Earth Systems: U1.2a & 1.2b.Hogan

Energy from vibrations and molecules colliding is called...

• Heat

• Electrical

• elastic

• gravitational

Neptune has an ___ of 164 years.

• rotation

• orbital period

• average age

• revolves

Answer explanation

Remember... on tests, the answer has to be grammatically correct!!

"Space rocks" that enter Earth's atmosphere are called

• meteorites

• asteroids

• comets

• UFO's

Earth has a ___ core.

• magnetic

• liquid

• cold

• elastic

365 days = Earth's _____

• revolution

• rotation

• birthday

• summer season

Waves that travel through the Earth

• sound

• ocean

• surface

• seismic

Repeated path that a body (like Earth) takes when traveling around another body (like the sun)

• rotation

• spinning

• orbit

• revolution

Which planet is known as the Red Planet?

• Venus

• Saturn

• Mars

• Jupiter

What force keeps the planets in orbit around the sun?

• Magnetism

• Gravity

• Friction

• Electricity

The inner layer of the Earth is called the

• inner core

• outer core

• mantle

• crust