Shadows, Seasons and the Phases of the Moon

Front

What is a shadow?

Back

A shadow is a dark area or shape produced by a body coming between rays of light and a surface.

Front

What causes shadows to change in size and shape?

Back

Shadows change in size and shape due to the position of the light source and the object blocking the light.

Front

What is the first quarter moon?

Back

The first quarter moon is the phase of the moon where half of it is illuminated and half is in shadow.

Front

How long does it take for the moon to go through all its phases?

Back

It takes about 28 days for the moon to go through all its phases.

Front

What are the four main seasons?

Back

The four main seasons are spring, summer, autumn (fall), and winter.

Front

What causes the seasons to change?

Back

The tilt of Earth's axis and its revolution around the sun cause the seasons to change.

Front

What is Earth's revolution?

Back

Earth's revolution is the movement of Earth around the sun, which takes about 365 days.

Front

What is the position of the sun at sunset?

Back

At sunset, the sun is positioned in the west.

Front

Where do shadows face at sunset?

Back

At sunset, shadows face east.

Front

What is the difference between rotation and revolution?

Back

Rotation is the spinning of Earth on its axis, while revolution is the orbit of Earth around the sun.