8.7 A. Earth's rotation and revolution.

Front

What causes Earth to have seasons?

Back

Earth has seasons because it is tilted on its axis as it revolves around the Sun.

Front

What is the equator?

Back

The equator is an imaginary line that divides the Earth into the Northern and Southern Hemispheres, experiencing the least change in daylight hours throughout the year.

Front

How long does it take for Earth to complete one revolution around the Sun?

Back

It takes Earth approximately 12 months to complete one revolution around the Sun.

Front

What is the winter solstice?

Back

The winter solstice is the time during Earth's revolution when the Northern Hemisphere is tilted away from the Sun, resulting in the shortest day of the year.

Front

What is Earth's rotation?

Back

Earth's rotation is the spinning of the planet on its axis, which takes about 24 hours to complete one full turn.

Front

What is the significance of the Tropic of Cancer?

Back

The Tropic of Cancer is the northernmost point where the Sun can be directly overhead, marking the start of summer in the Northern Hemisphere.

Front

What happens at the vernal equinox?

Back

At the vernal equinox, day and night are approximately equal in length, marking the start of spring in the Northern Hemisphere.

Front

What is the difference between rotation and revolution?

Back

Rotation refers to Earth spinning on its axis, while revolution refers to Earth orbiting around the Sun.

Front

What is the effect of Earth's tilt on climate?

Back

Earth's tilt affects the angle of sunlight received, leading to variations in temperature and climate, which contribute to the seasons.

Front

What is the significance of the North Pole?

Back

The North Pole experiences extreme variations in daylight hours, with continuous daylight in summer and continuous darkness in winter.