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Weather and Climate
Term | Definition |
---|---|
Climate | Average weather patterns in a particular area over a 30 year period |
Weather | The current conditions of the atmosphere over a short period of time |
Climate Change | Changes in long term averages of daily weather. |
El Nino | A climate pattern where the water in the Pacific Ocean near the equator gets hotter than usual and affects the atmosphere and weather around the world. Occurs every few years. |
La Nina | A climate pattern that describes the cooling of surface ocean waters along the tropical west coast of South America. |
Volcanic Eruptions | The discharge of steam and hot material from the inside the Earth, causing a cloud of dust to expand into the atmosphere, which causes temperatures in that area to cool until the dust settles due to blocked sunlight. |
Climate Variations | Factors that change earth's climate for a short period of time |
Temperature | The presence or absence of heat. |
Humidity | The amount of water that is present in the atmosphere. |
Precipitation | When rain, snow, sleet, or hail that falls to the ground. |
Atmospheric Pressure | The weight of air above a given area on Earth's surface. |
Air Mass | A body of air extending hundreds or thousands of miles upwards into the air and maintains the same conditions of temperature and humidity at all parts as it travels across regions of land and water. |
Fronts | A transition zone between two air masses. |
Cold Front | A warm-cold air boundary in which the heavier, colder air pushes under and replaces the lighter, warmer air. |
Warm Front | The boundary between warm and cool air when the warm air is replacing the cold air. |