6th Grade Ch. 4 Sec. 2 The Physics Of Bird Flight

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6th Grade Ch. 4 Sec. 2 The Physics Of Bird Flight

  1. 1. Ch. 4 Sec. 2 The Physics of Bird Flight
  2. 2. Why do birds fly south? <ul><li>Because it is too far to walk! </li></ul>
  3. 3. How Air Moves Across a Wing Air pressure caused by air molecules pushing Air moves faster across wing’s upper surface than its lower surface
  4. 4. The faster air moves, the less pressure it exerts.
  5. 5. How Air Moves Across a Wing Difference in pressure above & below bird’s wing produces upward force (lift) that causes wing to rise
  6. 6. lower higher
  7. 7. types of flight flapping soaring/ gliding diving uses a lot of wing movement & energy move upward on rising warm air currents Does not use lift Use falling currents of cool air To coast downward
  8. 8. Birds with different types of flight have wings that are shaped very differently. Many seabirds, like albatrosses and seagulls, have long, narrow pointed wings for gliding long distances over the ocean. Long, broad eagle wings have a large surface area for soaring on rising warm air currents. Short rounded wings allow pheasants rapid takeoffs, good maneuverability, and short glides. Similar to a high speed jet, swallows have relatively small, narrow, tapering wings.
  9. 9. <ul><li>Why do seagulls live in the sea? </li></ul>Because if they lived in the bay, they'd be bagels!!!
  10. 10. Built to Fly: How Birds Are Adapted for Flight video clip
  11. 11. What is North America's fastest bird? <ul><li>The Peregrine Falcon regularly attains speeds of about 40-60 miles per hour and has been clocked during its steep dives at 175 miles per hour! </li></ul>
  12. 12. What do you call two Peregrine falcons fighting over a pigeon? A squabble!!
  13. 13. What do you call two happy falcons? <ul><li>a Pair-of-Grins </li></ul>
  14. 14. This is so much easier than the old way!

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