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