1.1 - Big Bang Theory

Galaxies that are redshifted are:

• actually blue.
• really far away.
• invisible.
• moving away from us.

The universe is expanding!  This means that:

• all of the galaxies are spreading out.
• the universe must have started from a single point.
• the universe is cooling down.
• all of the above.

The cosmic background radiation is:

• the remaining energy from the big bang.

• incredibly hot.

• visible to the human eye.

• only located in certain places in the universe.

The universe is ____________ years old.

• 8.13 billion
• 13.8 billion
• 1.83 billion
• 381 million

The Big Bang:

• is NOT an explosion in space.
• is an expansion OF space.
• is our best explanation for the beginning of the universe.
• All of the above.

The greater the redshift:

• the faster the galaxy is moving.
• the shorter the light waves.
• the bigger the galaxy.
• the closer the galaxy.

The most abundant element in the universe today is:

• water
• hydrogen
• oxygen
• carbon

The universe is expanding.  This means that:

• Galaxies are getting bigger.
• Atoms are getting bigger.
• The universe is creating more matter.
• The amount of space between galaxies is increasing.

The Big Bang Theory explains the formation of the...

• Earth

• Sun

• Universe

• Solar System

What does the Big Bang theory suggest?

• The universe was just there

• The Milky Way is the only solar system

• The universe is continually expanding

• The universe is collapsing in toward a single point