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UNIT 7

UNIT 7. Period 5. Brianna Buckner, Alonzo Goodrich, Jacob Johnson, Brandon Lytle. Human Effects on The Environment.

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UNIT 7

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  1. UNIT 7 Period 5 Brianna Buckner, Alonzo Goodrich, Jacob Johnson, Brandon Lytle

  2. Human Effects on The Environment • Global climate change has already had observable effects on the environment. Glaciers have shrunk, ice on rivers and lakes is breaking up earlier, plant and animal ranges have shifted, and trees are flowering sooner. • Effects that scientists had predicted in the past would result from global climate change, are now occurring: loss of sea ice, accelerated sea level rise, and longer, more intense heat waves.

  3. Scientists have high confidence that global temperatures will continue to rise for decades to come, largely due to greenhouse gases produced by human activities. Mobile Causes for Air Pollution: • Every time we drive a car, boat, or truck, we are releasing large amounts of pollutants into the atmosphere. As the gasoline is burned by our engines to power the vehicle, waste products are being released into the air through the exhaust system. These waste products include high levels of poisonous carbon monoxide, nitrogen oxide, and hydrocarbons. • aurora lights- shines above arctic & Antarctic regions, natural light through solar winds .

  4. How The Atmosphere and Hydrosphere Affect The Climate • Water and carbon dioxide allow shorter wave-length solar radiation to pass through the atmosphere. • Condensation build -up in the atmo- sphere creates Clouds • Cloud types- cumulus, stratus, cirrus nimbus , high level – low level clouds

  5. When Earth’s surface cools rapidly by radiation on a cool, clear, calm night, radiation fog is formed. How Fossil Fuels Affect The Climate • Factories contain a lot of different fossil fuels that when burnt, like oil, makes fumes; that travel into the atmosphere and can at times make a dramatic on climate, also can lead to global warming. • Cars today, still burn gas on oil and in some cases can mess up the natural balance in our climate. • Gas stations are one of the main causes of the ozone layer being unbalanced. • Solar energy – radiant energy emitted by the sun

  6. Where Tornados and Hurricanes Get Their Energy • Hurricanes can cause waves as big as 50+ feet in the open ocean, which can be catastrophic when they reach the shore. • Tornadoes are caused when cold and warm air mixes which cause a funnel cloud. • Tornadoes are detected by Doppler radars which can detect and scale tornadoes and their strength from 65,000 square kilometers. • Front types- weather front of 2 different masses of air different densities • Mesocyclone- a vortex of air, where tornadoes may form ;approx . 2 to 10 miles in diameter http://www.youtube.com/watch?v=35Fa0NBcNqQ&feature=youtube_gdata_player

  7. How surface-ocean conditions affect global weather and climate patterns

  8. The ocean covers more than 70 percent of the Earth’s surface. The ocean plays a major role in regulating the weather and climate of the planet. WATER CYCLE Since the water cycle is truly a "cycle," there is no beginning or end. Water can change states among liquid, vapor, and ice throughout in the water cycle. Water evaporates from the ocean and the Earth’s surfaces, rises and cools as it moves higher in the atmosphere, condenses as rain or snow, and falls to the surface where it collects in lakes, ocean, soil, and underground. “The Everything Book” pg. 38 pg. 3 Adomo Media Corporation 2002

  9. Because water in the ocean holds a large amount of heat, the ocean has a major effect on climate. When air in contact with the ocean is at a different temperature than the sea surface, heat transfer by conduction takes place. The ocean also absorbs and stores energy from the sun, and when precipitation falls, it releases heat energy into the atmosphere. • Meteorites – natural subject originating in outer space that survives impact with earths surface.

  10. Temperature differences in the atmosphere are a result of the way solar energy is absorbed as it moves through the atmosphere. The transfer of heat energy within the atmosphere, hydrosphere, and the Earth’s surface and interior occurs as a result of radiation, convection, and conduction. Ocean currents play a significant role in transferring this heat toward the poles.

  11. El Niño, which is characterized by unusually warm ocean temperatures in the same region. Consequences of El Niño or La Niña require scientists to make short-term climate predictions. To provide the necessary data, NOAA operates a network of buoys, which measure temperature, currents, and winds in the equatorial band. These buoys transmit data on daily basis, which are available to researchers and forecasters around the world in real time. http://oceanservice.noaa.gov/education/pd/oceans_weather_climate/welcome.html

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