Topic 4 DCA Review

Front

What forms when a supergiant explodes?

Back

A neutron star.

Front

What are the two most abundant elements in a main sequence star?

Back

Hydrogen and helium.

Front

What is cosmic microwave background radiation?

Back

Waves transporting energy left over from the Big Bang.

Front

What is the expansion of the universe?

Back

The increase in the distance between galaxies over time.

Front

Which color are the hottest stars?

Back

Blue.

Front

What is a supergiant star?

Back

A massive star that has expanded and cooled, often leading to a supernova.

Front

What is a black hole?

Back

A region in space where the gravitational pull is so strong that nothing, not even light, can escape.

Front

What is a white dwarf?

Back

A small, dense star that is the remnant of a low or medium mass star after it has exhausted its nuclear fuel.

Front

What is a red giant?

Back

A large star that has expanded and cooled, typically found in the later stages of stellar evolution.

Front

What is nuclear fusion?

Back

The process by which two light atomic nuclei combine to form a heavier nucleus, releasing energy.