Stars and Galaxies Review

Front

What type of star has a low temperature and a high luminosity?

Back

Red Supergiants are stars that have a low surface temperature but are very luminous due to their large size.

Front

What does redshift in galaxies indicate?

Back

Redshift indicates that galaxies are moving away from Earth, supporting the theory of the expansion of the universe.

Front

Which star is brighter than the sun?

Back

Aldebaran is a star that is brighter than the sun.

Front

What is the surface temperature comparison between White Dwarf stars and Red Supergiants?

Back

White Dwarf stars have a higher surface temperature than Red Supergiants.

Front

What is a collection of stars, dust, and gas bound together by gravity called?

Back

A Galaxy is a collection of stars, dust, and gas bound together by gravity.

Front

What is the main evidence supporting the Big Bang theory?

Back

Cosmic background radiation is the main evidence supporting the Big Bang theory.

Front

What is the difference between blueshift and redshift?

Back

Blueshift indicates that an object is moving towards the observer, while redshift indicates it is moving away.

Front

What is a White Dwarf?

Back

A White Dwarf is a small, dense star that is the remnant of a star that has exhausted its nuclear fuel.

Front

What is a Blue Giant?

Back

A Blue Giant is a very hot and luminous star that is much larger than the sun.

Front

What is the significance of the Cosmic Microwave Background Radiation?

Back

The Cosmic Microwave Background Radiation is the afterglow of the Big Bang and provides evidence for the universe's early state.