Physical and Human Geography

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Physical and Human Geography
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Earths 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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Earths 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