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The Earth's atmosphere has many roles

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Trade winds: low latitude winds that blow form east to west ... The measurement of the force exerted by air ... Winds that usually blow from the same direction ... – PowerPoint PPT presentation

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Title: The Earth's atmosphere has many roles


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  • The Earth's atmosphere has many roles
  • Provides gases living organisms need for
    respiration
  • Moves heat energy around on the planet
  • Absorbs ultraviolet radiation from the Sun

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Chapter 3
  • The Earths Atmosphere and Climates

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Daily QuestionSeptember 15/16
  • Explain the Greenhouse effect.

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Chapter 3 Vocabulary Quiz 1
  • Weather 14. Evaporation
  • Climate 15. Humidity
  • Temperature 16. Condensation
  • Greenhouse effect 17. Precipitation
  • Air pressure 18. Hurricane
  • Prevailing winds 19. Typhoon
  • Trade winds 20. Tornado
  • Doldrums 21. Elevation
  • Westerly winds 22. Orographic Effect
  • Polar winds 23. Rain-shadow Effect
  • Front 24. Monsoon
  • Remote sensors 25. Steppe
  • Landsat 26. Permafrost

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  • Weather the atmospheric condition at a given
    time and place.
  • Climate it is the weather averaged over a
    longer period of time in a large area.
  • Temperature the measurement of hot and cold in
    the atmosphere
  • Greenhouse effect trapping the heat in the
    atmosphere
  • Air pressure the measurement of the force
    exerted by air
  • Prevailing winds wind that usually blow in
    the same direction year round
  • Trade winds low latitude winds that blow form
    east to west
  • Doldrums areas along the equator that have no
    prevailing winds
  • Westerly winds middle latitude winds that
    blow from west to east.

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  • Polar winds high latitude winds that blow from
    east to west
  • Front two large air masses that differing heat
    meets.
  • Remote sensors satellites that measure the
    changes in the surface surface.
  • Landsat devices that takes pictures of the
    weather.
  • Evaporation when water turns into a gas.
  • Humidity amount of moisture in the air.
  • Condensation when the gas converts back into
    liquid.
  • Precipitation when the water droplets cannot
    stay in the atmosphere and comes water, sleet,
    and snow

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  • Hurricane severe tropical storm
  • Typhoon severe tropical storm
  • Tornado smallest but most violent of storms.
  • Elevation height above or below sea level
  • Orographic Effect is an effect where moisture is
    picked up from a large body of water and hits a
    barrier and is forced and drops all the moisture
    on the windward side of the mountain.
  • Rain-shadow effect is the desert on the
    leeward side of a mountain due to orthgraphic
    effect.
  • Monsoon heavy rainy season
  • Steppe the transition area between the arid
    desert than the more humid area. (grassy region)
  • Permafrost water underground that is frozen
    year round

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Vocabulary
  • Weather
  • The condition of the atmosphere at a given place
    and time
  • Climate
  • The weather conditions in an area averaged over a
    long period of time

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Chapter 3
  • The Earths Atmosphere and Climates

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  • Temperature
  • The measurement of heat energy in our atmosphere

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  • Greenhouse Effect
  • The changing of solar energy (sunlight) into heat
    energy by the Earths surface

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  • Air pressure
  • The measurement of the force exerted by air
  • Unequal heating of Earths surface causes
    differences in air pressure
  • Warm air expands, becomes lighter, and rises
  • This expansion creates low-pressure areas that
    cause unstable conditions (stormy weather)
  • Cold air is heavier and tends to sink, which
    causes high-pressure areas and stable conditions
    (good weather)

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  • Wind always flows from high-pressure areas to
    low-pressure areas
  • There are four major air-pressure zones
  • Equatorial low pressure zone
  • Subtropical high pressure zone
  • Subpolar low-pressure zone
  • Polar high pressure zone

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  • Prevailing winds
  • Winds that usually blow from the same direction
  • They always blow from a high- to a low-pressure
    area

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  • Trade winds
  • Winds that blow from subtropical high-pressure
    zone toward the equatorial low-pressure zone

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  • Doldrums
  • Calm areas with no prevailing winds along the
    equator

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  • Westerlies
  • Winds in the middle latitudes which predominately
    blow from west-to-east
  • Polar winds
  • High latitude winds that predominately blow from
    the east

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  • Front
  • Will occur when two air masses with very
    different temperatures and amounts of moisture
    meet
  • Fronts usually cause stormy weather

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  • Remote sensors
  • Devices attached to satellites that act as eyes
    in the sky
  • These allow scientists to monitor the physical
    changes occurring on Earth

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  • Landsat
  • Satellites that reveal the condition of the
    environment

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Deterioration in soil and plant life
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Maintaining Earths Energy Balance
  • Rotation
  • Day/Night
  • Revolution
  • Seasons
  • Global Winds
  • Exchange cold and warm air
  • Ocean Circulation
  • Exchange cold water and warm water

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Chapter 3 Vocabulary Quiz 2
  • Weather
  • Climate
  • Humidity
  • Greenhouse effect
  • Orographic Effect
  • Prevailing winds
  • Trade winds
  • Westerly winds
  • Doldrums
  • Rain-shadow Effect
  • Condensation
  • Evaporation

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Section 1 Review Questions
  • What causes differences in air pressure? How
    does air behave differently in a low-pressure
    area than a high pressure area?
  • Unequal heating of the Earths surface causes the
    differences in air pressure.
  • Low-pressure areas are unstable, and air rises
    and cools, causing storms high-pressure areas
    are stable, and air sinks and heats, creating dry
    weather.

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  • How do global wind patterns and global ocean
    current patterns help Earth maintain an energy
    balance?
  • They distribute heat and cold between the warm
    tropical regions and the cold polar regions.

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  • Evaluate the importance of the atmosphere to our
    planets energy systems.
  • Without the atmosphere, Earth would not be able
    to retain any of the Suns energy.

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Chapter 3, Section 2 Atmospheric Effects
  • Water and the Atmosphere
  • Evaporation
  • The process by which water is changed from a
    liquid to a gas
  • Humidity
  • The amount of water vapor in the air
  • Condensation
  • The process by which water vapor is changed from
    a gas to a liquid
  • Precipitation
  • When water droplets become large enough, they
    fall in the form of rain, sleet, snow, or hail

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Storms
  • Occur under low pressure conditions
  • Hurricanes
  • Severe tropical storms
  • Atlantic and northeast Pacific
  • Typhoons
  • Severe tropical storms
  • Western Pacific

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Hurricanes
  • A hurricane is a big storm that forms over the
    ocean.
  • Hurricanes form over warm parts of the Atlantic
    Ocean, and the Pacific Ocean.
  • They form near the equator

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Typhoons
  • In Northern hemisphere rotation is counter
    clockwise
  • In Southern hemisphere rotation is clockwise

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Tornado
  • The smallest but most violent of storms
  • The twisting spirals of air can destroy almost
    anything in its path

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Thunderstorms
  • Most common
  • Every moment about 2,000 thunderstorms are
    occurring
  • Lightening strikes kills or injures hundreds of
    people every year

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Severe Thunderstorms
  • Despite their small size, all thunderstorms are
    dangerous. Every thunderstorm produces lightning,
    which kills more people each year than tornadoes.
  • Heavy rain from thunderstorms can lead to flash
    flooding. Strong winds, hail, and tornadoes are
    also dangers associated with some thunderstorms.
  • Thunderstorms affect relatively small areas when
    compared with hurricanes and winter storms. The
    typical thunderstorm is 15 miles in diameter and
    lasts an average of 20 to 30 minutes.
  • Of the estimated 100,000 thunderstorms that occur
    each year in the United States, only about 10
    percent are classified as severe.

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Elevation and Temperature
  • Elevation
  • Height above Earths surface or below sea level
  • The higher you go the cooler it gets
  • 2C or 3.6F every 1,000 feet of elevation

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Orographic Effect
  • Moist air from the ocean meets a barrier
    (mountain) on windward side
  • Air is forced to rise
  • As it rises, it cools
  • Condensation occurs
  • Then precipitation occurs
  • Has lush vegetation

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Chapter 3 Vocabulary Quiz 2
  • Climate
  • Humidity
  • Greenhouse effect
  • Orographic Effect
  • Trade winds
  • Westerly winds
  • Doldrums
  • Rain-shadow Effect
  • Condensation
  • Evaporation

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Rain-shadow Effect
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