Universe Intro

Scientist say that the universe was created with a single mass explosion called ....

• the Geocentric Theory

• the Big Bang Theory

• The Heliocentric Theory

List the astronomical bodies in order from smallest to largest.

• Universe , Solar System, and Milky Way Galaxy

• Milky Way Galaxy, Universe, Solar System

• Solar System, Universe, Milky Way Galaxy

• Solar System, Milky Way Galaxy, and Universe

What type of galaxy is our Milky Way Galaxy?

• Spiral

• Elliptical

• Irregular

Geocentric theory states that ________ is in the center. This theory isn't accurate, because the planets revolve around the sun.

• Sun

• Earth

• Asteroids

• Comets

How old is Earth?

• 10.3 billion years old

• 4.6 billion years old

• 5.2 billion years old

• 6.4 billion years old

Which galaxy is Earth in?

• Andromeda Galaxy

• Sombrero Galaxy

• Milky Way Galaxy

Gravity keeps the planets from ....

• moving around the Sun.

• exploding and becoming a part of another solar system.

• floating off in space

_____________ causes the planets to revolve (move) around the sun.

• Diffusion

• Inertia

• Gravity

• Nuclear fusion

Earth orbits the sun ...

• circular (in a circle)

• geosynchronous

• elliptically (oval)

_____________ theory means the sun is in the center and that the planets revolve around it.

• Heliocentric

• Geocentric