coastal landforms

Question 1

what are rip currents

Answer 1

powerful underwater currents occur in areas close to shoreline on beaches

Question 2

what does the rate of erosion exceed at high energy coastline

Answer 2

exceeds deposition

Question 3

what are 3 characteristics of high energy coastlines

Answer 3

-usually have rocky headlands
-destructive waves
-occur where there is a large fetch

Question 4

what does the are the rates of erosion like at low energy coastlines

Answer 4

rates of deposition exceed rates of erosion

Question 5

name 2 characteristics of low energy coastlines

Answer 5

-more constructive waves
-have sandy areas

Question 6

what are constructive waves likely to form

Answer 6

form depositional land forms

Question 7

what are destructive waves likely to do

Answer 7

remove depositional land forms by erosion

Question 8

what do destructive waves do to the size of the beach

Answer 8

decrease it

Question 9

what do constructive waves do to the size of the beacg

Answer 9

increase it

Question 10

name the 4 characteristics of constructive waves

Answer 10

-long wavelength
-strong swash, weak back swash
-low frequency -> 6-8 per min
-low wave height

Question 11

name the 4 characteristics of destructive waves

Answer 11

-short wavelength
-strong back swash, weak swash
-10-14 per min
-high waves height

Question 12

which type of waves dominate in summer

Answer 12

constructive

Question 13

which type of waves dominate in winter

Answer 13

destructive