1. ____________ means wandering stars. *
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Sun
planets
asteroids
meteors
2. There are ____________ planets that you can see with the naked eyes. *
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four
three
five
two
3. There are lots of planets that orbit other stars. They are called ________________. *
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dwarf planets
meteorites
inner planets
exoplanets
4. Saturn has ____________ moons. *
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60
16
40
50
5. A ____________ is made of ice and dust like a big, dirty snowball orbiting the Sun. *
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meteor
comets
meteorite
satellite
6. The Earth spins on its _____________. *
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orbit
path
axis
equator
7. The Earth takes _________ hours to complete one spin. *
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24
23
22
25
8. _______________ is hundreds of times bigger than our Sun. *
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Pollux
Sirius
Arcturus
a and b
9. All of them are constellations except ______________. *
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Plough
Polaris
Cassiopeia
Crux
10. The Southern pole star is called the _______________. *
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Stigma Octantis
Dubhe
Merak
Ursa Major
11. The Sun was born from a cloud of gas and dust called a ______________. *
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comet
meteor
nebula
red giant
12. ____________ gas is used in nuclear fusion reactions to produce the energy that makes the Sun shine. *
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Nitrogen
Oxygen
Helium
Hydrogen
13. A star that is much bigger than our Sun is called a _____________. *
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supernova
massive star
neutron star
black dwarf
14. A ______________ is a collection of stars that makes a pattern in the sky.. *
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galaxy
milky way
constellation
main sequence
15. ________________ are called as gas giants. *
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Jupiter
Saturn
Mars
both a and b
16. _____________ is the hottest inner planet. *
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Mercury
Venus
Mars
Earth
17. Inner planets are made of __________. *
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rocks
dust
ice
gas
18. Mars is also known as the Red planet because the surface is made of a red mineral that contains _______. *
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copper
zinc
iron
tin
19. Uranus and Neptune are made up of ____________. *
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ice
rock
gas
all of the above
20. There are _________ dwarf planets in the solar system. *
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four
five
seven
eight