Exam And 100% Correct Answers
2025-2026 Updated.
active continental margin - Answer Found along a continental plate margin that is
convergent or lateral with an oceanic plate
-commonly sites of tectonic activity
-sites of active erosion & weathering
erosional coasts - Answer -do not have to be active margins
-drop in relative sea level
(either tectonic uplift (isostatic) or drop in atual sea level (eustatic)
-strong wave energy
-high relief
dominant feature of erosional coasts - Answer cliff
a cliff is produced by: - Answer -sea undercuts the cliff=
(hydraulic action, abrasion, salt weathering)
-rockfall, landslides
Abrasion - Answer wind that is carrying saltating sand can effectively "sound blast" rock
surfaces
-restricted to <1-2 m above the ground
rocks that have been abraded: - Answer -pitted, grooved or polished surface
-ventifacts
wave-cut platform - Answer a flat surface that stands slightly below water surface at high
tide
erosional remnants of cliffs include: - Answer sea stacks and arches
, marine terraces - Answer uplifted wave-cut platforms
what do tide pools form on? - Answer wave cut platforms
passive continental margin - Answer found along a continental plate margin that is not
experiencing active tectonic forces
-deposition of large amounts of sediment
(without tectonic forces, sediment can accumulate)
-wider continental shelf, low relief, and shallow water
depositional coasts - Answer -generally, passive margins
-high sediment input
-low wave energy
-gentle relief
dominant coastal feature - Answer beach
beach - Answer location along a coast where sediment is in motion (eroded, transported,
deposited by waves & currents)
beach ridge - Answer ridge on landward side; zone of coastal dunes, often vegetated
Berm - Answer horizontal surface formed by deposition of sediment during backwash;
produced by deposition on beach face; only inundated during storm surges
beach face - Answer sloping surface partially submerged during high tide; swash zone
longshore bar - Answer result of sediment transported offshore from beach face and berm
(Influence of waves)
low energy waves produce: - Answer -net deposition on beach face
-elongation of berm