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Climate

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Climate What are the conditions that contribute to the climate of an area? Day 1: Factors Effecting Climate Climate is the pattern of long term weather conditions ... – PowerPoint PPT presentation

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Title: Climate


1
Climate
  • What are the conditions that contribute to the
    climate of an area?

2
Day 1 Factors Effecting Climate
  • Climate is the pattern of long term weather
    conditions found in an area.
  • Working with your partner brainstorm a list of
    factors that determine the climate in a region.

3
Main Factors that Influence Temperature.
  • Latitude temperatures increase as you get
    nearer to the equator. Seasonal differences
    between winter and summer are greater near the
    poles because of Earths tilt.
  • Altitude temperatures decrease as you get
    higher.
  • Proximity to Large Bodies of Water water heats
    and cools more slowly than land.
  • Ocean Currents can carry energy from warmer
    regions with them or cooler weather if they
    originate near Earths poles.

4
Factors that mainly affect precipitation
  • Prevailing winds may bring in a certain type of
    weather from where they originate. For example,
    winds coming in from the oceans will bring
    moisture.
  • Topography Mountains can cause rain shadows by
    blocking block prevailing winds.
  • Seasonal Winds often bring in moisture (like
    Monsoons) or drier air to a region.

5
Day 2 Focus on oceans.
  • The sea affects the climate of a place.  Coastal
    areas are cooler and wetter than inland areas.
    Clouds form when warm air from inland areas meets
    cool air from the sea. 
  •  
  • The centre of continents are subject to a large
    range of temperatures.  In the summer,
    temperatures can be very hot and dry as moisture
    from the sea evaporates before it reaches the
    centre of the continent. 

6
Day 2 Questions
  • 1) Which location would you expect to have
    greater differences between summer temperatures
    and winter temperatures Tampa or Orlando,
    Florida? Which would have more moisture?
  • 2) Why do oceans and lakes moderate the
    temperature of a region? Relate your answer. to
    the heat capacity of water versus the heat
    capacity of soil and rock.
  • 3) Ocean currents can also affect the climate of
    a region. What ocean current helps keep Florida
    an attractive vacation destination during the
    winter?

7
Day 2 Answers
  • 1) Orlando, in general, has greater seasonal and
    daily differences in temperature than Tampa due
    to its interior location. Tampa would have more
    moisture and thunderstorms due to its location on
    the coast.
  • 2) Water has a higher heat capacity than land.
    Water therefore heats up slowly and cools down
    slowly, moderator the temperature of things
    around it. Land heats up quickly and slows down
    quickly.
  • 3) The Gulf Stream originates near the equator
    and flows past Floridas east coast. The Gulf
    stream flows far enough north to keep the
    climates of Ireland, Great Britain and even the
    coast of Norway warmer than they normally would
    be based on their latitude.

8
Day 3 Affect of Topography
  • Mountains can affect the climate on either side
    of them by creating rain shadows.

The satellite image to the right shows a classic
rain shadow effect on one of the islands of
Hawaii. Notice the stark contrast between lush,
tropical vegetation and fry lands. See where the
clouds are located.
9
What Causes the Rain Shadow Effect?
  1. As warm, moist air rises along the windward side
    of mountain, it expands due to lower air
    pressure.
  2. Expansion causes cooling (let the pressure out
    of a tire and feel the cool air.)
  3. As the air cool, it condenses, forms clouds and
    eventually drops it moisture.

4. Drier air than crosses the mountain top. As
it descends the leeward side of the mountain the
opposite happens. The air compresses, warms and
evaporates.
10
Day 3 Rain Shadow.
  • 1. Expansion of air causes it to ________.
  • A) warm up and evaporate. B) cool down and
    evaporate
  • C) warm up and condense D) cool down and
    condense
  • Compression of air causes it to ________.
  • A) warm up and evaporate. B) cool down and
    evaporate
  • C) warm up and condense D) cool down and
    condense
  • 3. Why does air expand as it rises and
    compress as it descends?
  • 4. In a rain shadow effect moisture falls on
    the windward side of a mountain or the leeward
    side? (The windward side is the side that the
    prevailing winds hit first).

11
Day 3 Final Review
  • 4. Is this a rain shadow?

12
Day 4 Quiz (Bonjour)
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