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Be a Weather Watcher

Be a Weather Watcher. Katina Peck 7 th Grade Science. Weather. What the outside air is like at a certain place and tim e . Weather can be described as: How hot or cold it is, How wet or dry it is, How many clouds are in the sky, and How windy it is. . Climate.

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Be a Weather Watcher

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  1. Be a Weather Watcher Katina Peck 7th Grade Science

  2. Weather • What the outside air is like at a certain place and time. • Weather can be described as: • How hot or cold it is, • How wet or dry it is, • How many clouds are in the sky, and • How windy it is.

  3. Climate • What the weather of a place is like over a long time. Just think how the weather is different for each season of the year. Lots of different things can affect what the climate is such as: • How much sunlight, wind and water a place gets, • Mountains, oceans and rivers that are in an area, • What the soil is like, and the kind of plants that are growing.

  4. Meteorologist • Scientists who study weather and climate are called meteorologists. • Meteorologists measure a lot of different things that make up the weather such as: • Precipitation • Wind • Temperature

  5. Precipitation • The amount of rain and/or snow that falls. Humidity • The amount of water in the air.

  6. Wind • Meteorologists study what direction the wind is coming from and how fast the wind is blowing.

  7. Temperature • The temperature of the air. • The temperature of the ground/soil. • The temperature of water (oceans and lakes).

  8. Technology • Satellites • Orbits Earth taking pictures of clouds from space. • Computers • Use data to create forecasts. • Barometers • Measures air pressure. • Thermometers • Measures temperature. • Rain gauges • Measures precipitation. • Anemometer • Measures wind speed. • Radar • Uses radio signals to determine where precipitation is falling and how fast clouds are moving.

  9. Air Pressure • Air pressure depends on the density of air, or how close together its molecules are. • Air lower in the atmosphere is more densethan air above, so air pressure down low is greater than air pressure higher up. • Temperature affects air pressure: • In cold air, the molecules are more closely packed together. • In warm air, the molecules are further apart. • Cold air is denser!!!

  10. Rising and Sinking of Air • Warm air is less dense, so it rises. • Cold air is denser, so it sinks.

  11. Wind • Wind often moves from areas where it’s colder to areas where it’s warmer. • The larger the temperature difference, the stronger the wind.

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