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Atmosphere
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IMPORTANCE CONTAINS OXYGEN, CARBON DIOXIDE, AND WATER INSULATOR
PROTECTION FROM METEORS
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ORIGINS 1. COOLING OF MOLTEN ROCK 2. WATER VAPOR (g) RAIN (l) OCEANS 3. ORGANISMS USED CO2 AND SUN O2 OTHER ORGANISMS
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COMPOSITION GASES - 78% NITROGEN - 21% OXYGEN
- 1%: ARGON, CO2, WATER VAPOR SOLIDS - POLLEN, SALT, AND DUST LIQUID - WATER AND ACIDS
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REVIEW WHAT GASES ARE THE EARTH’S ATMOSPHERE MADE UP OF?
MOSTLY NITOGREN, THEN OXYGEN, AND SMALL AMOUNT OF ARGON, CO2, AND WATER VAPOR
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LAYERS TROPOSPHERE - WARMEST NEAR SURFACE STRATOSPHERE
- LOWER: HIGH AMOUNT OF OZONE GAS (OZONE LAYER) - ABSORBS ULTRAVIOLET RAYS PROTECTION
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MESOSPHERE AND THERMOSPHERE
- LARGER THAN 1ST TWO LAYERS - ONLY 1% GAS - BURN UP METEORS BY FRICTION - CONTAINS IONOSPHERE - CHARGED PARTICLES - AUROAS
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EXOSPHERE - PRESSURE AND DENSITY VERY LOW - MOLECULES MOVE AT FAST SPEEDS
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REVIEW WHAT ARE THE LAYERS OF THE ATMOSPHERE STARTING WITH THE ONE CLOSEST TO THE EARTH? TROPOSPHERE: CLOUDS + PLANES STRATOSPHRE: OZONE LAYER + WEATHER BALLOON MESOSPHERE: METEORS BURNED UP THERMOSPHERE: METEORS + AURORAS EXOSPHERE: SATELITES
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PRESSURE AND ALTITUDE GRAVITY PULLS ATMOSPHERE TOWARD EARTH
HIGHER THE ALTITUDE LESS DENSE
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TEMPERATURE AND ALTITUDE
TROPOSPHERE -TEMP. DECREASE AS ALTITUDE INCREASES STRATOSPHRE -TEMP. INCREASE AS ALTITUDE INCREASES MESOSPHERE -TEMP. DECREASE AS ALTITUDE INCREASE THERMOSPHRE + EXOSPHERE -TEMP. INCREASE AS ALTITUDE INCREASE
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REVIEW HOW DOES TEMPERATURE CHANGE AS ALTITUDE INCREASES WITHIN EACH OF THE LAYERS OF THE ATMOSPHERE?
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SUN ENERGY RADIATION -VISIBLE LIGHT -UV LIGHT -INFRARED
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EARTH ENERGY ABSORBED -20% BY PARTICLES -50% BY SURFACE REFLECTED
-25% BY PARTICLES AND CLOUDS -5% BY LAND AND SEA -GREENHOUSE GASES TRAP REFLECTED ENERGY BACK TO EARTH
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ENERGY TRANSFER RADIATION -SUN TO EARTH CONDUCTION -DIRECT CONTACT
CONVECTION -MOVEMENT OF PARTICLES -LATENT HEAT -SURFACE TO ATMOSPHERE
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CIRCULATING AIR AFFECTS WEATHER AND CLIMATE
-COLD AIR SINKS AND PUSHES WARM AIR UP -UNSTABLE THUNDERSTORMS -STABLE TEMPERATURE INVERSIONS
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AIR CURRENTS
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AIR CURRENTS GLOBAL WINDS -UNEQUAL HEATING OF EARTH GLOBAL WIND BELTS
-AFFECTED BY CORIOLIS EFFECT (EARTH’S ROTATION CAUSES WIND TO APPEAR TO MOVE) -TRADE WINDS -WESTERLIES -POLAR EASTERLIES -JET STREAMS
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AIR CURRENTS LOCAL WINDS -SEA BREEZE -LAND BREEZE
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REVIEW WHICH DOES NOT AFFECT GLOBAL WIND BELTS? A. AIR PRESSURE
B. LAND BREEZES C. CORIOLIS EFFECT D. SUN
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AIR QUALITY SOURCES -POINT SOURCE -SMOKESTACKS FROM FACTORIES
-NONPOINT SOURCE -LARGE CITY AIR POLLUTION
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AIR QUALITY CAUSES AND EFFECTS -ACID PRECIPIATION
-DAMAGES WATER SOURCES AND STONE STRUCTURES -SMOG -HARD TO SEE AND BREATHE
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MAINTAIN AIR QUALITY -CLEAN AIR ACT -MONITOR POLLUTION INDOOR AIR POLLUTION -SMOKING, CLEANING PRODUCTS, PESTICIDES, FIREPLACES, INSULATION, RADON
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