Density of Earth
Quiz
Question 1
An egg sinks in water but floats in salt water.
What do you know about the density of the
egg?
a.
b.
c.
d.
It is more dense than water but less dense than salt water.
It is less dense than water and less dense than salt water
It is denser than water and denser than salt water.
It is less dense than water but more dense than salt water.
Question 2
A student shakes a jar with a mixture of sand
types. Instead of mixing, the sand grains
separate into layers. Why?
a.
b.
c.
d.
The grains are different colors.
The grains have different shapes.
The grains have different densities.
The jar has a round shape.
Question 3
Why is water located above the crust but below the
air?
a.
b.
c.
d.
The density of water is higher than air and higher than the crust
The density of water is lower than air and higher than the crust.
The density of water is higher than air and lower than the crust.
The density of water is lower than air and lower than the crust.
Question 4
Why are iron and nickel found in Earth’s core?
a. They have a higher density than most of Earth’s
substances.
b. They have a lower density than most of Earth’s
substances.
c. The core is hotter than the other layers of the earth.
d. The core is colder than the other layers of the earth.
Question 5
Where is the most dense layer of the
atmosphere located?
a.
b.
c.
d. The atmosphere does not have layers
Question 6
Why have scientists concluded that the core of the
earth is a solid?
a. Mathematics show that the temperature is so high that
it must be a solid.
b. X-rays cannot penetrate the core, so it must be a solid.
c. Seismic waves bounce off of the core, so it must be a
solid.
d. Satellite images taken of the core show that it is a solid.
Question 7
Why are relief globes such as this one inaccurate?
a. The continents are out of proportion.
b. The mountains are too tall compared to the
circumference of the earth.
c. The tectonic plates are not
shown.
d. Looks good to me!
Question 8
Scrat finds an acorn with a mass of 28 grams and a
volume of 7 cc. What will happen if the acorn rolls
down a glacier and into the lake?
a. The acorn will sink because it is hotter than the lake water.
b. The acorn will sink because it is more dense than the lake
water.
c. The acorn will float because it is less dense than the lake
water.
d. The acorn will float because it does in the movie.
Question 9
What happens to the spacing of particles of air moving
from outer space to the troposphere (close to the
earth.) ?
a. The particles move farther apart because the temperature
increases.
b. The particles move farther apart because the force of gravity
increases.
c. The particles move closer together because the force of
gravity increases.
d. It is impossible to move from outer space toward the earth
unless you are an alien.
Question 10
If earth materials are placed into a jar, shaken, and allowed to
sit, the jar looks like this. Why did the particles form layers?
a. The particles sorted
according to shape.
b. The particles sorted
according to particle size
c. The particles sorted
according to density.
d. Both b and c are correct