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Vocab. Weather
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Term | Definition |
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Weather | the condition of Earth's atmosphere at a particular time and place |
meteorologist | a scientist who studies the cause of weather and try to predict it |
forecast | a prediction of what weather will be in the future |
temp. | the average amount of energy of motion in the molecules in a substance |
convection | the transfer of heat by movements of a liquid |
`humidity | a measure of the amount of water vapor in the air |
relative humility | the % of water vapor in the air compared to the amount it can hold at that temp. |
wind | the movement of air from an area of high pressure to an area of lower pressure ` |
cumulus | clouds that form less than 2 km above the ground and look like fluff rounded piles of cotton |
stratus | a cloud that form in flat layers |
cirrus | wispy feathery clouds made mostly made of ice crystals that form above 6 km high |
thermometer | used to measure heat and is a class tube with a bulb that contains liquid |
anemometer | measures wind speed |
psychrometer | measures retaliative humidity |
air mass | huge body of air the has similar temps. pressures and humidity |
front | the area where air masses meet and do not mix |
cold front | when cold air mass push against a warm air mass |
warm front | when warm air pushes against a cold air mass |
tornado | a rapidly whirling funnel shaped cloud that reaches down from a storm cloud to touch Earth's surface leaving a destructive path |
hurricane | a tropical storm that has winds that are 119 kph or higher typically about 600 km across |