Understanding Leap Years

The video explains the necessity of leap days due to the Earth's orbit taking slightly more than 365 days. Without leap days, seasons would shift over time. To correct this, an extra day is added every four years. However, this alone isn't perfect, so century years are only leap years if divisible by 400. This system ensures the calendar remains accurate for thousands of years.

Why is a leap day necessary?

• To adjust for the Earth's orbit being slightly more than 365 days

• To celebrate a special holiday every four years

• To align the calendar with the lunar cycle

• To correct for time lost due to daylight saving

What would happen if we didn't add a leap day every four years?

• The 4th of July would always be in summer

• The Earth would stop revolving around the sun

• The calendar would remain perfectly aligned with the seasons

• The first day of spring would eventually occur in February

How often do we add an extra day to the calendar?

• Every ten years

• Every year

• Every two years

• Every four years

What is the rule for a century year to be a leap year?

• It must be divisible by 100

• It must be divisible by 400

• It must be an even number

• It must be a prime number

Which of the following century years was a leap year?

• 1800

• 1700

• 1900

• 2000

How many hours would we be off in 100 years without adjusting for leap years?

• 36 hours

• 24 hours

• 18 hours

• 12 hours

How long will it take for the current leap year system to be off by one day?

• 1,000 years

• 500 years

• 100 years

• 3,000 years