8th Unit 5 Test Review

Front

What determines a star's life cycle?

Back

A star's life cycle depends on its size.

Front

What are stars mostly made of?

Back

Stars are mostly made of hydrogen and helium.

Front

What is a neutron star?

Back

A neutron star is a dense remnant formed from the collapse of a massive star after a supernova.

Front

How are stars classified?

Back

Stars are classified by temperature, luminosity, and size.

Front

What are the three main types of galaxies?

Back

The three main types of galaxies are Spiral, Elliptical, and Irregular.

Front

What is the main factor that affects a star's brightness?

Back

A star's brightness is affected by its temperature and distance from Earth.

Front

What is a supernova?

Back

A supernova is a powerful explosion that occurs when a star exhausts its nuclear fuel.

Front

What is the difference between a white dwarf and a neutron star?

Back

A white dwarf is the remnant of a low to medium mass star, while a neutron star is the remnant of a massive star after a supernova.

Front

What is luminosity?

Back

Luminosity is the total amount of energy emitted by a star per unit of time.

Front

What is the life cycle of a massive star?

Back

The life cycle of a massive star includes stages such as main sequence, red supergiant, supernova, and neutron star or black hole.