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2. Weather
DDMS 7th grade - Chapter 3, sec. 2-4
| Question | Answer |
|---|---|
| Temperature | The measure of the average amount of energy in the particles of a substance |
| Thermometer | An instrument used for measuring temperature |
| Conduction | The transfer of thermal energy through two substances touching |
| Convection | The transfer of thermal energy by the movement of a fluid |
| Convection Currents | The upward movement of warmer fluid and the downward movement of a cooler fluid creating a circular motion |
| Wind | The horizontal movement of air from an area of high pressure to an area of low pressure |
| Anemometer | An instrument used to measure wind speed |
| Sea Breeze | A local wind that blows from the water to the land |
| Land Breeze | A local wind that blows from the land to the water |
| Jet Stream | Bands of high speed wind that occur about 10 Km above the Earth's Surface |
| Relative Humidity | The percentage of water vapor in the air, compared to the maximum amount that it can hold at a certain temperature |
| Psychrometer | An instrument used to measure the relative humidity |
| condensation | The process of the water vapor in the air becoming a liquid |
| Dew Point | The temperature at which condensation begins |
| Cirrus | Wispy, feathery looking clouds, that form at high levels in the atmosphere |
| Cumulus | Fluffy, round-looking clouds, that form less than 2 km from the ground |
| Stratus | Clouds that form in thin, flat layers |
| Precipitation | Any form of water that falls from the clouds and reaches the Earth's Surface |
| Rain Gauge | An instrument used to measure precipitation |
| Radiation | The direct transfer of energy by electromagnetic waves |