Earth's Rotation, Revolution, and the Seasons Explained

The video explains Earth's rotation on its axis and its elliptical orbit around the sun, taking 24 hours and 365.25 days respectively. It discusses perihelion and aphelion, the closest and furthest points from the sun, and how Earth's axis tilt, not proximity to the sun, causes seasons. The tilt results in varying day lengths and solar angles, affecting light intensity and heat distribution. The video also covers how Earth's atmosphere influences radiation reaching the surface, with small angle rays passing through more atmosphere and losing energy.

What is the term for the imaginary line on which Earth rotates?

• Axis

• Equator

• Meridian

• Orbit

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

• 12 months

• 365.25 days

• 24 hours

• 30 days

What causes the different seasons on Earth?

• Shape of Earth's orbit

• Tilt of Earth's axis

• Earth's rotation speed

• Distance from the sun

During which event is the North Pole leaning away from the sun?

• Perihelion

• Equinox

• Winter solstice

• Summer solstice

How does the angle of the sun's rays affect the intensity of light on Earth's surface?

• Higher angles decrease intensity

• Lower angles increase intensity

• Higher angles increase intensity

• Angle has no effect

What happens to light rays striking Earth's surface at a small angle?

• They pass through less atmosphere

• They pass through more atmosphere

• They are absorbed completely

• They reflect back into space

Why do locations near the equator experience high light intensity?

• Sun is always at a low angle

• Sun is always at a high angle

• Sunlight is scattered more

• Sunlight is absorbed more

What is the effect of Earth's atmosphere on solar radiation at small angles?

• Energy is amplified

• More energy reaches the surface

• Less energy reaches the surface

• Energy is unaffected

What phenomenon occurs at the Arctic Circle during the summer solstice?

• 24 hours of darkness

• Equal day and night

• Continuous twilight

• 24 hours of daylight

How long does a day last at the North Pole?

• 6 months

• 1 year

• 24 hours

• 12 hours