physical and human geography. earth’s rotation and revolution 1 revolution = 1 year, 1 rotation =...
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![Page 1: Physical and Human Geography. Earth’s Rotation and Revolution 1 revolution = 1 year, 1 rotation = 1 day Earth has a 23.5 degree tilt May – Sept. - Northern](https://reader035.vdocuments.mx/reader035/viewer/2022062518/56649eff5503460f94c148e4/html5/thumbnails/1.jpg)
Physical and Human Geography
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Earth’s Rotation and Revolution
• 1 revolution = 1 year , 1 rotation = 1 day• Earth has a 23.5 degree tilt• May – Sept. - Northern Hemisphere
receives more direct sunlight making it warmer, Southern Hemisphere less making it cooler
• Nov. – April- Northern Hemisphere receives less direct sunlight making it cooler, Southern Hemisphere more making it warmer
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4 Seasons- Solstice- exact moment when summer and winter
start- June 20th or 21st
– Longest day of the year in Northern Hemisphere( summer)
– Shortest day of the year in Southern Hemisphere(winter)
• Dec. 21st or 22nd
– Shortest day of the year in Northern Hemisphere(winter)
– Longest day of the year in Southern Hemisphere(summer)
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4 Seasons
• Equinox- day and night are the same length
• September 23rd
- Fall in Northern Hemisphere
- Spring in Southern hemisphere
• March 21st– Spring in Northern hemisphere– Fall in Southern hemisphere
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Earth’s Structure
• Crust- landmasses and ocean floor
• Upper and Lower Mantle - consists of magma
• Outer core- made mostly of liquid iron and nickel
• Inner core- hotter than the surface of the sun, made of solid iron
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Tectonic Plates
• Sections of crust that float on the mantle• Constant, slow shift of plate and continents is
“continental drift”• Plates move in 4 ways: subduction,
divergence, convergence and transformation• Each movement causes an event( volcanoes
to form, mountains from ocean floor, mountain ranges, earthquakes)
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The Ring of Fire
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The Ring of Fire
• Large ocean plates slide against each other in Asia, Australia, South America and North America
• Cause:– Earthquakes– Tsunamis– Volcanoes
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Waters of the Earth
• Evaporation- sun heats up water and water vapor rise up into the atmosphere
• Condensation- Cool temperatures turn water vapor into droplets that form clouds
• Precipitation- water droplets grow heavier and fall back to the Earth as snow or rain
• Runoff- precipitation soaks into the ground and runs into rivers, lakes and eventually into the ocean