Unit 4 Module 2 SOLAR ENERGY AND THE ATMOSPHERE Archie a. duran
In this module… Let’s talk about the invisible blanket where all weather events happen. ATMO- air SPHERE- round like a ball
LAYERS OF THE ATMOSPHERE
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TROPOSPHERE layer closest to Earth’s surface p art of the atmosphere where animals and plants live temperature just above the ground is hotter than the temperature high above .
TROPOSPHERE weather occurs in the troposphere because this layer contains most of the water vapor (clouds and storms) air in the troposphere is constantly moving JET STREAM
STRATOSPHERE l ayer of air that extends to about 50 km from Earth’s surface a ir flows in a horizontal direction
STRATOSPHERE very little water vapor This is where the ozone layer is found t emperature increases with height
MESOSPHERE layer between 50 km and 80 km above the Earth’s surface air in this layer is very thin and cold
MESOSPHERE coldest region of the atmosphere t emperature decreases with height m eteors or rock fragments burn up in the mesosphere.
THERMOSPHERE between 80 km and 500 km above the Earth. topmost part of the Earth’s atmosphere ionosphere
THERMOSPHERE space shuttles fly in this area and it is also where the auroras are found. Auroras are caused when the solar wind strikes gases in the atmosphere above the Poles. Why can we not see auroras in the Philippines?
EXOSPHERE the upper limit of our atmosphere composed primarily of hydrogen and helium
EXOSPHERE this layer of the atmosphere merges into space s atellites are stationed in this area, 500 km to 1000 km from Earth.
The ATMOSPHERE composed of different gases 78% Nitrogen 21% Oxygen 0.9% Argon 0.03% Carbon dioxide 0.07% other gases
The ATMOSPHERE Provides necessary gases to sustain life Keeps the temperature warm enough for life to continue Transports energy and water over the face of the Earth
Protects us from harmful ultraviolet radiation Shields us from the bombardment of meteoroids, asteroids and other objects from outer space
Invisible Blanket Without Earth’s invisible blanket, Surface temperature would be very cold Large meteoroid may hit the planet Sunsets would never have brilliant colors Life as we know it would be impossible
What is Greenhouse Effect?
greenhouses allow sunlight to enter but prevent heat from escaping air warmed inside is retained in the building by the roof and wall
the Earth’s atmosphere is compared to a greenhouse it contains trace gases the trace gases have similar effect on the Sun’s rays like the glass in a greenhouse
Greenhouse Effect natural process the process by which the Earth’s atmosphere warms up trace gases are referred to as greenhouse gases
Greenhouse Gases water vapor carbon dioxide aerosols (particles suspended in the air) clouds nitrous oxide methane CFC ozone (tropospheric)
Sources of Greenhouse Gases people and animals
Sources of Greenhouse Gases volcano animal manure (methane) ozone in the troposphere
Which fossil fuel has the highest contribution to carbon dioxide concentration in the atmosphere?
Enhanced Greenhouse Effect
Enhanced Greenhouse Effect human activities (carbon dioxide) increased as much as 30% in 200 years burning of fossil fuels (greatest contributor)
Is Earth Getting Warmer?
more carbon dioxide makes the atmosphere thicker more heat cannot return back into space. more heat trapped by the carbon dioxide means a warmer Earth.
Global Warming increase in temperature of the Earth global means all countries and people around the world are affected.
Effects of Global Warming human health melting glaciers will raise sea levels occurrence of more violent storms
Effects of Global Warming extinction of species decreased food production increased susceptibility to forest fires