Rivers and Coasts

Question 1

How does a river chagne the land it flows over? NAme the three processes that take place to shape the landscape around rivers and coasts

Answer 1

a river flows non stop day and night on its way to a sea, lake or another river. It flows downhill as fast as it can by the easiest route. As it flows the river changes the land it flows over. It wears it away i some places by lifting material from it and carrying git along and dropping it somewhere else. These processes are Erosion, Transportation and Deposition

Question 2

Rivers eroded in four ways what are they?

Answer 2

Hydraulic Action, Attrituion Abrasion, Solution

Question 3

What is Hydraulic Action

Answer 3

force of water into cracks in the bank. Over time this breaks the bank up

Question 4

What is Abrasion

Answer 4

rocks and stones and sand in the water act like sandpaper. They scrape the riverbed and banks and wear them away.

Question 5

What is Solution

Answer 5

acidic water dissolves minerals from the bed and banks and breaks them up.

Question 6

What is Attrition

Answer 6

River pushes rocks against each other making them smaller, smoother and more round

Question 7

Name four types of transportation taking place in a river

Answer 7

suspension, traction, solution , saltation

Question 8

What does erosion mean?

Answer 8

wearing away of rock or soil along the riverbanks and bed

Question 9

What is transportation?

Answer 9

river carries away the eroded material

Question 10

Name the 3 types of transportation

Answer 10

traction, saltation, Solution, suspension,

Question 11

what is solution (transportation)

Answer 11

minerals disolved in the water carried along

Question 12

what is suspension

Answer 12

sediment that floats with in the river flow

Question 13

what is traction?

Answer 13

large stones and rocks roll along along the river bed

Question 14

what is saltation?

Answer 14

bouncing smaller particles along the bed

Question 15

what is the course of a river?

Answer 15

source of the river, upperm, middle, lower and mouth

Question 16

what are bends in a river called? describe them

Answer 16

Meanders - erosion on the outside bend with deposition on the inside bend

Question 17

what is the name of the landform crated when the ben breaks it neck?

Answer 17

oxford lake

Question 18

decribe how a waterfal forms and creates a step sides gorge. Can you draw a diagram?

Answer 18

1. a river meets a band of softer less resistant rock 2. the rock causes abrasion of the river bed 3. the underlying softer rock is eroded awayc creating a notch 4. Hydraulic action makes the notch deeper creating plunge pool 5. process of erosion such as abrasion cause undercutting 6. more resistant rock is left unsupported and overhangs 7. more resistant work collapses into river bed 8. the process is repeated and the waterfall retreats upstream 9. a steep sided river valley is created called a gorge 10.

Question 19

Answer 19

Question 20

Answer 20

Question 21

Answer 21