Unit 1 Vocab

Front

An imaginary line that an object spins around.

Back

Axis

Front

The outer layer of the sun's atmosphere, visible during a solar eclipse.

Back

Corona (sun)

Front

A celestial body made of ice and dust that orbits the sun.

Back

Comet

Front

A celestial body that orbits the sun, made of rock and metal.

Back

Asteroid

Front

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

Back

Galaxy

Front

A phase of the moon when it appears more than half illuminated.

Back

Gibbous

Front

The invisible line that circles the middle of the Earth, separating it into the northern and southern hemispheres.

Back

Equator

Front

The phenomenon when one celestial body moves into the shadow of another.

Back

Eclipse

Front

An invisible force that pulls objects toward each other.

Back

Gravity

Front

The act of drawing conclusions based on observations.

Back

Infer