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Solar system and gravity test

The 8th-grade Solar System and Gravity Test helps students practice understanding orbits, gravity, and solar system objects through multiple-choice and short-answer questions, encouraging application of concepts like planetary motion, dwarf planets, and orbital paths.

By Edform · Science · Grade 8 · Published Oct 15, 2026 · New

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Questions

  1. Which force keeps the planets in orbit around the Sun?
  2. Which of the following are classified as dwarf planets in our solar system?
  3. The farther a planet is from the Sun, the longer its orbital period.
  4. What is the name of the path that a planet follows as it moves around the Sun?
  5. If Earth takes 1 year to orbit the Sun, approximately how many years does Jupiter take to complete one orbit? (Round to the nearest whole number.)
  6. Which planet is known for its prominent ring system?
  7. Which type of object is the belt between Mars and Jupiter mostly made of?
  8. The Sun is the largest object in our solar system.
  9. What is the name of the force that causes a falling apple to move toward the ground?
  10. Which planet is closest to the Sun?

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