Space and Planets Quiz

Use this answer key after players complete the quiz or when reviewing a printed worksheet.

1. Which planet is known as the Red Planet?

Correct answer: B. Mars

Explanation: Mars is called the Red Planet because its surface has reddish iron-rich dust.
2. Which planet is the largest in our solar system?

Correct answer: C. Jupiter

Explanation: Jupiter is the largest planet in our solar system.
3. What does Earth orbit?

Correct answer: B. The Sun

Explanation: Earth travels around, or orbits, the Sun.
4. What is the name of Earth's natural satellite?

Correct answer: A. The Moon

Explanation: The Moon is Earth's natural satellite.
5. Which planet is famous for its large rings?

Correct answer: A. Saturn

Explanation: Saturn is famous for its bright ring system.
6. What is a star?

Correct answer: A. A hot ball of glowing gas

Explanation: A star is a hot ball of glowing gas that produces light and heat.
7. Which planet is closest to the Sun?

Correct answer: A. Mercury

Explanation: Mercury is the planet closest to the Sun.
8. What force helps keep planets in orbit?

Correct answer: A. Gravity

Explanation: Gravity pulls objects together and helps keep planets in orbit around the Sun.
9. Which object is made mostly of ice, dust, and rock and may have a tail near the Sun?

Correct answer: A. Comet

Explanation: Comets are icy objects that can form tails when they pass near the Sun.
10. How many planets are currently recognized in our solar system?

Correct answer: B. 8

Explanation: There are eight recognized planets in our solar system.

1. Which planet is known as the Red Planet?