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Stack #52001
Weather and storms Vocabulary
| Question | Answer |
|---|---|
| Weather | the state of the atmosphere at a specific time and place. |
| WInd | results when air moves from regions of high pressure to low pressure |
| Wind vane | has an arrow that points in the direction from which the wind is blowing |
| anemometer | used to measure wind speed |
| humidity | amount of water vapor present in the air |
| Relative Humidity | a measure of the amount of water vapor present in the air compared to the amount needed for saturation at a specific temperature |
| Dew Point | The temperature at which air is saturated and condensation forms |
| fog | a low, stratus cloud formed near the ground |
| strato- | refers to clouds at low elevations |
| cirro- | describes the height of the cloud base |
| alto- | describes middle-elevation clouds |
| Cumulus clouds | masses of puffy, white clouds, often with flat bases |
| Cirrus clouds | appear fibrous or curly |
| Stratus clouds | usually form at low altitudes and may be associated with fair weather or rain or snow |
| precipitation | water falling from clouds in the form of rain, snow, sleet or hail |
| 4 precipitation types | rain, snow, sleet, hail |
| air mass | a large body of air that has properties similar to the part of Earth's surfact over which it develops |
| front | a boundary between two air masses of different density, moisture, or temperature |
| cold front | when colder air advances toward warm air |
| warm front | when lighter, warmer air advances over heavier, colder air |
| Occluded front | When a cold air mass moves toward cool air with warm air between the two. |
| tornado | a violently rotating column of air in contact with the ground. |
| The Fujita scale | ranks tornadoes according to how much damage they cause |
| Hurricanes | a large, swirling, low pressure system that forms over the warm Atlantic ocean. Must have winds over 119 km/h |
| Typhoon | similar to a hurricane only found in the Pacific Ocean |
| Cyclone | Similar to a hurricane, only found in the Indian Ocean |
| blizzard | if winds are 56 km/h, the temperature is low, the visibility is less than 400 m in falling or blowing snow, and if these conditions persist for 3 hours or more |
| meterologist | a person who studies the weather |
| station model | data from Earth's surface that is recorded on a map using a combination of symbols |
| isotherm | a line thta connects points of equal temperature |
| isobar | a line drawn to connect points of equal atomospheric pressure. You can tell how fast wind is blowing by looking at how close or spread out the isobars are |
| What causes the weather? | the interaction of air, water, and the sun |
| precipitation and storms occur where? | at fronts |
| When is a "warning" issued? | when severe weather conditions already exist |
| When is a "watch" issued? | when the conditions are right for severe weather to occur in the near future |
| sleet | forms when raindrops pass through a layer of freezing air near Earth's surface, forming ice pellets |
| Snow | forms when the air temperature is below freezing and water vapor changes directly to a solid |
| How do clouds form? | as warm air rises, expands, cools, and becomes satureated, and then water vapor condenses into tiny drops, which collect |
Created by:
sarahschmidt
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