- 1. Which is a tool that astronomers use?
A) moon B) stethaschopenhagen C) optical telescope D) hammer
- 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) 200 years ago C) 100 years ago D) 300 years ago
- 4. A radio teleschope collects what?
A) sound waves B) music C) pictures of outerspace. D) radio waves
- 5. What is something doing when it circles another object? It is.....
A) day B) circling C) rotating D) orbiting
- 6. What is a force that pulls objects to each other?
A) orbit B) rotate C) solar sytem D) gravity
- 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) year B) day
- 9. There are _________ planets in the solar system.
A) nine B) eight C) 10 (counting the sun) D) 365 days
- 10. Every time the Earth orbits the sun, one _________ goes by
A) month B) week C) year D) day
 - 11. Which planet is closest to the sun?
A) Earth B) Mercury C) Pluto 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) once a year B) nine planets C) moons D) the sun
- 15. We first landed on the moon in.....
A) 1969 B) 1996 C) We haven't yet. D) 2008
 - 16. How many phases ore there in a moon?
A) 10 B) 4 C) 8
- 17. It takes about one ___________ for the moon to orbit the Earth.
A) 366 days during a leap year B) week C) month 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) pinpong ball B) balloon C) tennis ball D) soccerball
- 20. The most common landforms on the moon are__________.
A) craters B) mountians C) rocks D) lakes
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