4.5 What Are Planets & Stars

1. We live on a planet called ______.

• A. Mars
• B. Venus
• C. Earth

2. A _________ is a large ball of rock or gas that moves around the sun.

• A. solar system
• B. star
• C. planet

3. There are ________ planets in our solar system.

• A. 8
• B. 9
• C . 10

4. Which is the closest planet to the Sun?

• A. Neptune
• B. Mercury
• C. Earth

5. When can you sometimes see parts of the solar system?

• A. only at night
• B. only in the morning
• C. only at noon

6. The sun, the planets, and the planets' moons are parts of our _______.

• A. meteors
• B. asteroids
• C. solar system

7. The planet ________ is the farthest from the Sun.

• A. Mars
• B. Jupiter
• C . Neptune

8. Which of the following is the center of the solar system?

• A. the moon
• B. the sun
• C. Orion's Belt

9. It takes _________ for the Earth to make one orbit around the sun.

• A. 3 years
• B. 24 hours
• C. 1 year

10. What gives off light and heat from a star?

• A. the strong winds
• B. the hot gases
• C. the reflection from comets