Unit 3 Exam

If an object emitting light waves is moving AWAY from the observer, what happens to the waves?

• The waves get "bunched up" - closer together (or at a higher frequency) like on the right side of the image.

• The waves get "spread out" - further apart from each other (or at a lower frequency) like on the left side of the image.

• The waves go up and down in a cyclic order.

Scientists infer that the Big Bang occurred approximately...

• 4.6 billion years ago

• 7 billion years ago

• 9 billion years ago

• 13.8 billion years ago

Click all of the types of telescopes used for studying astronomy.

• radio telescope

• compound telescope

• space telescope

• refracting telescope

Our universe is:

• None of these answers is correct

• We don't know if it's changing or staying the same size

• Staying the same size

• Shrinking

• Expanding

What are two pieces of evidence that support the Big Bang Theory?

• red shift of light and cosmic background radiation

• red shift of light and the different shapes of galaxies

• planetary motion and cosmic background radiation

• planetary motion and the different shapes of galaxies

A white dwarf is the end of life for what type of star?

• Low Mass Star

• Neutron Star

• High Mass Star

• Black Hole

After a supernova, what are two possible outcomes?

• Black hole or Neutron star

• Planet or Neutron star

• Black hole or Dust

• White dwarf or Black dwarf

What force pulled together hot, dense areas of matter to begin the process of star formation?

• animal magnetism

• gravity

• pressure

• heat

What color is the star Spica?

Use the Characteristics of Stars chart to answer.

• Blue

• White

• Yellow

• Red

On what life cycle stage is the star Pollux?

Use the Characteristics of Stars chart to answer.

• Main Sequence

• Giant

• Supergiant

• White Dwarf