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weather vocab
| Term | Definition |
|---|---|
| weather | the condition of earths atmosphere at a particular time and place |
| meteorologist | scientists who study the cause of weather and try to predict it |
| forecast | a prediction of what the weather will be in the future |
| temperature | the average of the amount of wate vapor in the air |
| relative humidity | a measure of the amount of water vapor in the air compared to the maxium amount the air can hold at that temperature |
| wind | the horizontal movement of air from an area of high pressure to an area of lower pressure |
| cumulus | clouds that form less than 2 kilometers above the ground and look like fluffy rounded piles of cotten |
| stratus | clouds that form in flat layers |
| cirrus | wispy feathery clouds made mostly of ice crystails that form at high levels above about 6 kilometers |
| thermometer | an insrtument ised to relitve humidity consisting of a thin glass tube with a bulb at one end that contains liquid |
| anemometer | an insrment used to measure wind speed |
| pyschrometer | an instrument used to relative humidity consisting of a wet bulb thermometr and a dry bulb thermometer |
| air mass | a huge body of air that has similar temperature pressure and humidity throughout |
| front | the aerea where air masses meet and do not mix |
| cold front | when cold air mass pushes against a warm air masses |
| warm front | when warm air masses pushes against cold air masses |
| tornado | a rapidly whirling funnel sheaped cloud that reaches down from a cloud to touch earth surfaces usullay leaving a destructive path |
| hurrican | a tropical storm that has winds of 119 kilometers per hour or higher typically about 600 kilometers across |