Celestial Motion and Seasonal Changes Explained

The video explains Earth's position in the solar system, its orbit around the sun, and its rotation on an axis, which causes the day-night cycle. It also discusses how Earth's tilted axis leads to seasonal changes, with the northern and southern hemispheres experiencing opposite seasons.

What is the duration of one complete revolution of Earth around the sun?

• 365 days

• 12 months

• 30 days

• 24 hours

What is the imaginary line called that Earth spins around?

• Axis

• Meridian

• Orbit

• Equator

How long does it take for Earth to complete one full rotation?

• 72 hours

• 48 hours

• 24 hours

• 12 hours

What causes the change in seasons on Earth?

• Earth's gravitational pull

• Earth's distance from the sun

• Earth's rotation speed

• Earth's axis tilt

When the northern hemisphere is tilted towards the sun, what season does it experience?

• Summer

• Autumn

• Spring

• Winter

What season is it in the southern hemisphere when it is summer in the northern hemisphere?

• Winter

• Summer

• Spring

• Autumn

What happens when Earth is between the two extreme positions of its tilt?

• It is always summer

• It is always winter

• It is either spring or autumn

• It is always night

Why does the northern hemisphere experience winter when it is tilted away from the sun?

• The northern hemisphere is closer to the sun

• Less energy from the sun hits the northern hemisphere

• More energy from the sun hits the northern hemisphere

• The northern hemisphere is further from the sun