8 Astronomy Chapter 3 Vocab

Front

Asteroid

Back

Rocky objects revolving around the sun that are too small and numerous to be considered planets.

Front

Asteroid belt

Back

Region between Mars and Jupiter with many asteroids.

Front

chromosphere

Back

Middle layer of the sun's atmosphere.

Front

Coma

Back

Fuzzy outer layer of a comet.

Front

Comet:

Back

A collection of ice, dust, and small rocks with a long, narrow orbit.

Front

Convection zone

Back

Outermost layer of the sun's interior.

Front

Core of the sun

Back

Central region of the sun where nuclear fusion occurs.

Front

corona

Back

Outer layer of the sun's atmosphere.

Front

Ellipse

Back

Oval shape; planets' orbits.

Front

Extraterrestrial life

Back

Life that exists other than that on Earth.