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Air Pressure
| Question | Answer |
|---|---|
| What is pressure? | force per unit area |
| What is density? | the amount of mass per unit volume |
| What are some of the properties of air? | mass, density and pressure |
| What instrument is used to measure air pressure? | barometer |
| ___________ is the result of the weight of a column of air pushing down on an area | air pressure |
| Why does air pressure not crush objects? | the molecules in air push in all direction |
| If the storm is approaching, what happens to air pressure? | falling |
| if the weather is clearing, what does it usually mean to air pressure? | it rises |
| What are the two kinds of barometers? | mercury and aneroid |
| _________ consists of a glass tube opened at the bottom end and partially filled with mecury | mecury barometer |
| An __________ has an air tight metal chamber that is sensitive to changes in air pressure | aneroid barometer |
| What is altitude or elevation? | the distance above sea level |
| what happens to air pressure as altitude increases? | decrease |
| what happens to density as air pressure increase? | increase |
| what is the relationship between altitude and density? | directly proportional |
| what is the level of air pressure at sea level? | highest |
| what is the level of air pressure at top of mountains? | lowest |
| The _______ is a layer of gases that surrounds the planet and makes conditions on Earth suitable for living things | atmosphere |
| Earth's atmosphere is divided into several different atmospheric _____ extending from the Earth's surface outward with distinct characteristics | layers |
| What are the two most common gases in the atmosphere, and how much percent of the atmosphere do they cover? | 78% Nitrogen and 21% Oxygen |
| What are the four atmospheric layers? | Troposphere,Stratosphere,Mesosphere, and Thermosphere |
| Differences in _______ are what separates the layer above and/or below it | temperature |
| Which layer contains weather,life, and is closest to the Earth's surface? | The Troposphere |
| As altitude increases in the troposphere, what decreases? | Temperature decreases |
| _____ ____ and ______ _______ are two important gases in the troposphere to help make weather occur. | Water vapor and Carbon Dioxide |
| What are Trace gases? | These gases are unimportant and found in small amounts, <1%, throughout the layers of the atmosphere, for example: argon. |
| The __________ is located directly above the troposphere. | stratosphere |
| As you move up in the stratosphere, the air temperature _______ because of ozone which is a gas that absorbs solar radiation and releases it as heat. | increases |
| The ________ is located directly above the troposphere. | stratosphere |
| The stratosphere is ____ except in its upper region where ozone is located. | cold |
| What is the COLDEST layer in the atmosphere? | mesosphere |
| Meteoroids entering Earth’s atmosphere usually ___ __ in the mesosphere. | burns up |
| Above the mesosphere is the __________ | thermosphere |
| What layer is in the upper region of the thermosphere? | the Exosphere |
| Does the temperature increase or decrease in the troposphere? | It decreases |
| Where is air pressure greatest? | Air pressure is greatest near the surface of the Earth in the troposphere. |
| Energy from the Sun is known as _______ ______ | solar energy |
| Solar energy is a driving source of _________ and the circulation of the _________ in the Earth's atmosphere | Radiation,Convection |
| There is an unequal heating of the Earth's atmosphere that creates a difference in ___ ______. | air pressure |
| What happens when the Sun's energy is reflected by clouds or gases? | Not enough energy is absorbed by water to adjust the temperature range. |
| What is the greenhouse effect? | Solar energy that is absorbed by Earth’s land and water surfaces is changed to heat that moves/radiates back into the atmosphere (troposphere) where the heat cannot be transmitted through the atmosphere so it is trapped. |
Created by:
mystudystuck
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