chapter_03 - Click to edit Master subtitle style Chapter 3:...

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Unformatted text preview: Click to edit Master subtitle style Chapter 3: Seasonal and Daily Temperatures Earth revolves around the Sun at thousands of km/hr Distance from sun does not determine the seasons!! Earths Revolving Earths Rotation Seasons are regulated by the amount of solar energy received at the surface I. Why Does Earth Have Seasons? Solar Angles Effect on Radiation Intensity I. Why Does Earth Have Seasons? Why are summer days longer than winter days? Why is the noon sun higher in the sky in summer? Is the axis always pointing in the same direction? What If Earth were not tilted? Earth & The Seasons I. Uneven heating of Earths surface causes predictable latitudinal variation in climate. North Pole Earth Equator South Pole Climatic Variation & Seasons on Earth Uneven heating of Earths surface causes the atmospheric circulation Greater heating at equator than at poles Climatic Variation & Seasons on Earth http://www.cnrt.scsu.edu/~jcash/teaching/astro/seasons.pdf Some Common Misconceptions Seasons are caused by the distance to the sun? Seasons are caused by the weather? Tilt! Because of the tilt of Earths axis, the amount of radiation received by Northern and Southern Hemispheres varies seasonally Earths distance from the sun varies throughout the year doesnt that cause the seasons? http://www2.for.nau.edu/courses/hart/for479/Documents/Lecture%202,%20Ecosystem%20Ecology.ppt What about seasons? Why do we have them? Tilt of the Earths axis toward or away from the sun creates the seasons N o r t h P o l e E a r t h S o u t h P o l e E q u a t o r Earths Seasons N o r t h P o l e E a r t h S o u t h P o l e E q u a t o r Earths Seasons Tilt of the Earths axis toward or away from the sun creates the seasons Earth & The Seasons Summer and Winter Solstice Solstice is when sun is at its greatest distance from equator. Vernal and Autumnal Equinox Equinox sun is directly over the equator and day and night are equal in length...
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chapter_03 - Click to edit Master subtitle style Chapter 3:...

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