Galaxies, Life Cycle of Stars, H-R Diagrams

Front

What are the main components found in galaxies?

Back

Dust, gas, and stars.

Front

What type of galaxy is characterized by spiral arms?

Back

Spiral galaxy.

Front

What is the stable and longest lasting period of a star’s life cycle called?

Back

Main Sequence.

Front

What event marks the beginning of our known universe?

Back

Big Bang Theory.

Front

What is the correct order of stars from hottest to coolest?

Back

Blue, yellow, orange, red.

Front

What is a galaxy?

Back

A massive system that contains stars, gas, dust, and dark matter, bound together by gravity.

Front

What is the life cycle of a star?

Back

The series of stages a star goes through from formation to its end, including nebula, main sequence, red giant, and supernova.

Front

What is an H-R Diagram?

Back

A graph that plots stars according to their brightness and temperature, used to understand stellar evolution.

Front

What is a nebula?

Back

A giant cloud of dust and gas in space, often the birthplace of stars.

Front

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

Back

It can become a red giant, supernova, neutron star, or black hole, depending on its mass.