Earth, Sun, and Moon System vocab.

Front

Imaginary line through Earth from North to South Pole, center of rotation

Back

Axis

Front

A process involving multiple steps that repeats itself.

Back

Cyclic Patterns

Front

Full moon in Earth's shadow appears reddish; lasts 1-3.5 hours.

Back

Lunar Eclipse

Front

Luminous star around which Earth and planets revolve, mainly hydrogen and helium.

Back

Sun

Front

Illuminated shape of the Moon as seen from Earth

Back

Lunar Phase

Front

Obscuring light from a celestial body by an object between it and the observer.

Back

Eclipse

Front

Earth's axis slants 23.5° from vertical, pointing North Pole to North Star.

Back

Tilt

Front

A celestial body of gas held by gravity, generating energy through nuclear reactions.

Back

Star

Front

Curved path of a satellite around an object

Back

Orbit

Front

Four natural divisions of the year based on temperature changes from sunlight variation due to Earth's tilt.

Back

Seasons