Ch 7. Earth in Space

Front

Annular solar eclipse

Back

Occurs when the Moon moves between the Sun and Earth.

Front

Axis

Back

An imaginary line from the North Pole to the South Pole that the Earth spins on.

Front

Elliptical

Back

An oval or egg shape; the shape of Earth’s orbit around the Sun.

Front

Equinox

Back

Days with the same number of daylight hours as night hours.

Front

Full moon

Back

The view of the Moon seen from Earth when the whole of its near side is in sunlight.

Front

Gravitational force

Back

An attractive force between two objects that have mass.

Front

Lunar eclipse

Back

Occurs when Earth moves between the Sun and the Moon so that some or all of the Moon’s surface does not receive light from the Sun and cannot be seen.

Front

Lunar month

Back

The time period between the appearance of one new moon to the next, which equates to 29.5 days.

Front

Neap tide

Back

A weaker high and low tide that occurs when the Sun and the Moon are not in the same line as Earth.

Front

Orbit

Back

The curved path of a celestial object or spacecraft about a star or planet; for example, the path of Earth around the Sun or the Moon around Earth.