Unit 1 Test: Big Bang, Stars, Atoms, and Elements

Front

What element is created when hydrogen is fused together on the Sun?

Back

Helium

Front

What does the letter 'C' represent in chemistry?

Back

Chemical symbol

Front

What is the energy source of all suns and stars?

Back

Nuclear fusion

Front

What is the total number of protons and neutrons in an atom called?

Back

Mass number

Front

What does a low mass star become after the main sequence?

Back

Red giant

Front

What is the process called when two light atomic nuclei combine to form a heavier nucleus?

Back

Nuclear fusion

Front

What is the primary element in stars that undergoes fusion?

Back

Hydrogen

Front

What is the term for the number of protons in the nucleus of an atom?

Back

Atomic number

Front

What is the main sequence in stellar evolution?

Back

A phase where stars fuse hydrogen into helium in their cores.

Front

What happens to a star after it exhausts its hydrogen fuel?

Back

It expands into a red giant.