Astronomy - Galaxies Test Review

What is astronomy?

• The study of the universe and eveything in it.

• Nothing else.

The observable Universe is ___________

• It is getting smaller.

• Same ole, same

How much of the Universe is thought to be dark matter?

• 18%

• 24%

• 89%

Dark energy in the Universe makes up ______ of it?

• 1%

• 5%

• 71%

Your Balloon Lander project in class demonstrated the idea of ________

• Thust

• Mass

• Sound

Normal matter in the Universe makes up ______ of it?

• 5%

• 28%

• 79%

An object moving towards an observer means it will be _____ color

• Blue

• Red

The universe thought to be _________

• thousand years old

• billion years old

• trillion years old

An object moving away from an observer means it will be _____ color

• Blue

• Red

By looking at galaxies Edwin Hubble noticed what?

• The farther away a galaxy was, the greater the red-shift of the galaxy.

• The universe is a small place, yet dark place.