PD 7 Group 2

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PD 7 Group 2

  1. 1. GROUP #3
  2. 2. CIRRUS CLOUDS <ul><li>High, feathery, and made of crystals; sometimes called “mares’ tails” </li></ul><ul><li>High-level; more that 6,000 m (about 20,000 ft.) Above Earth’s surface </li></ul><ul><li>Usually means fair weather on the day observed. May appear a day or two before a change in the weather </li></ul>
  3. 3. CUMULUS CLOUDS <ul><li>Heaped, puffy, white (resembles cauliflower)With flat bottom </li></ul><ul><li>Mid-level; more than 2,000- 6,000m (about 6,500- 20,000 ft) above Earth’s surface </li></ul><ul><li>“ Fair weather” clouds; weather will probably stay warm and dry </li></ul>
  4. 4. STRATUS CLOUDS <ul><li>Flat, gray, layered clouds that cover the whole sky. An example is FOG </li></ul><ul><li>Low-Level; less than 2,000m (about 6,500ft) above Earth’s surface </li></ul><ul><li>Rain or drizzle is likely </li></ul><ul><li>Assemble like waves </li></ul>
  5. 5. CUMULONIMBUS CLOUDS <ul><li>Huge, vertical, cumulus cloud with a dark lower portion that may produce hail </li></ul><ul><li>A tall cloud that can stretch from 2,000- 6,000m (about 6,500- 20,000ft) or more above Earth’s surface </li></ul><ul><li>Produces thunderstorms; also called “thunderheads” </li></ul>
  6. 6. NIMBOSTRATUS CLOUDS <ul><li>Low, gray, stratus clouds; can block out the sun, darkening the sky </li></ul><ul><li>Low-level; less than 2,000m (about 6,500ft) above Earth’s surface </li></ul><ul><li>Brings rain or snow </li></ul>
  7. 7. MANFACTURED AIRPLANE CONTRAILS <ul><li>High-altitude, white streaks created by jets; these cirrus-like clouds form when water vapor from a plane’s exhaust freezes into ice crystals </li></ul><ul><li>6,000- 12,000m (about 20,000-40,000ft) above Earth’s surface </li></ul><ul><li>If they vanish quickly, the weather may be good. When they linger, a storm may be coming </li></ul>

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