Day & Night, Shadows, & Seasons

Front

What causes day and night?

Back

Day and night are caused by the rotation of the Earth on its axis. When one side of the Earth faces the Sun, it experiences daytime, while the opposite side experiences nighttime.

Front

What is the definition of rotation?

Back

Rotation is the spinning of the Earth on its axis, which takes approximately 24 hours to complete.

Front

What is a revolution?

Back

A revolution is the movement of the Earth around the Sun, which takes about 365 days to complete.

Front

How long does it take for the Earth to rotate once?

Back

It takes approximately 24 hours for the Earth to complete one full rotation.

Front

What are the four seasons?

Back

The four seasons are spring, summer, autumn (fall), and winter, which are caused by the tilt of the Earth's axis and its revolution around the Sun.

Front

What is a shadow?

Back

A shadow is created when an object blocks light from a light source, such as the Sun.

Front

How do shadows change throughout the day?

Back

Shadows change in length and direction as the Sun moves across the sky due to the Earth's rotation.

Front

What is the position of the Sun at sunrise?

Back

At sunrise, the Sun is positioned on the eastern horizon.

Front

What is the position of the Sun at sunset?

Back

At sunset, the Sun is positioned on the western horizon.

Front

Why do we have seasons?

Back

Seasons occur due to the tilt of the Earth's axis and its orbit around the Sun, causing different parts of the Earth to receive varying amounts of sunlight throughout the year.