Khan Academy Seasons

What is a common misconception about the cause of Earth's seasons?

• The Earth's rotation speed changes throughout the year.

• The Earth's distance from the Sun varies significantly, causing temperature changes.

• The Moon's gravitational pull affects Earth's temperature.

• Changes in solar activity cause different seasons.

What is the primary reason Earth experiences seasons?

• The Earth's elliptical orbit around the Sun.

• The Earth's axial tilt relative to its orbital plane.

• Variations in the Sun's energy output.

• The Earth's rotation on its axis.

When is the northern hemisphere most pointed towards the sun?

• June 21st
• December 21st
• September 23rd
• March 21st

When a hemisphere is tilted towards the Sun, what is the effect on sunlight?

• The Sun's rays hit the surface at a more direct angle, concentrating energy.

• The Sun's rays are spread over a larger surface area, reducing heat.

• The Earth is closer to the Sun, increasing overall heat.

• The Earth's rotation slows down, leading to longer days.

Why does a hemisphere experience winter when it is tilted away from the Sun?

• The Earth's orbit takes it further from the Sun during this time.

• The Sun's rays hit the surface at an angle, spreading energy over a larger area.

• The hemisphere receives less total sunlight due to shorter days.

• The Earth's atmosphere becomes thicker, blocking more sunlight.