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