0
Climate and Climate Change
Chapter 25
Temperature and Precipitation
• Climates describe by average
temperature and precipitation
• Yearly average temperature ra...
Global Wind Patterns
• Solar energy (or lack of) cause pooling of
either warm, less dense air (equator) or cold
dense air ...
Climates and Latitude
• 20 - 30 degrees - subtropical highs (air
sinks, warms and dries) with little
precip.
• 45-60 degre...
Heat Absorption
• Land heats faster than water (which is moving
and mixing constantly, changing the
temperature)
• Specifi...
El Nino Oscillation (ENSO)
• Cycle of changing wind and water-current
patterns in the Pacific
• El Nino the warm water pha...
Special Circumstances
• Rain Shadows
– Air that moves up a mountain slope
condenses as it cools, causing
precipitation
– A...
Climate Zones
Tropical
Climates

High Temp,
high rainfall

Equator

Rainforest,
desert,
Savanna
Middle
Latitude

Moderate
...
Climate CHange
• Page 641, table 1
• Understanding Isotopes
– Atoms of the same elements that have the
same number of prot...
Just the Facts

Climate Change
Plate Tectonics
Volcanic Activity

Orbital Changes
Tilt of the Earth

Human Activity
Increa...
Latitude
• The higher the latitude the smaller the angle
of the sun’s rays hitting the Earth
• The smaller the angle the l...
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Climate

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Climate PPT for 6th Grade Earth Science

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Transcript of "Climate"

  1. 1. Climate and Climate Change Chapter 25
  2. 2. Temperature and Precipitation • Climates describe by average temperature and precipitation • Yearly average temperature range • Precipitation - months with greatest amount focused on
  3. 3. Global Wind Patterns • Solar energy (or lack of) cause pooling of either warm, less dense air (equator) or cold dense air w/ high pressure (poles) • These differences in air pressure create winds • Air close to the equator (the doldrums) air rises and cools and water vapor condenses causing greater amounts of precipitation • The amount fof precipitation decreases then, as you increase in latitude
  4. 4. Climates and Latitude • 20 - 30 degrees - subtropical highs (air sinks, warms and dries) with little precip. • 45-60 degrees - mid latitudes - polar air and warm tropical air meet, causing greater precip. • Above 60 degrees - cold and dry
  5. 5. Heat Absorption • Land heats faster than water (which is moving and mixing constantly, changing the temperature) • Specific Heat is higher for water - meaning that it takes greater energy to raise 1 g of water 1 degree - meaning too, that the water will hold onto heat a longer time. • This difference in land and water heating/cooling rates also contributes to precip. And winds
  6. 6. El Nino Oscillation (ENSO) • Cycle of changing wind and water-current patterns in the Pacific • El Nino the warm water phase of the cycle causes temperatures along the west coast of South America to rise, causing the interaction of the ocean and atmosphere to change • Typhoons, cyclones, and floods are common during the El Nino cycle • Cool water phase is called El Nina
  7. 7. Special Circumstances • Rain Shadows – Air that moves up a mountain slope condenses as it cools, causing precipitation – As that same air moves over the mountain range and moves down along its slope the air compresses and warms, causing dry hot conditions – Deserts
  8. 8. Climate Zones Tropical Climates High Temp, high rainfall Equator Rainforest, desert, Savanna Middle Latitude Moderate 0-60 degrees Temp. range, north varying precip. 0-60 degrees south Polar Climates Can have 60-80 degrees
  9. 9. Climate CHange • Page 641, table 1 • Understanding Isotopes – Atoms of the same elements that have the same number of protons, but a different number of neutrons – Indicate change - temp increases, O 18 decreases, temp. decreases, O16 increases
  10. 10. Just the Facts Climate Change Plate Tectonics Volcanic Activity Orbital Changes Tilt of the Earth Human Activity Increased Emissions
  11. 11. Latitude • The higher the latitude the smaller the angle of the sun’s rays hitting the Earth • The smaller the angle the less solar energy received and the lower the temperature • Less range of temperatures influences the amount of varying heat on the Earth, thus changing the winds/precipition • The longer the daylight the greater the amount of solar energy and higher temperatures - the equator has constant warm temperatures due to direct sun rays
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