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27 Cards in this Set
- Front
- Back
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Weather
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Is the condition of Earths atmosphere at a particular time and place.
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Atmosphere
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is the envelope of gases that surrounds the planet.
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what is the atmosphere made up of?
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nitrogen, oxygen, carbon dioxide, water vapor, and many other gases
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ozone
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is a form of oxygen that has 3 oxygen atoms in each molecule instead of the usual two
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Water Vpaor
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Water in the form of a gas
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Why is the earth suitable for living?
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1. It contains oxygen and other gases that you need and other living things need to survive.
2. It traps the warmth and liquid water that we need to live. 3. It protects us from living radiation. |
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Density
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the amount of mass in a given volume of air
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pressure
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the force pushing on an area of surface
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air pressure
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is the result of weight of a column of air pushing down on an area.
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barometer
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is the instrument that is used to measure air pressure.
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2 types of barometers
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mercury barometer and aneroid barometer
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mercury barometer
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consists of a glass tube at the bottom end and partially filled with mercury.
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aneroid barometer
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has an airtight metal chamber
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altitude
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or elevation is the distance above sea level the average level of the surface of the oceans.
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4 main layers of the atmosphere
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troposphere, stratosphere, mesosphere, thermosphere
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how are they classified?
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by temperature
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troposphere
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where we live. this is where earths weather occurs
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stratosphere
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is the 2nd layer of the atmosphere and contains the ozone layer
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Mesosphere
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is the layer of the atmosphere that protects earths surface from being hit by meteoroids
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thermosphere
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the outermost layer of the earths atmosphere. it contains the ionosphere and the exosphere
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ionosphere
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radio waves are reflected
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exosphere
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where the satelites are
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pollutants
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harmful substances in the air, water and soil
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natural pollutants
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forest fires, dust storms, soil erosions
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man made pollutants
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burning fossil fuels, cars, trucks and plains
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photochemical smog
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the brown haze that developes in the sunny cities. it is formed by the action of sunlight on pollutants such as hydrocarbons and nitrogen oxides
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acid rain
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rain that is naturally slightly acidic, but rain that contains more acid than normal is known as acid rain.
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