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