Universe review

What are the the 3 types of galaxies?

• Spiral Galaxies, Regular Galaxies, and Lliptical Galaxies
• Spiral Galaxies, Irregular Galaxies, and Elliptical Galaxies
•  Milky Way, Elliptical Galaxies, and Spiral Galaxies
• Milky Way, Elliptical Galaxies, and Irregular Galaxies

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular 
• Irrational

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular
• Irrational

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular
• Irrational

Place these objects in order from smallest to largest.

• Planets, solar system, universe, galaxy
• Solar system, planets, galaxy, universe
• Planets, solar system, galaxy, universe
• Galaxy, solar system, planets, universe

Distance measurement used by astronomers for distant objects.

• Kilometers
• Light Years
• Miles
• Light Seconds

A galaxy is a large collection of stars, gas and dust. What is responsible for holding the stars, gas, and dust together in a galaxy?

• heat
• light
• gravity
• friction

What is the Big Bang Theory?

• a big explosion from the sun

• describes how the universe began

• planets giving off gases

• dust and particles near planets

The expanding universe: How did Hubble discover the universe was expanding?

• He observed galaxies moving closer to each other

• He observed galaxies moving away from each other

• He was there when the big bang happened

• He noticed we were closer to the sun

A theory that says the universe began as a small point that expanded rapidly about 13.8 billion years ago

• Milky Way Galaxy

• universe

• orbit

• Big Bang Theory