1. Class 30: Tides, Waves, Tsunamis, Beaches

2. Today’s topics: Tides Wave features Beaches & Coastlines Tsunamis Class Updates Reading: 16.3-16.4; 16.6-16.8 Homework #5 posted, due Wed. 4/30 Final Exam: Mon. May 5th @ 10am Class 30: Tides, Waves, Tsunamis, Beaches

3. Ocean Tides - What Causes Them?

4. Ocean Tides From Gravity F ~ M / R 2 F = force M = mass R = radius

5. Tidal Pulls: Moon vs. Sun Which exerts a greater pull - Moon or Sun?

6. Daily Tides from the Moon

7. Monthly Tides: Moon Phases & Sun

8. Extreme Tides low tide high tide Bay of Fundy (Nova Scotia, Canada)

9. Which statement is most correct about spring tides? a. They occur in the spring. b. They occur when the sun, the moon and the Earth all fall on a straight line c. They are the largest high tides on Earth d. Both statements b and c are true.

10. a. Yes, and they would be much LARGER b. Yes, but they would be much SMALLER c. No, we would not have tides d. Maybe, it depends on the season If Earth didn’t have a moon, would we still have tides?

11. Sea Waves 1 2 3 4

12. Circular Motion of Water

13. Types of Waves

14. Sediment Transport Along Coastlines

15. Beaches

16. Rocky Coastlines cliffs plaforms

17. Sandy Coastlines Barrier Islands

18. Tsunamis Banda Aceh, Sumatra, Indonesia December 26, 2004 Magnitude 9.3

19. Tsunamis Underwater fault 1. BIG earthquake 2. Tsunami generated 3.

20. Tsunami Animation

21. Tsunami Example: Sumatra

22. Tsunami Example: Alaska

23. Review: Ocean in Motion