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The solar system Quiz for Grade 5

10 science questions on the solar system with answers, written for Grade 5. Use it as it is, change any question, print it with an answer key, or give it online and let it grade itself.

1.
Which planet is known as the Red Planet? (Multiple choice)
  1. Venus
  2. Mars
  3. Jupiter
  4. Saturn
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Mars

Mars is called the Red Planet because of its reddish appearance due to iron oxide on its surface.
2.
What is the largest planet in our solar system? (Multiple choice)
  1. Neptune
  2. Earth
  3. Saturn
  4. Jupiter
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Jupiter

Jupiter is the largest planet in the solar system by size and mass.
3.
Which planet is closest to the Sun? (Multiple choice)
  1. Venus
  2. Mars
  3. Earth
  4. Mercury
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Mercury

Mercury is the closest planet to the Sun.
4.
The Moon is a planet in our solar system. (True or false)
  1. True
  2. False
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False

The Moon is a natural satellite, not a planet.
5.
The planet known for its rings is called _____. (Fill in the blank)
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Saturn

Saturn is famous for its prominent ring system.
6.
Name the star at the center of our solar system. (Identification)
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Sun

The Sun is the star at the center of the solar system.
7.
Which planet has the most moons? (Multiple choice)
  1. Jupiter
  2. Venus
  3. Earth
  4. Mars
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Jupiter

Jupiter has the most moons among the planets in our solar system.
8.
Venus is hotter than Mercury even though it is farther from the Sun. (True or false)
  1. True
  2. False
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True

Venus has a thick atmosphere that traps heat, making it hotter than Mercury.
9.
Match each planet with its characteristic. (Matching type)
1. Earth
A. Has prominent rings
2. Mars
B. Largest planet
3. Jupiter
C. Known as the Red Planet
4. Saturn
D. Has liquid water
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1 = Has liquid water; 2 = Known as the Red Planet; 3 = Largest planet; 4 = Has prominent rings

Each planet has unique features that distinguish it.
10.
Give three planets that are gas giants. (Enumeration)
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Jupiter, Saturn, Neptune

Jupiter, Saturn, and Neptune are gas giants because they are mostly made of gases.