Unit 3 Earth and the Sun Review

Front

What does 'geo-' mean?

Back

Earth

Front

What is the biggest difference between the Geocentric Model and the Heliocentric Model?

Back

The object at the center of the universe

Front

How old is our solar system?

Back

4.6 billion years

Front

Why are the outer planets made of mostly gas and ice?

Back

The sun's gravity pulled rock and metal to the inner solar system but it was too hot for gas and ice to condense there.

Front

Inside the Asteroid Belt is located in which part of the solar system?

Back

Inner

Front

What is the Geocentric Model?

Back

A model of the universe where Earth is at the center and all other celestial bodies revolve around it.

Front

What is the Heliocentric Model?

Back

A model of the universe where the Sun is at the center and the planets, including Earth, revolve around it.

Front

What are the inner planets primarily made of?

Back

Rock and metal.

Front

What are the outer planets primarily made of?

Back

Gas and ice.

Front

What is the Asteroid Belt?

Back

A region of space between the orbits of Mars and Jupiter where most asteroids are found.