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