G102/202

Objectives:  Shorelines

 

1)   What is a tidal current and know what is meant by flood currents, slack water, ebb currents and tidal flats

 

2)  What is the ultimate cause of a wave?

 

3)   What controls the size, period and speed of a wave?

 

4)   What is fetch?

 

5)   Understand how deep ocean waves are different that near shore waves and be able to distinguish which would have oscillatory motion and which would have translational motion.

 

6)  Know what the terms swash and backwash refer to.

 

7)   What is longshore current and longshore drift?

 

8)  What is wave refraction and how does it promote the longshore current and drift?

 

9)    Understand how the size of the continental shelf can help control the amount of erosion that occurs at beaches

 

10)  The amount of erosion that occurs on beaches is dependent on what factors?

 

11)  Know what the following features are, if they are created by erosion or deposition and what processes created them.

      Spits                                                           Headlands

      Baymouth bars                                           Sea Caves

      Tombolos                                                   Sea Arches

      Sea Stacks                                                

 

12)  Understand the progression from the development of headlands to a sea stack

 

13)  What is a wave cut platform?

 

14)  Know what each of the following are and how they are used to stop beach erosion

      Breakwaters                                               Seawalls

      Groins and Jetties                                       Beach nourishment

 

15)  What is a Barrier Island and how does it form

 

16)  Know the difference between an emergent coast and a submergent coast, what causes each to form and be able to give an example of each.