Erosion, Weathering and Transportation

Question 1

Traction

Answer 1

(T) large stones rolled along river floor by water as they are too large to float

Question 2

saltation

Answer 2

(T) transport for sediment in rivers. small rocks(too big to be carried) bounce along river bed

Question 3

suspension

Answer 3

(T) lighter sediment(silt) carried in water

Question 4

solution

Answer 4

(T) transport of dissolved chemicals

Question 5

attrition

Answer 5

(E) rocks that the sea is carrying knock against each other >break and become smaller and rounder

Question 6

Hydraulic action

Answer 6

(E) strong waves smash against cliffs and air becomes trapped in cracks > expand and break apart

Question 7

abrasion

Answer 7

pebbles grind along a rock platform(like sandpaper) and become smooth

Question 8

corrosion

Answer 8

certain types of cliff erode as a result of weak acids in the sea (eg limestone)

Question 9

Freeze-thaw

Answer 9

(W) water seeps into cracks of rock and freezes> expands and melts = big cracks

Question 10

chemical weathering

Answer 10

break down of rocks caused by a change of their chemical make-up

Question 11

biological weathering

Answer 11

breakdown of rocks by plants. roots burrow down and weaken structure until it breaks away

Question 12

mechanical/physical weathering

Answer 12

breakdown of rocks caused by acid rain, extreme temps and natural processes

Question 13

weathering definition=

Answer 13

breakdown of rocks/minerals by natural processes (chemical/biological/physical)

Question 14

erosion landforms

Answer 14

headlands, bays, caves, arches, stacks, stumps, cliffs, wave-cut platform/notch

Question 15

depositional landforms

Answer 15

sand dunes, salt marsh, bar, spit, beach