The Calendar, Australia & White Christmas

The video explains why Earth experiences seasons due to its axial tilt and how this affects sunlight distribution across hemispheres. It delves into Earth's gyroscopic motion and precession, which influence the timing of equinoxes and solstices. The Gregorian calendar's alignment with the solar year is discussed, including leap year rules that help maintain synchronization with the seasons. Long-term effects on the calendar and potential future changes are also explored, considering Earth's orbital dynamics and interactions with the moon.

What causes the Earth to have different seasons?

• The distance from the sun

• The tilt of Earth's axis

• The speed of Earth's rotation

• The shape of Earth's orbit

What is the precession of the equinoxes?

• The shift in Earth's orbit shape

• The change in Earth's distance from the sun

• The wobble in Earth's rotational axis

• The variation in Earth's axial tilt

How does the Gregorian calendar stay aligned with the seasons?

• By adjusting for Earth's orbit every 4 years

• By adding a day every 100 years

• By aligning with the lunar cycle

• By skipping leap years in certain centuries

What is the purpose of leap years in the Gregorian calendar?

• To correct for Earth's axial tilt

• To align with the lunar cycle

• To adjust for the precession of the equinoxes

• To compensate for the extra hours in a solar year

How often does the Gregorian calendar skip a leap year?

• Every 300 years

• Every 200 years

• Every 400 years

• Every 100 years

What long-term effect could change the timing of seasons?

• The precession of Earth's orbit

• The decrease in Earth's axial tilt

• The increase in Earth's rotation speed

• The lengthening of the solar day

How might Earth's orbit affect the calendar in the distant future?

• By making the year shorter

• By causing a 6-month shift in seasons

• By eliminating the need for leap years

• By aligning the calendar with the lunar cycle