Space

Which planets are gas giants?

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

How is Venus most like Earth?

• They both have polar caps.
• They both have liquid water on the surface.
• They are both the same temperature.
• They are about the same size

All of the inner planets have polar caps.

• True
• False

What unusual characteristic do Jupiter, Saturn, Uranus, and Neptune have that the other planets do not have?

• Liquid surface water
• solid cores
• rings
• moons

What did the meteorite that struck Earth 65 million years ago cause?

• Global warming
• Mass extinction
• Tsunami
• Hurricane

Which planet is the largest?

• Mercury
• Jupiter
• Saturn
• Uranus

A rock from space that strikes Earth is called a _________

• meteor
• meteoroid
• asteroid
• meteorite

Why do most of the meteoroids that enter Earth's atmosphere do not land on Earth?

• The moons gravity pulls them back to outer space
• They get trapped in the upper atmosphere.
• Friction vaporizes them
• They are reflected by dust in the air.

Where is the main asteroid belt located?

• Between Earth and Mars
• Between Jupiter and Saturn
• Between Jupiter and Mars
• Saturn and Uranus

Earth is the only inner planet known to have...

• Mountains
• Liquid surface water
• Craters
• Volcanoes