The Earth's Rotation, Revolution, and Leap Years Explained

The video explains Earth's continuous rotation on its axis and its revolution around the sun at a speed of 109,000 km/h. Despite this speed, it takes Earth 365.25 days to complete one revolution, leading to the addition of an extra day every four years, known as a leap year, to account for the fractional day.

What is the speed of Earth as it moves through space around the sun?

• 90,000 kilometers per hour

• 109,000 kilometers per hour

• 120,000 kilometers per hour

• 100,000 kilometers per hour

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

• 365.25 days

• 364.5 days

• 365 days

• 366 days

Why is there an extra day added every four years?

• To correct the calendar

• To celebrate a special event

• To account for the extra 0.25 days each year

• To align with the lunar cycle

What is the term used for a year with 366 days?

• Lunar year

• Solar year

• Common year

• Leap year

How often does a leap year occur?

• Every 6 years

• Every 5 years

• Every 4 years

• Every 3 years