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MHMS Weather LS2
MHMS Weather Watch Learning Set 2
| Term | Definition |
|---|---|
| thermal energy | the energy of motion of the particles of matter in a substance. |
| heat | the transfer of thermal energy from a warmer substance to a cooler one. |
| conduction | the transfer of heat through direct contact. |
| convection | the transfer of heat in a fluid (gas or liquid) by currents of warm, rising fluid and cool sinking fluid. |
| radiation | the transfer of energy by electromagnetic waves. |
| electromagnetic waves | a form of energy, such as light, ultraviolet rays, or infrared rays, that can travel through a vacuum. |
| solar energy | energy given off by the Sun that travels through space as electromagnetic waves and strikes Earth. |
| latitude | the measure of distance north or south of the Equator. |
| Equator | an imaginary line around the middle of Earth that is an equal distance from the North and South Poles. |
| axis | a line through the center of a body, around which the body rotates, or spins; Earth’s imaginary axis passes through the North and South Poles. |
| rotation | one complete turn of a planet around its axis. |
| revolution | the orbital motion of one body in space around another. Earth revolves around the Sun. |
| ellipse | a shape that is a squashed or flattened circle. |
| summer solstice | the day with the greatest number of daylight hours. |
| winter solstice | the day with the fewest number of daylight hours. |
| equinox | one of two days in the year when the number of daylight hours equals the number of nighttime hours everywhere on Earth. |
| specific heat capacity | The amount of heat energy required to raise the temperature of 1 gram of a substance by 1º Celsius. |