AnswersDRHS GA-GSE Earth SystemsUnit Test

Unit Test — Unit test Answers

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How did Galileo increase public support for Copernicus’s model?

A
by publishing his work in Italian
B
by using data collected by Tycho Brahe
C
by explaining why planets appear to move backward
D
by arguing that Earth’s rotation makes objects appear to move in the sky
2
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Which planet is terrestrial?

A
Jupiter
B
Mars
C
Saturn
D
Uranus
3

How is the moon illuminated?

A
It produces its own light.
B
It reflects light from the Sun.
C
It transforms energy into light.
D
It absorbs light from the Earth.
4

Which planet revolves slowly around the Sun, has rings, and is known for its Great Red Spot?

A
Jupiter
B
Mars
C
Neptune
D
Saturn
5

What can be observed only by observing its effects on gravity?

A
dark matter
B
a solar nebula
C
gas and dust
D
a planetesimal
6

About how long does it take Earth to complete one revolution around the Sun?

A
1 year
B
14 days
C
24 hours
D
27.3 days
7

Which object(s) formed last in our solar system?

A
the Sun
B
the solar nebula
C
the inner planets
D
the planetesimals
8

What will a medium-mass star become at the very end of its life cycle?

A
a red giant
B
a black hole
C
a black dwarf
D
a neutron star
9

At which location would an object’s weight be the greatest?

A
on Pluto
B
on Earth
C
on the Sun
D
on the moon
10

Which correctly lists three planets that have rings?

A
Jupiter, Mars, Saturn
B
Mars, Jupiter, Mercury
C
Mercury, Mars, Venus
D
Neptune, Uranus, Jupiter
11

Look at the diagram of the moon and three different paths that it could take.

Question illustration
A
the path of the moon toward the Sun
B
the path of the moon’s orbit around Earth
C
the path the moon would take if it had a larger mass than the Sun
D
the path the moon would take if there was no force of Earth’s gravity
12

What are the two main types of star clusters?

A
binary and wobbling
B
eclipsing and binary
C
globular and eclipsing
D
open and globular
13

What is a nebula?

A
the core of a massive star
B
a cloud of gas and dust in space
C
a swirling disk with a lot of gravity
D
the debris remaining after a supernova
14

Which statement accurately describes a light-year?

A
It is the shape of a galaxy.
B
It is the distance that light travels in a year.
C
It is a yearly measurement of light given off by stars.
D
It is the amount of time it takes light to travel one million kilometers.
15

Which type of galaxy has arms that contain sites of active star formation and start close to a bulge in the center?

A
elliptical
B
irregular
C
barred spiral
D
normal spiral
16

What is released through nuclear fusion in stars?

A
energy
B
gas
C
mass
D
pressure
17

Which event occurs during high tide?

A
All of Earth’s ocean levels rise.
B
The moon’s orbit is closer to Earth.
C
The gravity of the Sun and moon cause the Earth’s crust and water to bulge.
D
Earth’s crust and water are being pulled in opposite directions by the Sun and moon.
18

What occurs when the moon blocks the view of the Sun?

A
neap tide
B
spring tide
C
solar eclipse
D
lunar eclipse
19

Which phrase describes the composition of the outer planets?

A
are gaseous
B
contain water
C
have high densities
D
are made mostly of liquid
20

According to the big bang theory, which statement is accurate about how the universe came to be?

A
It expanded slowly.
B
It gradually warmed.
C
Stars and galaxies formed.
D
Atoms such as hydrogen were destroyed.

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