Solar system and Energy

A planet is...

• a hot ball of gas...

• something that can produce its own light...

• a body that orbits around another planet...

• a body of rock or gas that orbits a star.

Which of the following is an inner planet?

• Saturn

• Jupiter

• Pluto

• Venus

Which of the following is an outer planet?

• Earth

• Mars

• Neptune

• Venus

Why do planets look a lot like stars?

• the suns light reflects off the planets surface

• planets are stars

• planets and stars are the same size

• All of the above

This astronomer believed in the Geocentric Model?

• Galileo

• Kepler

• Ptolemy

• Copernicus

How many planets are in the solar system

• 6

• 7

• 8

• 9

Force of attraction that occurs between masses and draws objects toward each other

• Planets

• geocentric model

• elliptical model

• Gravity

Which object has the most gravity?

• Earth

• Moon

• Jupiter

• Sun

What force holds the planets in motion around the sun?

• Magnetic

• Electrical

• Air Resistance

• Gravitational

The gravitational force exerted by an object depends on its

• Volume

• Mass

• Weight