Solar System Quiz 1 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. Which describes a characteristic that is shared by different galaxies in the universe?

Correct Answer: C) They all formed because of gravity.

2. Which planet is found between Earth and Jupiter?

Correct Answer: C) Mars.

3. What gas is the Sun mostly made of?

Correct Answer: A) Hydrogen.

4. The Asteroid Belt is located between which two planets?

Correct Answer: B) Mars and Jupiter.

5. Which of the following is the longest distance?

Correct Answer: B) 1 Ly.

6. Scientists theorize that the asteroid belt did not form a planet because .....

Correct Answer: A) Jupiter's gravity kept it from forming.

7. A group of stars that make a pattern in the night sky.

Correct Answer: D) Constellation.

8. How many planets are in the solar system?

Correct Answer: B) 8.

9. Which of these describes rotation?

Correct Answer: C) Earth makes one turn on its axis every 24 hours.

10. Earth revolves around the

Correct Answer: A) Sun.

11. Earth spins on its axis in how many hours?

Correct Answer: B) 24.

12. What is an astronomical unit (A.U.)?

Correct Answer: C) The distance between the Earth and the Sun.

13. When did our Solar System form?

Correct Answer: D) 5 billion years ago.

14. What is the force that holds objects in orbit around the Sun?

Correct Answer: C) Gravity.

15. Which planet has iron in the soil that gives it a red color, just like iron-rich soil on Earth

Correct Answer: C) Mars.

16. The force of gravitational attraction between the Sun and Venus could be increased by reducing which of the following?

Correct Answer: D) The distance between the Sun and Venus.

17. Which planet is the hottest

Correct Answer: B) Venus.

18. The Moon is seen because

Correct Answer: A) Sunlight reflects off of its surface.

19. The planet with the shortest year is

Correct Answer: D) Mercury.

20. ..... are small pieces of rock moving through space.

Correct Answer: C) Meteoroids.