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Astronomy Unit 3: The Solar System Practice

Total questions: 16

Worksheet time: 20mins

Name
Class
Date
1.
Which planets are relatively small, and primarily made out of silicate minerals?
a)
gas giants
b)
ice giants
c)
terrestrial planets
d)
dwarf planets
2.
These planets are mostly made out of hydrogen and helium.
a)
gas giant
b)
ice giant
c)
dwarf planets
d)
terrestrial planets
3.

The most massive gas giant planet.

a)

Jupiter

b)

Saturn

c)

Uranus

d)

Neptune

4.

Choose the best answer. Which planet(s) have rings?

a)

Saturn

b)

All of the terrestrial planets

c)

All of the gas giant planets

d)

Mars and Saturn

5.
Which of the following is NOT a requirement for something to be considered a dwarf planet?
a)
The object must directly orbit around a star.
b)
The object has not cleared the neighborhood of other material around its orbit.
c)
The object is a sphere.
d)
The object cannot orbit around a planet.
6.

Are plutoids minor planets?

a)

Some are, but most are not.

b)

Most are, but some are not.

c)

Yes

d)

No

7.

Are comets minor planets?

a)

Yes

b)

No

c)

Some are, most are not

d)

Most are, some are not

8.

Eris is a dwarf planet. Is it a planet?

a)

Yes

b)

No

9.

The Moon is a(n) _________.

a)

dwarf planet

b)

natural satellite

c)

terrestrial planet

d)

asteroid

10.

Which of the following is true of all asteroids in the Solar System?

a)

They are all found after Neptune.

b)

They are found in a belt between Mars and Jupiter.

c)

They are larger than Mercury.

d)

They orbit around the Sun.

11.
Which of the following is by far the biggest asteroid?
a)
Halley's Comet
b)
Ceres
c)
Pluto
d)
Venus
12.
Where in the solar system are most asteroids found?
a)
Asteroid Belt and Kuiper Belt
b)
Between Venus and Mars
c)
Orbiting Saturn
d)
Beyond Neptune's orbit
13.
Where is the Oort Cloud?
a)
Between Mars and Jupiter
b)
Between Uranus and Neptune.
c)
Beyond the Kuiper Belt.  It is believed to be at the boundary of the solar system.
d)
Between Neptune and the Kuiper Belt.
14.

Which part of a comet always faces towards the Sun?

a)

Coma

b)

Tail

15.

Which of the following has the most eccentric orbit?

a)

gas giant planets

b)

terrestrial planets

c)

Earth

d)

comets

16.
Which of the following are currently being considered for mining operations in space?
a)
comets
b)
Mercury
c)
Uranus
d)
asteroids