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Terrestrial Planets

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6th Grade Science Solar System unit quiz on the Terrestrial Planets

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Questions 10

Answers

1
What does an astronomical unit equal? (There are two correct answers!)
The distance between the sun and Earth.
The distance between the sun and Mercury.
Approximately 150 million kilometers.
Approximately 120 million miles.
2
Which of these is the main reason Venus is the hottest planet in our solar system?
The rotation affects how sun's rays enter the atmosphere.
The surface absorbs solar radiation.
The atmosphere reflects light back into space.
The atmosphere radiates heat back to the surface.
3
Venus's rotation is retrograde. This means that Venus spins...
clockwise
counter clockwise
4
Which terrestrial planets have diameters that are nearly equal in size?
Mars and Venus
Earth and Venus
Mars and Mercury
Earth and Mars
5
How long is one day on Mercury? (in Earth days)
59 Earth days
79 Earth days
1 Earth day
29 Earth days
6
Which of the following statements best describes the characteristics of terrestrial planets?
rocky cores, close to sun, surface craters
made up of hydrogen and helium, small, close to sun
small, dense, rocky surfaces
large, planetary rings; many moons
7
Mercury has no axial tilt, like Earth does. How does the lack of tilt affect Mercury's seasons?
Mercury has longer seasons.
Mercury has two seasons.
Mercury has no seasons.
Mercury has shorter seasons.
8
Which terrestrial planet has the highest average temperature?
Earth
Mars
Venus
Mercury
9
What are the four terrestrial planets?
Mercury, Venus, Mars, Neptune
Jupiter, Saturn, Uranus, Neptune
Mercury, Earth, Jupiter, Mars
Mercury, Venus, Earth, Mars
10
Which terrestrial planet besides Earth has at least one moon?
Mars
Venus
Mercury
Earth