Which question would be scientifically reasonable for a student to ask about the layers of the Earth? A. Why does the temperature decrease as you move from the crust to the core?
B. Why does density increase as you move from the crust to the core?
C. Why does density decrease as you move from the crust to the core?
D. Why is the inner core liquid iron and the outer core solid iron?

Answers

Answer 1

Answer:

Answer:

The answer is C

Explanation:

Related Questions

What are the three properties of bases?
The first shell can hold a maximum of two electrons. How does this explain the valence of hydrogen?
A student tested a sample of carbon (C) by combining it with water. There was no reaction between the carbon and water. The student concluded that carbon must be a group 18 element, since it was unreactive. State whether you agree with the student's reasoning, and explain why or why not?
Write your question here (Keep it simple and clear to get the best answer)how can the boiling point of a liquid raised without adding soluble impurities?
A 2.00 g sample of ammonia is mixed with 4.00 g of oxygen. Which is thelimiting reactant and how much excess reactant remains after the reactionhas stopped?

Select all that apply.1: Which of the following particles are of approximately equal mass?

A: protons
B:electrons
C:neutrons
D:quarks
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2: If the atomic number of an element is 16, then it has 16 electrons.

True
False
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3: An unknown substance is tested and found to have the following physical properties:

brittle
fair conductor of electricity
dull (not shiny)

The substance is most likely a _____.

A:metal
B:metalloid
C:nonmetal
D:can not be determined without more data
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Answers

1)Protons and Neutrons have approximately equal masses

2)TRUE

3) B-Metalloid

Answer:

its a and b

Explanation:

i got it right on test

How many meters is a 50 yards olympic size swimming pool?

Answers

Answer:

An official Olympic Sized pool is 50 meters long by 25 meters wide.

Explanation:

Is rubber band stretching physical or chemical

Answers

Answer:

$\boxed {\boxed {\sf Physical \ change}}$

Explanation:

A chemical change, as the name suggests, must result from a change in the chemical makeup and new substances are produced. A very common example is metal rusting.

A physical change can be observed without a change in chemical composition. No new substances are produces. Ripping paper and an ice cube melting are physical changes.

A rubber band stretching is a physical change. No new substances are made and the chemical makeup remains the same.

Answer:

physical

Explanation:

this is a physical action to create a change. does not involve chemicals or elements

What is the concentration of O2(g), in parts per million, in a solution that contains 0.008 gram of O2(g) dissolved in 1000. grams of H2O(l)?

Answers

concentration of O₂ dissolved in H₂O can be written as ppm

ppm stands for parts per million - mg/kg

the amount of mg in 1 kg of solution

the mass of O₂ - 0.008 g

1000 mg equivalent to 1 g

therefore mass of O₂ in mg - 0.008 g x 1000 mg/g = 8 mg

the mass of water is 1000 g

1000 g is equivalent to 1 kg

mass of water in kg - 1000 g / 1000 g/kg = 1 kg

there's 8 mg of O₂ in 1 kg of water

therefore concentration of O₂ is - 8 mg/kg

also can be written as 8 ppm

answer is 8 ppm

Answer : The concentration of $O2(g)$ in parts per million is, 8 ppm

Solution : Given,

Mass of oxygen gas (solute) = 0.008 g

Mass of water (solvent) = 1000 g

First we have to calculate the mass of solution.

Mass of solution = Mass of solute + Mass of solvent = 0.008 + 1000 = 1000.008 g

Now we have to calculate the concentration of $O2(g)$ in parts per million.

ppm : It is defined as the mass of solute present in one million $(10^6)$ parts by mass of the solution.

$ppm=\frac{\text{Mass of solute}}{\text{Mass of solution}}* 10^6$

Now put all the given values in this expression, we get

$ppm=(0.008g)/(1000.008g)* 10^6=7.99=8ppm$

Therefore, the concentration of $O2(g)$ in parts per million is, 8 ppm

Name at least three types of energy associated with a microwave

Answers

I'm pretty sure what you are trying to ask for is radiative energy, light energy, and electronic energy.
Radiative since the microwave is releasing radiation,
Light since there is light inside the microwave,
Electronic since it is plugged in and uses electricity.
You can also use sound, but I don't think every microwave makes sound.

If salt is dissolved in water, water serves as the:a. solute.
b. solvent.
c. dissolved medium.
d. none of the above

Answers

b. solvent

solute is the substance being dissolved

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A plate moves south at a rate of 2 cm/year. How many meters south from its original location will the plate be in 4,000 years? 8,000 meters south 4,000 meters south 200 meters south 80 meters south

A material will float on the surface of a liquid if the material has a density less than that of the liquid. Given that the density of water is approximately 1.0 g/mL, will a block of material having a volume of 1.2 x 10^4 in^3 and weighing 350 lb float or sink when placed in a reservoir of water? [I just don't want the answer, I'd like to know how to solve this, please.]

What element forms a compound with chlorine with the general formula MCl?

Which of the following is a synthesis reaction?C2H4 + 3O2 yields 2CO2 + 2 H2O 2HCl yields H2 + Cl2 2K + 2HCl yields 2KCl + H2 SO3 + H2O yields H2SO4