AnswersAZ-Earth and Space Science AOther Objects in the Solar System

Other Objects in the Solar System — Unit test Answers

16 verified answers4 views
1
Free Preview

Which statement correctly describes terrestrial planets?

A
They are made of mostly rock.
B
They are made of gases.
C
They are small objects of ice and dust.
D
They are very large compared to other planets.
2
Free Preview

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
3

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.
4

Which planet in the solar system is least dense?

A
Jupiter
B
Mercury
C
Neptune
D
Saturn
5

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

A
Aristarchus’s
B
Aristotle’s
C
Brahe’s
D
Copernicus’s
6

Which is a type of star system?

A
dim stars
B
solar system planets
C
wobbling stars
D
globular clusters
7

Observable matter makes up about what percentage of the universe?

5
5%
1
10%
5
50%
9
95%
8

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

A
a protostar
B
a supergiant
C
a white dwarf
D
a red dwarf
9

What force acts between Earth and the moon?

A
gravity
B
mass
C
motion
D
newtons
10

Which is one physical property that all stars have?

A
They are made of gases.
B
They shine very brightly.
C
They have a triangle shape.
D
They contain iron in their cores.
11

Which planet is small, with a rocky surface and an atmosphere?

A
Jupiter
B
Neptune
C
Uranus
D
Venus
12

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.
13

In which direction does Earth rotate?

A
eastward around its axis
B
in an ellipse around the Sun
C
counterclockwise around the Sun
D
from north to south around its axis
14

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
15

Which remains the same as the distance of an object from Earth changes?

A
size of the force
B
strength of gravity
C
mass of the object
D
weight of the object
16

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

A
red shift
B
the Eagle Nebula
C
the Doppler effect
D
background radiation
17

Which is the final event that occurs when a star is forming?

A
The outer layer of the star expands.
B
Gravity pulls gas and dust together.
C
A black hole forms as the core collapses.
D
Nuclear fusion begins under high pressure.
18

Which is a type of star system?

A
dim stars
B
solar system planets
C
wobbling stars
D
globular clusters
19

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

A
Aristarchus’s
B
Aristotle’s
C
Brahe’s
D
Copernicus’s
20

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

A
gravity
B
inertia
C
motion
D
orbit

Did you find these answers helpful?

More from this Course

Quiz
35 verified answers

Unit Test

Quiz
15 verified answers

Unit Test

Quiz
15 verified answers

Other Objects in the Solar System