Earth’s Orbit & Rotation

Front

What causes the sun to appear to move across the sky during the day?

Back

The rotation of Earth on its axis.

Front

At what time of day are shadows typically the shortest?

Back

Noon.

Front

What is the purpose of a Foucault pendulum?

Back

To provide evidence for the rotation of Earth on its axis.

Front

What is stellar parallax?

Back

The apparent shift in position of a star due to the Earth's orbit around the sun, providing evidence against the geocentric model.

Front

How long does it take for the Earth to complete one orbit around the sun?

Back

365.25 days.

Front

What is the tilt of Earth's axis and how does it affect seasons?

Back

Earth's axis is tilted at approximately 23.5 degrees, causing seasonal variations in sunlight.

Front

What is the difference between rotation and revolution?

Back

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

Front

What is the significance of the equinoxes?

Back

Equinoxes occur when day and night are approximately equal in length, marking the change of seasons.

Front

What is the role of gravity in Earth's orbit around the sun?

Back

Gravity from the sun keeps Earth in its elliptical orbit.

Front

How does the Earth's rotation affect time zones?

Back

The rotation of Earth creates different time zones as different areas receive sunlight at different times.