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Free Practice Quiz Question List

03 The Solar System Online Quiz Questions

Use this free practice quiz with 20 questions to review 03 The Solar System, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

True or false: The Sun is a solid body with a visible surface.

  1. A

    True

  2. B

    False

02
Choose one
1 point

In the hot inner part of the early Solar System’s disk, which materials could readily condense into solids and contribute to the formation of the inner planets?

  1. A

    Water and other volatile substances

  2. B

    Rock and metal

  3. C

    Hydrogen and helium gas only

  4. D

    Ice and dust only

03
Written response
1 point

What is the term for the gradual growth of bodies as they gather material during planet formation?

04
True or false
1 point

True or false: Jupiter’s gravitational influence was one reason the asteroid belt did not become a planet.

  1. A

    True

  2. B

    False

05
Choose one
1 point

A small piece of rock or metal traveling through space reaches the ground. What is it called?

  1. A

    Meteor

  2. B

    Meteorite

  3. C

    Comet

  4. D

    Asteroid

06
Written response
1 point

What is the name of the Sun’s visible surface?

07
Choose all
1 point

Select all supported ways that moons can originate.

  1. A

    Some moons formed from disks of material around young planets.

  2. B

    Some moons were captured by a planet’s gravity.

  3. C

    Some moons formed from debris after a collision.

  4. D

    All moons formed as planets and were never affected by gravity or collisions.

08
Choose one
1 point

Which feature distinguishes a dwarf planet from a planet under the Solar System definition given in the material?

  1. A

    It does not orbit the Sun.

  2. B

    It is not nearly round.

  3. C

    It has not cleared most other objects from its orbital neighborhood.

  4. D

    It must have no moons.

09
Choose all
1 point

Select all statements that accurately distinguish the Kuiper Belt from the Oort Cloud.

  1. A

    The Kuiper Belt lies beyond Neptune and includes Pluto.

  2. B

    The Kuiper Belt is a directly observed, roughly spherical cloud much farther away than Neptune.

  3. C

    The Oort Cloud is a predicted, roughly spherical reservoir of icy objects that has not been directly observed.

  4. D

    The Oort Cloud is the main rocky asteroid belt between Mars and Jupiter.

10
Open ended
1 point

Describe one way a planetary system around another star could be arranged differently from the Solar System, and explain what comparing such systems can help astronomers investigate.

11
Choose one
1 point

Which officially recognized dwarf planet lies in the asteroid belt?

  1. A

    Eris

  2. B

    Ceres

  3. C

    Pluto

  4. D

    Makemake

12
Choose one
1 point

As the region of gas and dust that formed the Solar System collapsed under gravity, what structure did it become?

  1. A

    A spherical cloud that stopped rotating

  2. B

    A rotating disk of gas and dust

  3. C

    A ring made only of rocky planetesimals

  4. D

    A pair of stars orbiting one another

13
Choose one
1 point

Which explanation best accounts for rocky planets forming close to the Sun and giant planets forming farther away?

  1. A

    The inner planets formed from more frozen volatiles than the outer planets.

  2. B

    The outer planets formed where temperatures prevented any solids from forming.

  3. C

    Rock and metal could condense close to the Sun, while frozen volatiles added material farther out.

  4. D

    The Sun's heat made the same materials condense throughout the disk.

14
Choose one
1 point

A newly studied object orbits the Sun, is nearly round because of its own gravity, and has cleared most other objects from its orbital neighborhood. Under the Solar System planet definition, how should it be classified?

  1. A

    A planet

  2. B

    A dwarf planet

  3. C

    A moon

  4. D

    An asteroid

15
Choose one
1 point

Which pair of planets are ice giants, containing larger proportions of substances such as water, ammonia, and methane beneath their atmospheres?

  1. A

    Jupiter and Saturn

  2. B

    Uranus and Neptune

  3. C

    Mercury and Mars

  4. D

    Earth and Venus

16
True or false
1 point

All four giant planets in the Solar System have ring systems, even though Saturn's rings are the most conspicuous.

  1. A

    True

  2. B

    False

17
Written response
1 point

What is the name of the rotating disk of gas and dust formed as the collapsing cloud contracted?

18
Written response
1 point

How many officially recognized dwarf planets are listed in the material?

19
Fill in the blank
1 point

When an icy comet approaches the Sun, its ice can , releasing gas and dust that form a glowing and sometimes a tail.

20
Fill in the blank
1 point

A rocky body is found orbiting an asteroid rather than a planet. Under the material’s definition of a natural satellite, the rocky body is a .