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1. How many planets do we have in our solar system?
A
7
B
8
C
9
2. What is the closest planet to the Earth?
A
Jupiter
B
Mars
C
Venus
3. What is the coldest planet in our solar system?
A
Earth
B
Neptune
C
Saturn
4. How far away is the Sun from the Earth?
A
about 150 million km away
B
about 250 million km away
C
about 350 million km away
5. Which planet in our solar system is closest to the Sun?
A
Venus
B
Uranus
C
Mercury
6. When was Pluto considered to be a dwarf planet?
A
1995
B
2002
C
2006
7. About how long does it take the Moon to circle the Earth?
A
About a year
B
About 28 days
C
About a day
8. What is the sun mainly made of?
A
lava
B
rock
C
gas
9. Which of the following planets is the smallest?
A
Uranus
B
Mercury
C
Earth
10. How many moons does Mars have?
A
1
B
2
C
3
11. The largest volcano in the Solar System is called 'Olympus Mons'. Where is it located?
A
Jupiter
B
Venus
C
Mars
12. What planet is the densest in our solar system, and also has only one satellite?
A
Earth
B
Saturn
C
Uranus