Earth Science Concepts

Front

Axis

Back

The imaginary line through Earth that extends from the North Pole to the South Pole and is the center of Earth's rotation.

Front

Eclipse

Back

An obscuring of the light from a celestial body by the passage of an object between the celestial body and the observer or between the celestial body and its source of illumination.

Front

Lunar Eclipse

Back

When the moon moves into Earth's shadow.

Front

Solar Eclipse

Back

When the Moon's shadow is seen on Earth.

Front

Season

Back

The four natural divisions of the year based on changes in temperature due to varying amounts of sunlight received; caused by the tilt of Earth during its revolution.

Front

Solstice

Back

The Earth's poles are either receiving the most direct or indirect light from the Sun. This marks the start of either the winter or summer season.

Front

equinox

Back

The Earth's poles are receiving almost equal amounts of light from the Sun. This marks the start of either the spring or fall season.

Front

northern hemisphere

Back

The northern half of Earth that is north of the Equator.

Front

southern hemisphere

Back

The Southern half of Earth; that is south of the Equator.

Front

waxing

Back

Moon appears to be getting larger; referring to the phases of the moon.