Earth's Motion and Seasons

Front

What is the spinning of Earth on its axis in a day called?

Back

Rotation

Front

What is the yearlong movement of Earth around the sun called?

Back

Revolution

Front

What is a constellation?

Back

A group of stars.

Front

What is the duration of insolation?

Back

The length of time sunlight is received at a location in a day, or the amount of time between sunrise and sunset.

Front

What is the angle at which the sun's rays hit Earth's surface called?

Back

Angle of Incidence.

Front

What is perihelion?

Back

The point in Earth's orbit when it is closest to the sun.

Front

What is aphelion?

Back

The point in Earth's orbit when it is farthest from the sun.

Front

What are solstices?

Back

The two times in the year when the sun reaches its highest or lowest point in the sky at noon, marking the longest and shortest days.

Front

What is the significance of the equinox?

Back

The two times in the year when day and night are of approximately equal length.

Front

What causes the seasons on Earth?

Back

The tilt of Earth's axis and its revolution around the sun.