Unit 2.3 VOCAB REVIEW - Stars, Galaxies, Universe

Front

Theory that the universe began from one point and has been expanding and cooling:

Back

Big Bang Theory

Front

Not a type of galaxy:

Back

Triangular

Front

Color of a star depends on its:

Back

temperature

Front

Color of hottest stars?

Back

blue

Front

Huge group of solar systems, stars, dust, and gas held by gravity?

Back

galaxy

Front

Light year measures:

Back

Distance

Front

A large gas sphere generating energy and emitting light, heat, and radiation is a _____________.

Back

star

Front

Distance light travels in a year?

Back

light year

Front

The Milky Way is a...

Back

spiral galaxy

Front

Space, matter, and energy in existence.

Back

universe