- 1. Which is a tool that astronomers use?
A) optical telescope B) hammer C) moon D) stethaschopenhagen
- 2. Which is a tool that astronomers use?
A) radio telescope B) steth seeker C) optical probe D) porsle sight
- 3. The optical teleschope was invented about how long ago?
A) 100 years ago B) 200 years ago C) 400 years ago D) 300 years ago
- 4. A radio teleschope collects what?
A) pictures of outerspace. B) radio waves C) sound waves D) music
- 5. What is something doing when it circles another object? It is.....
A) circling B) rotating C) orbiting D) day
- 6. What is a force that pulls objects to each other?
A) gravity B) solar sytem C) rotate D) orbit
- 7. What is the time that it takes the Earth to circle the sun once?
A) day B) year
- 8. What is the time that it takes the Earth to spin around once?
A) year B) day
- 9. There are _________ planets in the solar system.
A) 365 days B) 10 (counting the sun) C) nine D) eight
- 10. Every time the Earth orbits the sun, one _________ goes by
A) week B) month C) year D) day
 - 11. Which planet is closest to the sun?
A) Venus B) Earth C) Mercury D) Pluto
 - 12. Which planet is the biggest?
A) Mercury B) Jupiter C) Sun D) Earth
- 14. The solar system includes the planets that orbit _______.
A) nine planets B) the sun C) moons D) once a year
- 15. We first landed on the moon in.....
A) 1969 B) 2008 C) We haven't yet. D) 1996
 - 16. How many phases ore there in a moon?
A) 8 B) 4 C) 10
- 17. It takes about one ___________ for the moon to orbit the Earth.
A) 366 days during a leap year B) month C) week D) 24 hours
- 18. When the moon looks like a thick eyelash it is called a _____________ moon.
A) crater B) Gibbious C) crescent D) full
- 19. If Earth were the size of a basketball, the moon would be about the size of a ________________.
A) balloon B) pinpong ball C) soccerball D) tennis ball
- 20. The most common landforms on the moon are__________.
A) rocks B) craters C) mountians D) lakes
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