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Published byAlisha Watkins
Modified over 6 years ago
1 Spring Equinox 2 March 20 or 21 3 Equal amount of daylight & night time hours 4 ~ 12 hours of daylight and night time
Spring Daylight hours increasing
1 Summer Solstice 2 June 20 or 21 3 Longest amount of daylight hours 4 ~ 14 hours of daylight
Summer Daylight hours decreasing
1 Fall Equinox 2 September 21 or 22 3equal amount of daylight and night time hours 4 ~ 12 hours of daylight and night time hours
12341234 12341234 Fall Daylight hours decreasing
1 Winter Solstice 2 Dec 20 or 21 3 shortest amount of daylight hours 4. ~ 9 to 10 hours of daylight hours
Winter Daylight hours increasing
Remember…Earth’s orbit is… Earth’s orbit around the sun is nearly circular, but not a perfect circle! Earth’s orbit is an ellipse.
When are we closest to the sun? Perihelion: occurs 2 weeks after… THE WINTER SOLSTICE January 4 th (this year)
When are we farthest from the sun? Aphelion: occurs 2 weeks after… THE SUMMER SOLSTICE July 6 th (this year)
IT IS NOT THE DISTANCE THAT WE ARE FROM THE SUN THAT DETERMINES THE SEASONS! Then what is it?
The Earth’s Revolution
The ReasonS for the Seasons Lesson 4. In which direction does Earth’s axis point as it revolves around the Sun?
Seasons What do your students think causes the seasons? By the Lunar and Planetary Institute For use in teacher workshops.
Days, Years & Seasons. Days and Nights Rotation: the Earth turns around on its axis 1 day=24 hours (one rotation) One half of the Earth is always in light.
The Seasons A Northern Hemisphere Perspective. The Seasons Definitions Axis: An imaginary axle that passes through the North and South Poles Rotation.
Why do we have day and night?. Earth’s rotation The Earth rotates on its axis (imaginary vertical line around which Earth spins) every 23 hours & 56.
Seasons on Earth Two reasons the Earth has seasons: 23.5 degree tilt
658 – 665 Section 1. * Definition: Study of the moon, stars and space * Why would it be beneficial to study Astronomy? * Develop a calendar * Agriculture.
How does the Earth move in space? What causes the cycle of the seasons on Earth?
How do they work together to help life survive? Seasons
Vernal Equinox, the First Day of Spring By Dr. Harold Williams of Montgomery College Planetarium
Seasons Patterns of temperature changes and other weather trends over the course of a year are known as seasons. Spring Vernal Equinox March 20,21 Which.
Why do we have seasons? Fold your paper into a Frayer model: 4 equal rectangles.
Grade 8. Parallax Perihelion Aphelion Seasons Summer Solstice Tropic of Cancer Winter Solstice Tropic of Capricorn Vernal Equinox
Why do we have seasons?. Earth’s rotation The Earth rotates on its axis (imaginary vertical line around which Earth spins) every 23 hours & 56 minutes.The.
Chapter 19.1 Earth in Space p The Past: At one time people thought the Earth was the center of the universe. They believed Earth stood still.
Why are There Seasons?.
Why do we have seasons?.
Why do we have seasons?
The ReasonS for the Seasons
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