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42 Cards in this Set
- Front
- Back
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The condition of Earth's atmosphere at particular time is ________?
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WEATHER
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Atmosphere is what?
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The envelope (layer) of gases that surrounds the planet
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What percent of Nitrogen is the atmosphere made up of?
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78%
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What percent of Oxygen is the atmosphere made up of?
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21%
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What is the Ozone?
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A form of oxygen that has 3 OXYGEN ATOMS instead of 2
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What is necessary in order for plants to produce food?
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CARBON DIOXIDE
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Carbon dioxide is the byproduct of _______ burning and of plant and animal cells ______ _____ .
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FUELS
BREAKING DOWN |
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1% OF the atmosphere is other gases such as :
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Argon, Carbon dioxide, Neon, Helium, Methan, Krypton, Hydrogen
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Water vapor is a form of ___?
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GAS
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What is the importance of the Atmosphere?
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it contains oxygen and other gases living things need to survive.
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How does the ATmosphere protect you?
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It protects you from dangerous radiation, traps energy from the sun and keeps moisture that is needed in liquid form
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What are the 2 properties of AIR?
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MASS AND DENSITY
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The amount of matter in a given VOLUME is called ?
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DENSITY
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Mass the amount of _____ in an OBJECT.
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MATTER
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Volume is the _____ an object takes up
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SPACE
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DENSITY = ?
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MASS/ VOLUME
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The force pushing on an area or surface is called ?
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PRESSURE
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THE WEIGHT OF A COLUMN OF AIR PUSHING DOWN IN AN AREA IS?
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AIR PRESSURE
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An instrument that is used to measure air pressure is?
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BAROMETER
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HOW does a Mercury Barometer work?
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a glass tube is opened at the bottom end and partly filled with mercury. When air pressure pushes down on the surface of the mercury it forces it to rise in the tube.
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How does a Aneroid Barometer work?
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It has an airtight metal chamber that is sensitive to changes in air pressure. The chamber is connected to to a dial that gives a reading.
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What does ANEROID mean?
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without liquid
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What is the unit of air pressure?
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MILLIBARS or inches of mercury
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Elevation above sea level is called?
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ALTITUDE
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hOW DOES ALTITUDE AFFECT AIR PRESSURE?
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air pressure decreases as altitude increases
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What are the 6 main layers on page 523
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know all of them
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How is the atmosphere divided?
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according to temperature
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Which is the inner layer 0-12km above the earth where weather occurs?
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TROPOSPHERE
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Which layer extends from top of Troposphaere up to about 50 km above Earth surface. The ozone layer is found here.
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Stratosphere.
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Which layer begins 50 km avove Earth's surface and ends at 80km. it has 90 degrees Celsius.
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MESOSPHERE
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Which layer protects Earth's surface from being hit by meteroids?
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MESOSPHERE
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Which layer traps much of the ultraviolet radiation from the sun?
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STRATOSPHERE
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Which layer has very thin air and temperature up to 1,800 degrees Celsius?
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THERMOSPHERE
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Which layer is outer layer of Earth's atmosphere?
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THERMOSPHERE
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The THERMOSPHERE has two layers which are ____ and _____.
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Ionosphere-radio waves are reflected there and its lower level.
Exosphere- outer layer of thermosphere |
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What are the harmful substances in the air, water and soil?
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POLLUTANTS
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Name Natural Sources of pollutants?
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foreset fires, soil erosion, dust storms, molds, pollen
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What are some human activities that are the source of pollutants?
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farming, construction, burning of fossil fuels
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What causes the London-type Smog?
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particles in coal smoke combined wiwth water droplets in humid air
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What causes Photchemical Smog?
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A brown haze that develops in sunny cities formed by sunlight on pollutants such as hydrocarbons and nitrogen oxides
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Rain that has been made acidic by pollutants is called?
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ACID RAIN
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Be able to understand the chart on the layers of the atmosphere and gases in dry air.
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attached to your study guide. also pg. 526 graph
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