200 - PowerPoint PPT Presentation

Jims
slide1 l.
Skip this Video
Loading SlideShow in 5 Seconds..
200 PowerPoint Presentation
play fullscreen
1 / 51
Download Presentation
200
487 Views
Download Presentation

200

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Rip Current Statistics Principal Reasons People Die In A Rip Current Rip Current Formation Types of Rip Currents Rip Currents Safety 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500

  2. Rip Current Statistics T/F - Around 100 people die in rip currents each year in the United States

  3. True

  4. Rip Current Statistics T/F –Which state has the most rip current deaths a. Florida b. California c. Carolinas d. All of the above

  5. A. Florida

  6. Rip Current Statistics T/F - Rip currents also kill people in the Great Lakes.

  7. True

  8. Rip Currents Statistics T/ F What are the chances of drowning at a beach protected by lifeguards affiliated with the United States Lifesaving Association (USLA)? • One in 2 million • One in 18 million • One in 23 million • One in 50 million

  9. B. One in 18 million

  10. Rip Currents Rip currents account for over ___% of rescues performed by surf beach lifeguards. • 20 % • 30% • 70% • 80%

  11. D. 80%

  12. Rip Current Formation Deceiving, it looks like a nice calm area:

  13. An area of deeper water where waves don’t break

  14. Rip Current Formation What is the correct sequence of rip current formation? • Wave travels to the beach, waves break on sandbars, water runs off beach through a channel. B. Waves break on sandbars, wave travels to the beach, water runs off beach through a channel. C. Water runs off beach through a channel, wave travels to the beach, waves break on sandbars. D. None of the above.

  15. B. Waves break on sandbars, wave travels to the beach, water runs off beach through a channel.

  16. Rip Current Formation The longer the period between waves: a. The more energy in the the waves. b. The faster the waves move. c. The more momentum the waves carry. d. A and B e. A,B, and C

  17. E. a, b, and c

  18. Rip Current Formation __________ is proportional to amplitude or height squared

  19. Wave energy

  20. Rip Current Formation When do rip currents become most dangerous? a. During high surf conditions as the wave height and wave period increase. b. During low surf conditions as the wave height and wave period decrease. c.During high surf conditions as the wave height and wave period decrease. d. During low surf conditions as the wave height and wave period increase.

  21. a. During high surf conditions as the wave height and wave period increase.

  22. Types of Rip Currents • This type of rip current is short in duration (less than 10 minutes) • Enhanced by large swells with more wave energy and volume. • Unpredictable temporary conditions and variable locations.

  23. What is a Flash Rip Current?

  24. Types of Rip Currents • This type of rip current develops along jetties, piers, and groins.

  25. What is a Permanent rip current?

  26. Types of Rip Currents • This type of rip current is dependent upon shape of coast, bays, points, reefs or sand bars.

  27. What is a Fixed rip current?

  28. Types of Rip Currents • This type of rip current occurs with long shore (parallel to beach) current. • Pushes rip away from original location and weakens it.

  29. What is a Traveling rip current?

  30. Types of Rip Currents A long shore current may push swimmer into: • Flash rip current • Permanent rip current • Fixed rip current • All of the above

  31. D. All of the above

  32. Rip Currents Safety T/F Rip currents do not pull people under the water—they pull people away from the shore.

  33. True

  34. Rip Currents Safety T/F Undertow and riptides are the same as rip currents.

  35. False

  36. Rip Currents Safety T/F Rip currents only occur on beaches near the ocean.

  37. False, they also occur in the Great Lakes.

  38. Rip Currents Safety T/F Rip Currents can be very narrow or more than 50 yards wide.

  39. True

  40. Rip Currents Safety T/F Rip currents do not affect strong swimmers/Olympic swimmers.

  41. False

  42. Principal reasons people die in a rip current T/F Poor swimmers

  43. True

  44. Principal reasons people die in a rip current T/F Unaware of hazardous conditions

  45. Truealways check with the lifeguard on duty and learn about rip currents at www.ripcurrents.noaa.gov before going to the beach or Great Lakes area

  46. Principal reasons people die in a rip current T/F Intoxicated

  47. True

  48. Principle reasons people die in a rip current T/F No flotation device

  49. True

  50. Principal reasons people die in a rip current T/F Panic and swim directly toward shore against the rip current, become exhausted and drown