HR diagrams, Star LifeCycle, & Galaxies

Front

What are the primary gases found in stars?

Back

Hydrogen & Helium

Front

What determines the life cycle of a star?

Back

Mass

Front

True or False: All stars are the same color and same size.

Back

False

Front

What causes the different colors of stars?

Back

Surface temperature

Front

True or False: Real stars have five points.

Back

False

Front

What is an HR diagram?

Back

A graph that plots stars' brightness against their temperature.

Front

What is the main sequence in the context of stars?

Back

A continuous and distinctive band of stars that appears on plots of stellar color versus brightness.

Front

What is a galaxy?

Back

A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter.

Front

What are the two main types of galaxies?

Back

Spiral galaxies and elliptical galaxies.

Front

What is a supernova?

Back

A powerful and luminous explosion of a star.