Autumnal equinox explained: Fall begins with the arrival of the autumnal equinox

The video explains how Earth's 23.5-degree tilt affects the seasons, with the northern hemisphere tilting away from the sun in winter and towards it in summer. It also covers the concept of equinoxes, where day and night are equal, occurring twice a year. The vernal equinox marks spring, and the autumnal equinox marks fall. The autumnal equinox typically occurs around September 22nd to 24th, with a specific example from 2015.

What is the angle of Earth's tilt that affects the seasons?

• 45 degrees

• 23.5 degrees

• 15 degrees

• 30 degrees

During which event are day and night times equal?

• Eclipse

• Full Moon

• Equinox

• Solstice

What does the term 'equinox' mean?

• Equal day

• Equal night

• Equal distance

• Equal temperature

When does the autumnal equinox usually occur?

• August 21st

• September 22nd, 23rd, or 24th

• October 1st

• November 15th

In which season does the vernal equinox occur?

• Summer

• Spring

• Winter

• Fall