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Global Warming




Enviado por Analía Massa



Partes: 1, 2

    1. Climate change, what it
      is
    2. Greenhouse effect, climate change, and
      global warming
    3. Climate and Weather
    4. Greenhouse Effect
    5. What is the
      climate system?
    6. Climate"s
      come a long way!
    7. Can we change the
      climate?
    8. When do you send
      greenhouse gases into the air?
    9. So… What"s the big
      deal?
    10. We can make a
      difference!

    Climate change, what it
    is

    Earth has warmed by about 1 over the
    past 100 years. But why? And how? Well, scientists are not
    exactly sure. The Earth could be getting warmer on its own, but
    many of the world's leading climate
    scientists think that things people do are helping to make the
    Earth warmer.

    Earth's Temperature

    GREENHOUSE EFFECT, CLIMATE
    CHANGE, AND GLOBAL WARMING

    The Greenhouse Effect: Scientists are sure about the greenhouse
    effect
    . They know that greenhouse gases
    make the Earth warmer by trapping energy in the atmosphere.

    Climate Change: Climate is the long-term average of a
    region's weather events
    lumped together. For example, it's possible that a winter day in
    Buffalo, New York, could be sunny and mild, but the average
    weather – the climate – tells us that Buffalo's winters will
    mainly be cold and include snow and rain. Climate change
    represents a change in these long-term weather patterns. They can
    become warmer or colder. Annual amounts of rainfall or snowfall
    can increase or decrease.

    Global Warming: Global warming refers to an average
    increase in the Earth's temperature, which in turn causes changes
    in climate. A warmer Earth may lead to changes in rainfall
    patterns, a rise in sea level, and a wide range of impacts on
    plants, wildlife, and humans. When scientists talk about the
    issue of climate change, their concern is about global warming
    caused by human activities.

    Climate and
    Weather

    Weather
    is all around us. Weather may be one of the first things you
    notice after you wake up. Chances are, if it is cold and snowing,
    you'll wear a jacket when you go outside. If it's hot and sunny,
    you may wear shorts.

    Sounds pretty simple, right? But what about climate?
    How is it different from weather? And what is weather,
    exactly?

    2 Cartoons of same house: one in rainstorm and one on sunny day. The weather can change very quickly from rain to sunshine.

    Weather

     Weather describes whatever is happening outdoors in a given
    place at a given time. Weather is what happens from minute to
    minute. The weather can change a lot within a very short time.
    For example, it may rain for an hour and then become sunny and
    clear. Weather is what we hear about on the television news every
    night. Weather includes daily changes in precipitation,
    barometric
    pressure
    , temperature, and wind conditions in a given
    location. What is your weather like today?

    Climate

     Climate describes the total of all weather occurring over a
    period of years in a given place. This includes average weather
    conditions, regular weather sequences (like winter, spring,
    summer, and fall), and special weather events (like tornadoes and
    floods). Climate tells us what it's usually like in the place
    where you live. San Diego is known as having a mild climate, New
    Orleans a humid climate, Buffalo a snowy climate, and Seattle a
    rainy climate. How would you describe the climate where you
    live?

    Cartoon of dinosaurs 65 million years ago to ice age 15000 years ago to present age of modern man. Climate can change too, but in the past it has taken a very long time to do so.

    Greenhouse
    Effect

    Greenhouse

    The greenhouse
    effect
    is the rise in temperature that the Earth experiences
    because certain gases in the
    atmosphere
    (water vapor, carbon
    dioxide
    , nitrous
    oxide
    , and methane,
    for example) trap energy from the sun. Without these gases, heat
    would escape back into space and Earth"s average temperature
    would be about 60ºF
    colder. Because of how they warm our world, these gases are
    referred to as greenhouse
    gases
    .

    Partes: 1, 2

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