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Chapter 15
Section 1 Characteristics of the Atmosphere
| Question | Answer |
|---|---|
| What are the 3 physical states of water in the atmosphere? | water droplets (liquid), snow and ice crystals (solid), and water vapor (gas). |
| How is the atmosphere held around the earth? | By gravity. |
| Where is air pressure the strongest? | At the earth's surface. |
| As altitude increases, air pressure ______________. | Decreases. |
| Which layer of the atmosphere is closed to the earth, is the densest layer containing 90% of the atmosphere's total mass, and almost all of the water vapor, clouds, pollution, weather and life forms exist here? | Troposphere. |
| Which layer of the atmosphere are layered, air is thin, contains little moisture, and the ozone layer is found here? | Stratosphere |
| The __________________________ protects life on Earth by absorbing harmful ultraviolet rays and warming . | Ozone layer. |
| Which layer is considered the middle layer of the atmosphere and is the coldest layer? | Mesosphere. |
| Which layer is the uppermost atmospheric layer with hot temperatures but does not feel hot? | Thermosphere. |
| What are electrically charged particles called? | Ions. |
| Ions are found in the ionosphere. Where is the ionosphere located? | Thermosphere. |
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