Earth's Rotation and Revolution Concepts

The video explains the motions of the Earth, focusing on rotation and revolution. Rotation occurs around an imaginary axis, causing day and night, while revolution around the Sun leads to seasonal changes. The Earth's axis is tilted, affecting sunlight distribution and resulting in different seasons in the northern and southern hemispheres. The video also discusses historical beliefs about Earth's position in the universe and concludes with a recap of the key concepts.

What is the imaginary line called along which the Earth spins?

• Axis

• Orbit

• Equator

• Meridian

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

• 48 hours

• 72 hours

• 24 hours

• 12 hours

What causes the formation of day and night on Earth?

• Earth's revolution

• Earth's rotation

• Sun's movement

• Moon's phases

At what speed does the Earth revolve around the Sun?

• 40 km/s

• 30 km/s

• 20 km/s

• 10 km/s

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

• 364 days

• 366 days

• 365 days

• 367 days

What is added every four years to account for the extra 6 hours per year?

• An hour

• A month

• A day

• A week

What causes the change in seasons on Earth?

• Earth's revolution and tilt

• Sun's rotation

• Earth's rotation

• Moon's orbit

When it is summer in the Northern Hemisphere, what season is it in the Southern Hemisphere?

• Summer

• Autumn

• Spring

• Winter

Which hemisphere receives direct rays from the Sun from April to June?

• Northern Hemisphere

• Southern Hemisphere

• Western Hemisphere

• Eastern Hemisphere

What is the primary cause of day and night on Earth?

• Earth's revolution

• Earth's rotation

• Moon's phases

• Sun's movement