COASTS - A-LEVEL GEOGRAPHY QUESTIONS &
DETAILED ANSWERS PASSED 100%
1. Define a negative feedback loop Changes are met with responses that restore
the balance back to the original state - e.g
the carbon cycle
2. Define a positive feedback loop One change from the original state that
triggers
continuous problems, and cannot restore itself -
e.g cliff erosion
3. What is the wave crest? Highest point of the wave
4. What is the wave trough? Lowest point of the wave
5. What is the wavelength or amplitude? Distance between one crest/trough to
the next
6. How is the wave height measured? Distance from trough to crest
7. What is the wave fetch? Distance of open water over which the wave
has passed, being uninterrupted by
obstacles
1/
68
,COASTS - A-LEVEL GEOGRAPHY QUESTIONS &
DETAILED ANSWERS PASSED 100%
8. What is the maximum fetch? Distance from one coastline to the next land-
mass. Often corresponds with the
prevailing wind direction
2/
68
,COASTS - A-LEVEL GEOGRAPHY QUESTIONS &
DETAILED ANSWERS PASSED 100%
9. What is the direction of South-West
prevailing winds in the UK?
10. How are tides caused? gravitational pull of the sun and moon,
happen-ing twice a day
11. When does maximum high tide occur? When the moon and sun are in line
12. What three points is wave energy Wind force and direction
con-trolled by? Duration of wind
Fetch size
13. How are waves formed? Wind blows over the surface of the water,
creat-ing drag and gaining grip, with the
friction caus-ing disturbance and forming
waves as a result
14. Why don't objects travel forward in wa- Because waves have an orbital
movement, and
ter? instead causes an up and down movement
known as the swell
15. What happens when waves reachThe movement is slowed by friction with the
shal-lower water? seabed, the wave increases in height due to
the rising seabed level, becoming taller and
thinner, eventually breaking and moving
16. The water comes up the beach objects with it
as
Swash, Backwash
, and returns as
17. Give features of a constructive waveDeposit material, building gently sloping
beach-
3/
68
,COASTS - A-LEVEL GEOGRAPHY QUESTIONS &
DETAILED ANSWERS PASSED 100%
es
Created in calm weather
Strong swash, weak
backwash Low frequency
(6-8 per min)
4/
68
DETAILED ANSWERS PASSED 100%
1. Define a negative feedback loop Changes are met with responses that restore
the balance back to the original state - e.g
the carbon cycle
2. Define a positive feedback loop One change from the original state that
triggers
continuous problems, and cannot restore itself -
e.g cliff erosion
3. What is the wave crest? Highest point of the wave
4. What is the wave trough? Lowest point of the wave
5. What is the wavelength or amplitude? Distance between one crest/trough to
the next
6. How is the wave height measured? Distance from trough to crest
7. What is the wave fetch? Distance of open water over which the wave
has passed, being uninterrupted by
obstacles
1/
68
,COASTS - A-LEVEL GEOGRAPHY QUESTIONS &
DETAILED ANSWERS PASSED 100%
8. What is the maximum fetch? Distance from one coastline to the next land-
mass. Often corresponds with the
prevailing wind direction
2/
68
,COASTS - A-LEVEL GEOGRAPHY QUESTIONS &
DETAILED ANSWERS PASSED 100%
9. What is the direction of South-West
prevailing winds in the UK?
10. How are tides caused? gravitational pull of the sun and moon,
happen-ing twice a day
11. When does maximum high tide occur? When the moon and sun are in line
12. What three points is wave energy Wind force and direction
con-trolled by? Duration of wind
Fetch size
13. How are waves formed? Wind blows over the surface of the water,
creat-ing drag and gaining grip, with the
friction caus-ing disturbance and forming
waves as a result
14. Why don't objects travel forward in wa- Because waves have an orbital
movement, and
ter? instead causes an up and down movement
known as the swell
15. What happens when waves reachThe movement is slowed by friction with the
shal-lower water? seabed, the wave increases in height due to
the rising seabed level, becoming taller and
thinner, eventually breaking and moving
16. The water comes up the beach objects with it
as
Swash, Backwash
, and returns as
17. Give features of a constructive waveDeposit material, building gently sloping
beach-
3/
68
,COASTS - A-LEVEL GEOGRAPHY QUESTIONS &
DETAILED ANSWERS PASSED 100%
es
Created in calm weather
Strong swash, weak
backwash Low frequency
(6-8 per min)
4/
68
