THE UNIVERSE, STARS, & THE SUN

Front

What type of galaxy is characterized by spiral arms and a central bulge?

Back

Spiral Galaxy

Front

What is the phase in the life cycle of a low mass star where it is stable and fuses hydrogen into helium?

Back

Main Sequence

Front

What are the two primary gases that make up the Sun?

Back

Hydrogen and Helium

Front

What does the color of a star indicate about it?

Back

The temperature of the star

Front

What are the three main types of galaxies?

Back

Spiral Galaxies, Irregular Galaxies, and Elliptical Galaxies

Front

What is a nebula?

Back

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

Front

What is a red giant?

Back

A late stage in the life cycle of a star where it expands and cools after exhausting hydrogen in its core.

Front

What is a white dwarf?

Back

The remnant core of a low mass star that has shed its outer layers, typically very hot and dense.

Front

What is the main sequence in the context of stellar evolution?

Back

The longest phase in a star's life cycle where it fuses hydrogen into helium.

Front

What is the significance of the Hertzsprung-Russell diagram?

Back

It classifies stars based on their luminosity and temperature.