Do Now In your notebook, answer the following question in complete sentences: What causes the seasons?

Do NowIn your notebook, answer the following

question in complete sentences:

What causes the seasons?

Why do we have seasons?

Seasons

Rotation vs. Revolution

• Rotation – The Earth spinning on its axis (Causes night and

day)– 1 rotation = 1 day (24 Hours)

• Revolution – The Earth orbiting around the sun – 1 revolution = 1 year (365 Days)

Why do we have seasons?NOT because we are

closer or further from the sun

Earth tilts on its axis 23.5 degrees and creates our seasons

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Location 1Summer Solstice

June 20th/21st

Longest Daylight Hours of yearSun Directly Overhead at 23.5 N (Tropic of

Cancer)North Pole receives 24 hours of sunlight

Alaska – 24 hours of sunlight!

Midnight Baseball

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Location 3Autumnal Equinox

September 22nd/23rd Equal Daylight Hours and Nighttime HoursSun Directly Overhead at Equator

Easy way to remember: EQUAL, EQUATOR, EQUINOX

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Location 5Winter Solstice

December 21st /22nd Shortest Daylight HoursSun Directly Overhead at 23.5 S (Tropic of

Capricorn)North Pole receives 24 hours of darkness

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Location 7Vernal Equinox

March 20th/ 21st

Equal Daylight Hours and Nighttime HoursSun Directly Overhead at Equator

Easy way to remember: EQUAL, EQUATOR, EQUINOX

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2Summer Autumn

WinterSpring

What do 2,4,6, and 8 represent?

2 – Summer (Daylight Hours Decreasing)

4 – Autumn (Daylight Hours Decreasing)

6 – Winter (Daylight Hours Increasing)

8 – Spring (Daylight Hours Increasing)

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Southern HemisphereSeasons are OPPOSITE in the Southern

Hemisphere

Q: If I want to go skiing in June, where should I go??

A: Southern Hemisphere!

In your NB’s Answer the following:Southern Hemisphere:

Solstice / EquinoxDateDay light hoursWhere is the sun overheadSouth Pole (if anything)

Location 1:Winter SolsticeJune Short Daylight hoursSouth Pole 24hrs

DarkSun at 23.5 North

Location 5:Summer SolsticeDecemberLong Daylight hoursSouth Pole 24hrs

LightSun at 23.5 South

Location 3:Vernal EquinoxSeptemberEqual Daylight hoursSun at Equator Location 7:

Autumnal EquinoxMarchEqual Daylight hoursSun at Equator