1. All of matter and energy that exists is the

universe Milky Way galaxy solar system

2. The study of the what makes up the universe and how it has grown and changed is called

cosmetology cometology cosmology

3. The main source of energy in the universe is

the changing of the matter of the stars into energy by thermonuclear reactions

solar power

electric power

4. This theory says the universe is between 8 and 13 billion years old.

Thermonuclear Theory Steady State Big Bang

5.This theory says that the universe has been in existence for all time.

Thermonuclear Theory Steady State Big Bang

6. The strongest force in the universe is

heat magnetic gravity

7. It is difficult to measure the size of the universe because

No manned apace ships have traveled all the way through it

Space may be curved

The universe is collapsing

8. Which of these is NOT a way to try to measure the size of the universe?

With a spectroscope to analyze the light from distant objects

With a microscope to study these objects

By measuring the speed with which distant galaxies are rushing away from the earth.