climate and vegetation


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climate and vegetation

  1. 1. Climate and Vegetation By :Jawad Yammine 7C
  2. 2. What will you learn?  Earth’s rotation and revolution  Seasons  Weather and climate  Causes of weather and climate  Climate and vegetation
  3. 3. Earth’s rotation and revolution  The earth rotates as it revolves around the sun. Rotation is the motion of the earth as it spins on its axis once every 24 hours.  The earth is tilted at a 23.5 angle. The earth’s revolution around the sun affects the weather and climate change. The earth’s tilt stays the same as it revolves around the sun.
  4. 4. Season  Solstice is used to describe the time during the year when the sun reaches the farthest northern or southern hemisphere in the sky.  In the Northern and southern Hemisphere the summer day is longer than the night, but In the winter the day is shorter than the night. In spring and autumn the day and night are equal in length.  Next page…….
  5. 5. Season  The earth’s revolution brings the temperature and weather changes we call season to many parts of the earth. But in some regions there is little change
  6. 6. Weather and climate  People often confuse weather and climate. The difference between weather and climate is that the weather is the condition of earth’s atmosphere at a given time and place climate is the term for the typical weather conditions of a certain region over a long period of time.
  7. 7. Causes of weather and climate  Factors that interact to cause weather are solar energy, wind, landforms, bodies of water, water vapor, cloud cover and elevation. The most important weather factor is the amount of energy. Clouds hold water vapor in the atmosphere, water vapor determines whether there will be precipitation. In elevation the temperature drops to 3.5 F for every 1000 foot increase. A places location and latitude determine the weather in a region.
  8. 8. Climate Regions  To categorize climate regions, geographers divide the earth into three general zones of latitude : tropical, middle and high. These zones are found on both sides of the equator. Tropical latitudes are found between the equator and tropic of cancer and between the equator and the tropic Capricorn where it is usually hot. Middle latitudes extend from the tropic lines to the lines of the Artic and Antarctic circles. High latitude refers to the cold areas around the north and south poles.
  9. 9. Vegetation Regions  The term vegetation is used to describe an area that has similar plants. A vegetation region is named for the types of trees, grasslands and specially adapted plants. The four basic types of vegetation are: forest, savanna, grasslands and desert. Forests can be a either cold, tropical or temperate. Savanna is a mix of grasslands and trees.  Which vegetation region do you think we are living in and why?