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Weather
Question | Answer |
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Weather | The condition of Earth's atmosphere at a particular time and place |
Meterologitsts | Scientists who study the causes of weather and try to predict it |
Forecast | A prediction of what the weather will be in the future |
Temperature | The average amount of energy of motion in the molecules of a substance |
Convection | The transfer of heat by movements of a fluid |
Humidity | A measure of the amount of water vapor in the air |
Relative Humidity | The percentage of water vapor in the air compared to the maximum 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 cotton |
Stratus | Clouds that form in flat layers |
Cirrus | Wispy, feathery clouds made mostly of ice crystals that form at high levels, above 6 kilometers |
Thermometer | An instrument used to measure temperature, consisting of a thin, glass tube with a bulb on one end that contains a liquid |
Anemometer | An instrument used to measure wind speed |
Psychrometer | An instrument used to measure relative humidity, consisting of a wet-bulb thermometer and a dry-bulb rhermometer |
Air mass | A huge body of air that has similar temperature, pressure, and humidity throughout. |
Front | The area where air masses meet and do not mix |
Cold front | When a cold air mass pushes against a warm air mass |
Warm front | When a warm air mass pushes against a cold air mass |
Tornado | A rapidly whirling, funnel-shaped cloud that reaches down from a storm cloud to touch the Earth's surface, usually leaves a destructive path |
Hurricane | A tropical storm that has winds of 119 km per hour or higher; typically about 600 km across |