Sun, Earth, Moon Interaction

Front

What is the gravitational pull of the sun and moon on Earth called?

Back

Tidal force.

Front

What is the equation that represents the effect of the sun and moon on spring tides?

Back

sun + moon = spring tides.

Front

What are spring tides?

Back

Spring tides are the highest and lowest tides that occur when the sun and moon are aligned with Earth.

Front

What positions of the Earth, sun, and moon create spring tides?

Back

When the sun and moon are in line with Earth.

Front

What is an equinox?

Back

An equinox is a time when day and night are of approximately equal length, occurring twice a year.

Front

Which positions of the Earth and sun represent an equinox?

Back

Position A and Position C.

Front

What is the movement of Earth around the sun called?

Back

Revolution.

Front

What is the movement of Earth on its axis called?

Back

Rotation.

Front

What is the imaginary line running through the center of Earth called?

Back

Axis.

Front

What is the major cause of seasonal changes on Earth?

Back

Tilt of Earth's axis.