coasts

HideShow resource information
  • Created by: siobhan
  • Created on: 01-04-14 20:28
What causes waves?
Wind causing frictional drag across the surface of the water
1 of 16
What is the fetch?
The distance across which a wave travels
2 of 16
What factors influence the power of a wave?
Length of the fetch, strength of the wind,duration of the wind
3 of 16
What is wave frequency?
The number of waves per minute
4 of 16
what is the waver period?
time taken for one wave to pass a given point
5 of 16
what are the features of a constructive wave?
Strong swash- focus of energy is horizontal, weak backwash- wave energy is gone, shallow wide sandy beaches, longer wave length, shorter wave height
6 of 16
what are the features of a destructive wave?
focus of swash is vertical- scours the beach, strong backwash- removes sediment, shorter wavelength, greater wave height, steep shingle/pebble beaches
7 of 16
What is wave refraction?
a bending of the wave crest to fit the coastline
8 of 16
What is a sediment cell
a length of coastline in which sediment is transferred
9 of 16
name sources of sediment in a sediment cell
erosion of headlands/cliffs, alluvial input from rivers
10 of 16
name sediment sink in a sediment cell
beaches, bars, spits, salt marshes, off-shore bars, sand dunes
11 of 16
What are tides?
regular changes in sea level that occur over a 24 hour period
12 of 16
What causes tides?
the gravitational pull of the moon, the sun, and the earth spinning on its axis
13 of 16
name the types of tide in order of height, highest first
spring high tide, mean high tide, neap high tide, neap low tide, mean low tide, spring low tide
14 of 16
what is mean tidal range?
the mean difference in sea level between mean high tide and mean low tide
15 of 16
what is the maximum tidal range?
the difference between spring high tide and spring low tide
16 of 16

Other cards in this set

Card 2

Front

What is the fetch?

Back

The distance across which a wave travels

Card 3

Front

What factors influence the power of a wave?

Back

Preview of the front of card 3

Card 4

Front

What is wave frequency?

Back

Preview of the front of card 4

Card 5

Front

what is the waver period?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Geography resources:

See all Geography resources »See all Coastal environments resources »