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The Atmosphere
Review of chapter 1
| Question | Answer |
|---|---|
| The condition of Earth's atmosphere at a particular time and place. | Weather |
| An envelope of gases that surround a planet. | Atmosphere |
| This is the most abundant gas in Earth's atmosphere. | Nitrogen |
| This gas makes up 21% of Earth's atmosphere. | Oxygen |
| This is a form of oxygen that has three oxygen atoms. | Ozone |
| __________________________ is water in the form of the gas. | Water vapor |
| The amount of mass in a given volume of air. | Density |
| The force pushing on an area or surface. | Pressure |
| The result of the weight of a column of air pushing down on an area. | Air pressure |
| An instrument that is used to measure air pressure. | Barometer |
| The elevation, or distance above sea level. | Altitude |
| The lowest layer of the atmosphere. | Troposphere |
| The ___________________ extends from the top of the troposphere to about 50 kilometers above Earth's surface. | Stratosphere |
| Above the stratosphere, a drop in temperature marks the beginning of the next layer, the _________________________. | Mesosphere |
| The outermost layer of Earth's atmosphere is the ______________________________. | Thermosphere |
| The atmosphere contains oxygen and other _____________ that you and other living things need to survive. | Gases |
| The atmosphere traps energy from the __________, and therefore keeps most of Earth's surface warm enough for water to exist as a liquid. | Sun |
| Because air has mass, it also has other properties, including ________________ and __________________. | Density and pressure |
| Air pressure _______________________ as altitude increases. | Decreases |
| Air density _______________________ as altitude increases. | Decreases |
| At sea level, the percentage of nitrogen is 78% and oxygen is 21%. What happens to the percentage of both as you increase your altitude? | They both stay the same. |
| Why is it hard to breathe at the top of a mountain? | The air is less dense a a high altitude, three are fewer oxygen molecules to breathe in each cubic meter of air than at sea level. |
| The order of the layers of the atmosphere from bottom to top | Troposphere, Stratosphere, Mesosphere, Thermosphere, Ionosphere, Exosphere |
| The layer of the atmosphere is where meteoroids burn up. | Meteoroids |
| This is the hottest layer of the atmosphere. | Thermosphere |
| Weather occurs in this layer of the atmosphere. | Troposphere |
| The ozone layer is found in this layer of the atmosphere. | Stratosphere |
| Scientists divide Earth's atmosphere according to changes in _______________________. | Temperature |
| The __________________ protects living things from dangerous ultraviolet radiation from the Sun. | Ozone Layer |
Created by:
larissa1003
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