Unit 1 Space Vocabulary

Front

Electromagnetic Spectrum

Back

All of the different wavelengths of light.

Front

Galaxy

Back

A system of stars, dust, and gas held together by gravity

Front

Gravity

Back

The attractive force, or pull, between objects that have mass

Front

H-R Diagram

Back

Chart that plots stars based on temperature and luminosity

Front

Luminosity

Back

Measure of the brightness of stars

Front

Main Sequence Star

Back

Where a star spends most of its life (our sun)

Front

Nebula

Back

Cloud of gas and dust where stars are born

Front

Nuclear Fusion

Back

Where hydrogen atoms combine to form helium (energy given off)

Front

Star

Back

A giant ball of burning gases that gives off light and heat energy

Front

Universe

Back

All of outer space and the matter and objects within it