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Mechanism of The Seasons

Mechanism of The Seasons

How Equinox's Work - Beyond Our Earth Earth's Tilt and the Seasons - for Planetarium Show The Four Seasons Purpose To understand that it is the tilt of earth’s axis that causes the seasons. Context From their earth studies in grades 3 through 5, students have learned about earth itself and earth in relation to the sun. Students should understand that earth is on an axis and rotates (resulting in night and day) and that earth takes about a year to orbit the sun. More specifically, students should “reasonably understand the relative size, motion, and distance of the sun, moon and the earth,” or they will face a great challenge in understanding the phenomena of seasons. There is a common misconception (not mentioned in Benchmarks) of people of all ages regarding the seasons, and that is the notion that earth heats up because it is nearer to the sun. Planning Ahead You will need materials to demonstrate earth orbiting the sun. Motivation The following questions will help you ascertain what your students think about how the seasons occur. What are our seasons like? Development Ask students: Assessment

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