COMPREHENSIVE EXAM 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
◉ Outputs. Answer: e.g. sediment can be washed out to sea or deposited
further along the shore.
◉ Flows/Transfers. Answer: e.g. processes such as erosion, weathering,
transportation and deposition can move sediment within the system.
◉ Stores/Components. Answer: landforms such as beaches, dunes and
spits
◉ Negative Feedback. Answer: when the effects of an action are
cancelled out by its subsequent knock-on effects.
◉ Positive Feedback. Answer: when the effects of an action are
amplified or multiplied by subsequent knock-on effects (a loop/cycle).
◉ Sources of energy. Answer: - Wind
- Wave
- Tidal
,- Currents
◉ Wave Energy. Answer: - created by the frictional drag of the wind
over the water.
- effect of wave depends on height. height is determined by wind speed
and fetch of the wind.
- waves break as they approach the shore. Friction with the sea bed
slows the bottom of the waves.
Size of wave depends on 3 factors:
- Distance wave has travelled
- Time wind has been blowing
- Strength of the wind
◉ Wave height. Answer: height difference between a wave crest and the
neighbouring trough
◉ Wavelength. Answer: distance between successive crests
◉ Wave frequency. Answer: time between one crest and the following
crest passing a fixed point
, ◉ Constructive waves. Answer: - swash greater then backwash
- weak backwash, low-energy deposition
- form beaches
- long, not very high max 1m
- frequency 6-9/minute
- form in calm conditions with light winds
- leads to formation of ridges (berms)
◉ Destructive waves. Answer: - backwash greater than swash
- remove material from the beach
- erode the coastline
- 2-3m in height and steep
- frequency of 11-15/minute
- form in stormy conditions
- may form a ridge called a storm beach
◉ Wave refraction. Answer: Slowing and bending of progressive waves
in shallow water.
Energy dissipates in deeper waters, waves are a lot smaller and don't
slow down as much at the deeper bays.