Solar System Review

What holds the planets in their orbits around the sun?

• gravity
• speed
• string
• air currents

An _______ is between the orbits of Mars and Jupiter. 

• Oort Cloud
• Asteroid belt
• Kuiper belt
• Photosphere

Venus, Mercury, Earth, and Mars are what type of planet?

• Gas Giants
• Ice Giants
• Terrestrial Planets
• Exterior Planets

Which choice shows the correct order of the planets?

• Mars, Venus, Earth, Mercury, Jupiter, Saturn, Uranus, Neptune
• Earth, Venus, Mars, Mercury, Jupiter, Saturn, Uranus, Pluto
• Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
• Saturn, Venus, Mars, Mercury, Jupiter, Neptune Mercury, Uranus

The four terrestrial planets all have

• Rocky surfaces
• Hot temperatures
• Deep atmospheres
• Large size

Planets that are closer to the sun

• take more time to orbit
• take less time to orbit

What is true of all planets in our Solar System?

• They are large bodies in space that orbit the Sun
• Planets do not move, only stars move
• Planets make their own light
• Planets are larger than stars

True or False
The planets are all equally distanced from each other.

• True
• False

Which is the farthest planet to the Sun?

• Uranus

• Neptune

• Saturn

• Jupiter

Which is the closest planet to the Sun?

• Earth

• Mars

• Mercury

• Venus