AnswersMO-Earth and Space Science APlanets

Planets — Unit test Answers

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1
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Which diagram correctly describes the changes that occur as a small piece of rock falls from space and hits the Earth?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
2
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What term generally describes small chunks of rocks and debris in space?

A
meteorites
B
meteoroids
C
meteors
D
meteorides
3

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

a
a protostar
a
a supergiant
a
a white dwarf
a
a red dwarf
4

What term specifically describes small chunks of rocks and debris in space that burn up in Earth’s atmosphere?

A
meteorites
B
meteoroids
C
meteors
D
meteorides
5

Why did scientists struggle for thousands of years to accurately describe the solar system?

A
Venus has phases like the moon.
B
Many people spoke Italian and did not understand Latin.
C
The planets appeared to move backward in the sky occasionally.
D
Scientists could not explain why the Sun appeared to rise and set every day.
6

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

r
red shift
t
the Eagle Nebula
t
the Doppler effect
b
background radiation
7

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?

A
0
B
1
C
5
D
10
8

Based on illustrations of magnetic field lines, where could an object be placed so it would not experience a magnetic force?

A
halfway between the like poles of two magnets, because the field lines bend away and do not enter this area
B
halfway between the opposite poles of two magnets, because the field lines are the closest together
C
above the middle of a bar magnet, because the magnetic field lines are only found around the sides of the magnet
D
above a pole of a bar magnet, because the magnetic field lines either go in or go out at the end
9

Which discovery did Galileo make to support the theory that the planets, including Earth, orbit the Sun?

A
Venus has phases.
B
The orbits of the planets are elliptical
C
Earth’s rotation causes the Sun to rise in the sky.
D
The planets move faster when they orbit closer to the Sun.
11

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

A
Jupiter, Saturn, Uranus, Neptune
B
Saturn, Jupiter, Uranus, Neptune
C
Jupiter, Saturn, Neptune, Uranus
D
Neptune, Uranus, Saturn, Jupiter
12

What is the Milky Way?

a
a spiral galaxy in which Earth is located
a
an elliptical galaxy in which Earth is located
a
an irregular galaxy in which Earth is located
t
the closest galaxy to the one in which Earth is located
13

Two bar magnets are held close together. When they are released, they move toward one another. Which best describes the original placement of the magnets?

A
The magnets are placed end to end with the north pole of each pointing toward the other.
B
The magnets are placed end to end with the south pole of each pointing toward the other.
C
The magnets are placed side by side with the like poles of each magnet near the other.
D
The magnets are placed side by side with the opposite poles of each magnet near the other.
14

Whose data did Kepler use to construct the laws of planetary motion?

A
Aristarchus’s
B
Aristotle’s
C
Brahe’s
D
Copernicus’s
15

Which term defines a star system with two stars?

A
binary star system
B
eclipse star system
C
open cluster star system
D
globular cluster star system

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