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1. 
What is the name of our galaxy?
A.
Alpha Centauri
B.
The Moon
C.
The Milky Way
D.
Rigel
2. 
How many stars are there in our galaxy?
A.
1,000
B.
100,000
C.
1,000,000
D.
more than 10,000,000,000
3. 
Reorder these elements from the biggest to the smallest: Earth / galaxy / universe / Sun / Moon
4. 
How many types of planets are there in the Solar System?
A.
1
B.
2
C.
3
D.
4
5. 
What is the Moon?
A.
a planet
B.
a natural satellite
C.
an asteroid
D.
a star
6. 
Why do the Moon and the Sun appear to be roughly the same size from the Earth?
A.
Because the moon is 400 times smaller than the Sun
B.
Because the Moon is 400 times closer than the Sun
C.
Because the Moon is 400 times larger than the Sun
D.
Because the Moon is 400 times further away than the Sun
7. 
In our Solar System, the smallest gas giant is...
8. 
In our Solar System, the largest terrestrial planet is...
9. 
The sun is the largest star in the universe.
A.
True
B.
False
10. 
Apart from the dwarf planets, the smallest terrestrial planet in our solar system is ...
A.
Earth
B.
Mercury
C.
The Moon
D.
Venus
11. 
The asteroid belt is located between the orbits of ...
A.
The Earth and Mars
B.
Mars and Saturn
C.
Mars and Jupiter
D.
Saturn and Uranus
12. 
How many of the Gas Giants have rings?
A.
1: Saturn
B.
2: Saturn and Uranus
C.
3: Saturn, Uranus and Neptune
D.
All 4 of them: Jupiter, Saturn, Uranus and Neptune
13. 
What is true about Pluto?
A.
It was discovered in 1940
B.
It has a perfectly round orbit
C.
It was reclassified as a "dwarf planet" in 2006
D.
It is smaller than our own Moon
14. 
Why was Pluto reclassified as a "dwarf planet"?
A.
Because it is Neptune's satellite
B.
Because it doesn't have enough mass and it isn't round enough
C.
Because it crosses inside of Neptune's orbit
15. 
The largest moon in the solar system is ...
A.
Io
B.
Ganymede
C.
Europa
D.
Callisto
16. 
Why is Venus considered as Earth's "sister" planet?
A.
Because it is the closest planet to Earth
B.
Because it is similar to Earth in size and mass
C.
Because it has nearly the same gravity
D.
Because it also has one moon
E.
Because its atmosphere is similar to that of Earth
17. 
Which planets in the solar system rotate clockwise ?
A.
The Earth
B.
Venus
C.
Venus and Uranus
D.
Venus and the Earth
18. 
What will happen when the Sun runs out of hydrogen?
A.
It will explode
B.
It will start burning Helium and swell like a balloon
C.
It will burn all its Helium then shrink into a white dwarf
D.
It will suddenly stop shining