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Ch. 6 Earth's Rotation Video

Added Nov 03, 2015 •

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you seen the sunset right and if you get up early enough maybe you seen it rise too but have you ever wondered if the sun rises every day and sets every night where does it go when we 6  well know where it's actually us that goes somewhere because we're on the earth and our planet as turning or spinning on its axis passing through the center of the earth that goes both through the North Pole and the South Pole we call that invisible line the axis what spins around on this axis like a top this spinning movement is called the Earth's rotation and the Earth's rotation is what gives us day and night every day all year side of the earth that's facing away from the Sun as the Earth is spinning its night if you're on the side facing the sun it's you guessed it day now hold on tight because the Earth actually moving in more ways than one at the same time that the Earth spins on its axis it also Orbitz or revolves around the Sun this movement is called its revolution wonderful orbit all the way around the Sun is one Revolution and the Earth takes 365 days or 1 year to complete a revolution so have you got all of this so far the Earth rotating on its axis creating day and night and the same time its revolving all the way around the Sun now here's the thing as the Earth is both rotating and revolving it's not sitting straight up and down its axis is actually tilted just a little it's not all that much but this tilt causes one part of the earth to lean towards the sun while another part of it is Lee this means that different parts of our planet's surface gets different amounts of sunlight and heat so why am I telling you all of this well as the Earth travels around the Sun it creates throughout the year this pattern happens over and over again and I'm sure you've noticed it at certain times of the year you see the Northern Hemisphere leans towards the sun and the southern hemisphere and at other times the southern hemisphere leans towards the sun and the Northern Hemisphere leans away that pattern my friend is what makes seasons in the part of the world that you're can is leaning towards the sun it's warm and the days are long summer when you're on the part that's leaning away from the sun it's cold and the days are short winter in between its singer is the earth tilted we would have the same season all year long Revolution rotation orbit is your head spinning do demonstration to shed a little light on these Concepts  okay you're going to need a globe in a table lamp without a shade what's the table to put them both on put the lamp in the center of the table and turn it on put the globe on one side of the table now Hit the Lights the globe is earth makes sense right the lamp at the center table is the Sun at the center of the solar system now slowly Spin The Globe as the Earth rotates the sun lights up one side of the planet better than the other it's day where the light is shining more brightly the globe and night where it's not now let's see what the Earth's revolution around the Sun looks like give the globe a few spins with one hand while slowly pushing the globe in a circle around the Sun lamp with your other hand so do you notice how the Earth keeps rotating as it revolves around the Sun If This Were the real Sun and Earth by the time you get back to where you started the globe would have completed 165 rotations or days and that's another year gone by so what does all this show us shows that would looks was to be the motion of the Sun in the sky is really caused by the motion of the earth so now you know when you look up and see the sun setting or Rising it's going around us it's sitting pretty much at the center of the solar system while we and the Seven other planets go around it that sun always got to be the center of attention

Uploaded by Greg Grammer.

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Ch. 6 Earth's Rotation Video

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