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Ch 16 Weather Section 1


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Ch 16 Weather Section 1

  1. 1. Ch 16 Weather Mrs. Harsh Section 1
  2. 2. Weather <ul><li>The condition of the atmosphere at a certain time and place. </li></ul><ul><ul><li>The condition of the atmosphere is affected by the amount of water in the air. </li></ul></ul>
  3. 3. Water Cycle <ul><li>Water in liquid, solid, and gaseous states is constantly being recycled through the water cycle. </li></ul><ul><li>Water cycle is the continuous movement of water from sources on the earth’s surface. </li></ul>
  4. 4. Humidity <ul><li>As water evaporates, it becomes water vapor or moisture in the air. </li></ul><ul><li>The amount of water vapor in the air is called Humidity. </li></ul><ul><li>The air’s ability to hold water changes as the temperature changes. </li></ul><ul><li>As temp , the air’s ability to hold water vapor also . </li></ul>
  5. 5. Condensation <ul><li>The process by which a gas, such as water vapor, becomes a liquid. </li></ul><ul><li>Condensation cannot occur until the air is saturated which means it is holding the maximum amount of water at a specific temperature. </li></ul><ul><li>Occurs when saturated air cools. </li></ul>
  6. 7. Clouds: <ul><li>A collection of millions of tiny water droplets or ice crystals. </li></ul><ul><li>Form as warm air rises and cools. </li></ul><ul><li>When the air cools, it becomes saturated. </li></ul><ul><ul><li>Water vapor changes to a liquid or a solid, depending on air temp. </li></ul></ul><ul><ul><ul><li>Below freezing, water vapor changes to ice crystals. </li></ul></ul></ul>
  7. 8. Cumulus Clouds <ul><li>Puffy white clouds that tend to have flat bottoms. </li></ul><ul><li>Form when warm air rises. </li></ul><ul><li>Generally indicate fair weather. </li></ul><ul><ul><li>When these clouds get larger, they produce thuder storms (cumulonimbus clouds). </li></ul></ul>
  8. 9. Cirrus Clouds <ul><li>Thin, feathery white clouds found at high altitudes. </li></ul><ul><li>Form when the wind is strong </li></ul><ul><li>If they get thicker, they indicate that a change in the weather is coming. </li></ul>
  9. 10. Clouds and Altitude <ul><li>Clouds are also classified by the altitude at which they form. </li></ul>
  10. 11. Precipitation
  11. 12. Precipitation