1. Spring Tides
Tides have the greatest tidal range due to alignment of the Earth-moon-sun system.

2. Neap Tide Occurs during 1st and 3rd quarter moons.
Gravitation pull of sun and moon slightly cancel each other out.
Produces the lowest tidal range.

3. Spring & Neat Tides Both Spring & neap tide occur twice a month.
Largest tidal range in the World- Bay of Fundy
Nova Scotia, Canada

4. Beach Erosion Do you recall, what is erosion? Causes of beach erosion
Waves
Wind
Storms

5. Beach Erosion - Solutions
Groin or Jetty
Seawall
Beach (Re) nourishment

6. Groin or Jetty

7. Groin or Jetty
Structures that protrude into ocean perpendicular to the coast.
Pros: Stops longshore drift from carrying sand away from a localized area of beach.
Cons: Causes depletion of sand on the downside of the structure.

8. Seawall

9. Seawall An upright wall that runs parallel along the coast.
Pros: Intended to protect land from wave erosion.
Cons: Causes severe erosion of the beach in front of it.

10. Beach (Re)nourishment