Universe Check 4

Front

Why do most bright stars observed at night appear brighter than other stars?

Back

They are closer to Earth.

Front

What is one of the factors used to describe stars?

Back

Size.

Front

What type of star is a pulsar?

Back

A neutron star.

Front

How does the size of stars vary?

Back

Stars vary greatly in size.

Front

What color are the coolest stars on the H-R diagram?

Back

Red.

Front

What is a star?

Back

A massive, luminous sphere of plasma held together by gravity.

Front

What is the H-R diagram?

Back

A graph that plots stars according to their brightness and temperature.

Front

What is a neutron star?

Back

A type of stellar remnant that is incredibly dense and composed mostly of neutrons.

Front

What is a white dwarf?

Back

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

Front

What is a red giant?

Back

A large, luminous star in the late stages of stellar evolution, characterized by a red color.