Rivers

Question 1

What is meant by the term erosion

Answer 1

Material being broken or worn away

Question 2

What is meant by the term transportation

Answer 2

Material being moved from one part of the river to another

Question 3

What is meant by the term deposition

Answer 3

Material being carried and dropped

Question 4

What is meant by the term hydraulic action

Answer 4

Sheer force of the watereroding the river bed and banks

Question 5

What is meant by the term abrasion

Answer 5

Stones + sediment being dragged and scraped along the bed like sand paper

Question 6

What is meant by the term solution

Answer 6

Weak acids and water reaching with rocks

Question 7

What is meant by the term attrition

Answer 7

Stones and sediment hitting each other and breaking down

Question 8

Factors effecting flood risk

Answer 8

Precipitation
geology

Question 9

Soft engineering strategies for river management

Answer 9

Floodplain
river catchment
preparation

Question 10

Hard engineering strategies for river management

Answer 10

Dam
channel straightening
embankments

Question 11

Where is bostcastle

Answer 11

Small village
30km north west from Plymouth

Question 12

When was bostcastle flooded

Answer 12

Monday 16th August 2004

Question 13

Factors which affected bostcastle flooding

Answer 13

Clay soil
impermeable rock
5 hours rain
3cm per hour
Months rain in 2 hours

Question 14

Primary effects of bostcastle flood

Answer 14

Buildings destroyed
cars washed away

Question 15

Primary responses of bostcastle flood

Answer 15

120 rescued
6 casualties
7helicopters

Question 16

Secondary effects and responses os bostcastle flood

Answer 16

Businesses and jobs lost
Homes lost
10 million pounds restoration
4.5 million pound on flood defences