Gravity and Motion — Unit test

Question 1

What term describes the moon’s path around Earth?

Revolt · Accepted Answer

revolution

Question 2

Lori attended a lecture about the Sun, and the presenter had placed this image on the wall. Which layer of the Sun could this image be referring to?

Revolt · Accepted Answer

the convection zone, because it shows how energy moves in a convection current

Question 3

What is the correct order of star colors from hottest to coolest?

Revolt · Accepted Answer

blue, white, yellow-white, orange

Question 4

Which list correctly orders the outer planets from least to greatest distance from the Sun?

Revolt · Accepted Answer

Jupiter, Saturn, Uranus, Neptune

Question 5

Which is a factor that keeps Earth in orbit around the Sun?

Revolt · Accepted Answer

the gravitational pull of the Sun

Question 6

Scientists believe that some mass extinction events are possibly caused by asteroids, volcanic activity, or climate change. How many mass extinctions have occurred on Earth in the last 4.6 billion years?

Revolt · Accepted Answer

5

Question 7

Which causes objects in the universe to resist a change in speed or direction?

Revolt · Accepted Answer

inertia

Question 8

Which type of star will become a black hole when it dies?

Revolt · Accepted Answer

a supergiant

Question 9

What was discovered in 1965 and is believed to be leftover thermal energy from the big bang?

Revolt · Accepted Answer

background radiation

Question 10

Why are there two high tides a day about 12 hours apart from each other?

Revolt · Accepted Answer

Earth rotates entirely on its axis once during that time.

Gravity and Motion — Unit test Answers

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