- 1. What is at the center of our solar system?
A) a galaxy
B) the sun
C) Earth
D) a black hole
- 2. The group of planets closest to the sun are called the --
A) milky way planets
B) small planets
C) inner planets
D) outer planets
- 3. Which list names the four planets closest to the sun, starting at the sun and moving outward?
A) Mars, Venus, Earth, Mercury
B) Earth, Venus, Mercury, Mars
C) Mercury, Venus, Earth, Mars
D) Venus, Mercury, Earth, Mars
- 4. Which word best describes the surfaces of the four planets closest to the sun?
A) gassy
B) frozen
C) rocky
D) liquid
- 5. Another name for the four planets closest to the sun is the _____ planets.
A) outer
B) solid
C) terrestrial
D) gas giants
- 6. Which planet is known as "the red planet"?
A) Mars
B) Venus
C) Neptune
D) Uranus
- 7. Which planet is the hottest planet?
A) Venus
B) Earth
C) Mercury
D) Jupiter
- 8. Which planet is the only one in our solar system with lakes and oceans of liquid water?
A) Neptune
B) Mercury
C) Venus
D) Earth
- 9. Which planet is closest to the sun?
A) Mercury
B) Mars
C) Earth
D) Venus
- 10. What divides the eight planets in our solar system into two groups?
A) stars
B) Milky Way
C) Asteroid Belt
D) a black hole
- 11. What is the name for the four planets furthest from the sun?
A) rocky planets
B) inner planets
C) outer planets
D) terrestrial planets
- 12. Which list names the four planets furthest from the sun, starting at the sun and moving outward?
A) Neptune, Uranus, Saturn, Jupiter
B) Jupiter, Saturn, Uranus, Neptune
C) Saturn, Jupiter, Neptune, Uranus
D) Uranus, Saturn, Neptune, Jupiter
- 13. Which word best describes the surfaces of the four planets furthest from the sun?
A) melted
B) liquid
C) gassy
D) rocky
- 14. Because of what they are made of, and because of their size, the four planets furthest from the sun are also called the --.
A) terrestrial planets
B) moonless planets
C) gas giants
D) rocky planets
- 15. Which planet has hundreds of rings?
A) Saturn
B) Neptune
C) Uranus
D) Jupiter
- 16. Which planet is the largest planet?
A) Earth
B) Uranus
C) Venus
D) Jupiter
- 17. Which planet rotates on its side?
A) Earth
B) Jupiter
C) Uranus
D) Neptune
- 18. Which planet is furthest from the sun?
A) Earth
B) Neptune
C) Mercury
D) Jupiter
- 19. Which planet has a huge storm called the Great Red Spot?
A) Saturn
B) Neptune
C) Mars
D) Jupiter
- 20. Starting at the Asteroid Belt and moving out toward space, the planets do what?
A) increase in size
B) change from sphere-shaped to oval-shaped
C) decrease in size
D) become warmer
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