Physical and Human Geography - PowerPoint PPT Presentation

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Physical and Human Geography

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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 ... – PowerPoint PPT presentation

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Title: Physical and Human Geography


1
Physical and Human Geography
2
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

3
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4
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)

5
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

6
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7
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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9
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)

10
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11
The Ring of Fire
12
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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17
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
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