Unit 6 Vocab

Front

What is the HR Diagram?

Back

A diagram that shows the relationship between the brightness, surface temperature, and color of stars.

Front

What is Apparent Magnitude?

Back

A measure of how bright a star appears as seen from Earth.

Front

What is Absolute Magnitude?

Back

A measure of how bright a star really is, if all stars were the same distance from Earth.

Front

What is a Galaxy?

Back

A system of stars and associated matter, held together by gravitational attraction.

Front

What is the Milky Way Galaxy?

Back

The galaxy that contains our Sun and its solar system, including Earth.

Front

What is Luminosity?

Back

The total amount of energy emitted by a star per unit time, often measured in watts.

Front

What are Spectra?

Back

The range of different colors of light emitted or absorbed by stars, used to determine their composition and temperature.

Front

What is a Nebula?

Back

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

Front

What is a Star?

Back

A massive, luminous sphere of plasma held together by gravity, undergoing nuclear fusion.

Front

What is a Supernova?

Back

A powerful and luminous explosion of a star, marking the end of its life cycle.