Unit 4 Pretest: The Universe

Front

What was the state of matter before the 'Big Bang'?

Back

The matter that makes up the universe was packed tightly together.

Front

What type of galaxy is considered the youngest?

Back

Spiral galaxies are considered the youngest.

Front

What determines the life cycle of a star?

Back

The quantity of mass of the star determines its life cycle.

Front

Which type of galaxy has a 'halo' on its outer edge?

Back

Spiral galaxies contain a 'halo' on the outer edge.

Front

What happens to a star after the Red Supergiant phase?

Back

After the Red Supergiant phase, a star undergoes a Supernova and can become a black hole or neutron star.

Front

Define a galaxy.

Back

A galaxy is a massive system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.

Front

What is a spiral galaxy?

Back

A spiral galaxy is a type of galaxy characterized by its spiral arms and a central bulge.

Front

What is a black hole?

Back

A black hole is a region of space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion that occurs at the end of a star's life cycle.

Front

What is the difference between a neutron star and a black hole?

Back

A neutron star is the remnant of a supernova explosion, while a black hole is formed when a massive star collapses under its own gravity.