a physical quantity.

It is mathematically expressed as;

      Speed  = [tex]\frac{distance}{time}[/tex]

So, input parameters and solve;

   Speed  = [tex]\frac{813.5}{5}[/tex]  = 162.7miles/hr

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show work .-12.4+9.2 Your model should clearly illustrate cellular division (mitosis) as well as differentiation into specialized cellscan someone tell me what to draw i really dont kno? 10 N force is acting on the body of mass 5kg which is at rest. The velocitygained by the body in 5 seconds is What is Arsenic cost per unit? Read the following excerpt from The Jungle Book byRudyard KiplingAnd he grew and grew strong as a boy must grow whodoes not know that he is learning any lessons, and whohas nothing in the world to think of except things to eat.Mother Wolf told him once or twice that Shere Khanwas not a creature to be trusted, and that some day hemust kill Shere Khan; but though a young wolf wouldhave remembered that advice every hour, Mowgliforgot it because he was only a boy-though he wouldhave called himself a wolf if he had been able to speakin any human tongue.Which detail adds tension to the rising action of thestory?Mowgli grows stronger and learns life lessonswithout knowing it.O Mother Wolf tells Mowgli that some day he will haveto kill Shere Khan.Mowgli forgets his mother's advice because he is ayoung boyMowgli would call himself a wolf if he had the abilityto speak like a human. show how the point at (4,5) on the graph of f(x) translates for f(x-2)+7 Whats the answer to this question Which theorem correctly justifies why the lines m and nare parallel when cut by transversal k?converse of the corresponding angles theoremconverse of the alternate interior angles theoremconverse of the same side interior angles theoremconverse of the alternate exterior angles theorem Suppose the following data were taken from the 2017 and 2016 financial statements of American Eagle Outfitters. (All numbers, including share data, are in thousands.) 2017 2016 Current assets $ 890,400 $999,600 Total assets 1,950,000 1,878,000 Current liabilities 424,000 357,000 Total liabilities 573,300 552,132 Net income 166,830 337,600 Net cash provided by operating activities 300,000 452,600 Capital expenditures 271,000 246,500 Dividends paid on common stock 85,000 76,500 Weighted-average shares outstanding 201,000 211,000 a. Calculate the current ratio for each year. (Round answers to 2 decimal places, e.g. 15.25.) 2017 2016 Current ratio b. Calculate earnings per share for each year. (Round answers to 2 decimal places, e.g. 15.25.) 2017 2016 Earnings per share $ c. Calculate the debt to assets ratio for each year. (Round answers to 1 decimal place, e.g. 29.5%) 2017 2016 Debt to assets ratio d. Calculate the free cash flow for each year. (Enter negative amounts using either a negative sign preceding the number e.g.-45 or parentheses e.g. (45).) 2017 2016 Free cash flow Broussard is already at full capacity, so its assets must grow at the same rate as projected sales. At the end of 2019, current liabilities were $1.4 million, consisting of $450,000 of accounts payable, $500,000 of notes payable, and $450,000 of accruals. The after-tax profit margin is forecasted to be 4%, and the forecasted payout ratio is 45%. Use the AFN equation to forecast Broussard's additional funds needed for the coming year. Enter your answer in dollars. For example, an answer of $1.2 million should be entered as $1,200,000. Do not round intermediate calculations. Round your answer to the nearest dollar. A 24ft flagpole has a shadow of 9ft. A soldier standing next to the flagpole has a shadow of 2.25 feet. How tall is the soldier? Kiara baked 30 oatmeal cookies and 48 chocolate chip cookies to package in plastic containers for her teacherfriends at schoolShe wants to divide the cookies into identical containers so that eachcontainer has the same number of each kind of cookie.If she wants each container to have the greatest number of cookies possible, how many plastic containers does sheneed? ________ is used to make purchases while ________ is the total collection of pieces of property that serve to store value. The adjusted trial balance of Windsor, Inc. shows these data pertaining to sales at the end of its fiscal year, October 31, 2022: Sales Revenue $908,100; Freight-Out $13,400; Sales Returns and Allowances $19,800; and Sales Discounts $14,500. Required:Prepare the sales section of the income statement. 2x2 + x + 5 = 0 i dont know how to do this please help connect text evidence to draw Inferences Which of the following scenarios is representative of parasitism? A.Tapeworms living in mammal's intestinal tract B.Remora fish attaching themselves to sharks C.Birds feeding on insects stirred up by grazing animals D.Birds eating scraps of food from crocodile's teeth Please answer quickly!Find the equation of the line. Y=__x + __ Chips are $1.49 a bag. They are 27% off. What is the new price?A. $1.09B. $3.20C. $87.25 I need help plz!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!