1. How do concordant coast formed?
a- due to the orientation of the rock strata.
b- different rock strata lie parallel and erode differently
c- It's a band of hard rock that protects the coast.


2. Sea cliffs are formed when waves strike vigorously against a steep coast.
a- true
b- False


3. Waves can erode the coast in various ways.
a - Corrasion or abrasion
b- attrition
c- Hydraulic action
corrosion
d- all of the above


4. Rocks that offer the same degree of resistance to erosion are called 'homogeneous' rocks.
a- true
b- false


5. 'Headlands' are formed due to:
a - Differential erosion
b- Where the coast consists of alternating bands of hard and soft rocks.
c- due to rising sea levels.


6. How can a headland be damaged by the action of waves?
a- the headlands contain cracks or openings, and water can erode it into a wave-cut cliff
b- If the headland is worn away by the water, dangerous rip currents can occur.
c- If the headland contains cracks or openings, water can dislodge land and pieces of rocks.
d- If the headland is worm away by the water, chunks of rocks can fall from above and injure people.


7. Bay are formed due to differential erosion similar to headlands.
a- true
b- False


8. If you look at a photo of a beach from 1960 and the same area today, you would notice a striking difference in the shoreline. What is the most likely cause of these changes?
a- Storm surges that occur following hurricanes.
b- Coastal erosion from natural causes.
c- periods of heavy rain during summer months
d- Human activities and development



9. Constructive waves are: 7 or more waves per minute.
a- true
b- False



10. Descructive waves are 12 - 14 per minute.
a- true
b- False​