Unit Eight - Climate - Seasons

Question 1

What are the two reasons why seasons exist?

Answer 1

1. Earth rotates on a tilted axis
2. It revolves around the sun

Question 2

How does the tilted axis affect seasons?

Answer 2

North & South hemispheres to receive different angles of insolation (incoming solar radiation).

Question 3

Info on Spring (4)

Answer 3

1. Vernal Equinox
2. March 21st
3. Direct insolation (sunlight overhead) occurs at the equator
4. 12 hrs/day and 12 hours/night

Question 4

Info on Summer (5)

Answer 4

1. Summer Solstice
2. June 21st
3. Direct insolation (sunlight overhead) occurs at 23.5 N Latitude
4. Longest Day of Year
5. Northern Hemisphere is tilted towards the Sun

Question 5

Info on Fall (4)

Answer 5

1. Autumnal Equinox
2. September 21st
3. Direct Insolation (sunlight overhead) occurs at the equator
4. 12 hrs/day and 12 hrs/night

Question 6

Info on Winter (5)

Answer 6

1. WInter Solstice
2. December 21st
3. Direct Insolation (sunlight overhead) occurs at 23.5 S Latitude
4. Shortest Day of Year
5. Northern Hemisphere is tilted away from the sun