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# Science_Lab_Yellow / Lesson 2: Rotation and Different Seasons

 Rotation and Seasons What will we be learning today? In this lesson, we are going to learn all about rotation of the Earth and why we have different seasons. We will begin today's lesson, by why the Earth rotates.

 Rotation How can it be afternoon in Ohio but the middle of the night in Asia? The answer is that the Earth moves The Earth moves around the Sun As the Earth moves around the Sun, it spins or rotates It is Earth's rotation that causes day and night The rotation of Earth changes day into night and night into day One complete rotation on the Earth's axis takes 24 hours, or one whole day

 Axis You can't feel Earth's rotation, but standing on Earth is like riding a giant top The imaginary line drawn from the North Pole to the South Pole is the Earth's axis An axis is a real or imaginary line that a spinning object turns around As Earth rotates, it turns about its axis just like a top spins around its axis However, the Earth's axis is tilted Earth is tipped at an angle

 Seasons Seasons change by the average temperatures that rise and fall because of where the Earth is      located to the Sun Revolution is one complete trip around the Sun which takes 365 days = one year Parts of Earth are closer to the Sun during part of the year and farther away during the other part      of the year, which causes the different seasons The closer a place is to the equator, the less change in temperatures from season to season      because the sun hits the equator the same year round

 Seasons are opposite of each other for the Northern and Southern Hemispheres If you live in the Northern Hemisphere and are having summer, then in the Southern     Hemisphere you are having winter The 4 Seasons are:1. Winter 2. Spring 3. Summer 4. Fall

 Let's Review What We Learned Today! Earth's rotation on its axis and going around the Sun causes the cycle of day and night, and the     four seasons One day on Earth is the time needed for one rotation - 24 hours The Earth does this rotation 365 times each year = 365 days in a year The Earth revolves around the Sun which causes the different seasons The closer to the Sun the warmer (Summer) and the further from the sun the colder (Winter)

 It takes one whole year for Earth to move around the Sun = 365 days