6 river landscapes

Question 1

what is a course

Answer 1

it shows the path of the river in different stages

Question 2

describe the three stages of a river course

Answer 2

“upper- narrow and forms v shaped valleys
middle- gently begins to slope
lower- wide “

Question 3

what does a long profile show you

Answer 3

how the river changes over a gradient

Question 4

what does the cross profile show you

Answer 4

the cross section of the river

Question 5

what are the four type of erosion

Answer 5

attrition, abrasion, hydraulic power and solution

Question 6

what are the four types of transportation

Answer 6

what are the four types of transportation

Question 7

when does deposition take place in a river

Answer 7

in the lower and middle courses

Question 8

where are waterfalls and gorges found in a river

Answer 8

in the upper course

Question 9

explain the process of how waterfalls and gorges form

Answer 9

river flows over an area of hard rock and soft rock. soft rock gets eroded
faster than the hard rock. this collapses forming a water fall. the hard rock
then eventually get eroded which collapses onto the soft rock which get
destroyed forming a plunge pool.

Question 10

what are meander formed by and where are they found in the river

Answer 10

middle and lower course of the river. erosion and deposition

Question 11

what happens on the outside of a bend in a meander

Answer 11

river hits it with more energy and intensity because its deeper there. so it erodes

Question 12

what happens on the inside bend of a meander

Answer 12

river hits it with less energy and less intensity because its shallower there so it deposits

Question 13

describe the cross section of a meander

Answer 13

shallow at the inside bend and deep at the outside bend

Question 14

what is a flood plain

Answer 14

a large land surface at risk of flooding

Question 15

what happens to material during a flood

Answer 15

it gets deposited across the flood plain

Question 16

how are levees formed

Answer 16

heavy material from the river constantly gets deposited in the immediate land by it,
causing material to build up there causing a levee

Question 17

what is river discharge

Answer 17

the amount of water flowing through a river per second

Question 18

how do you find lag time on a hydrograph

Answer 18

find the time between peak rainfall and peak discharge

Question 19

three physical factors that effect flood risk

Answer 19

geology, rainfall and prolonged rainfall

Question 20

A human factor that affects flood risk

Answer 20

building made on the flood plain without flood resistant materials

Question 21

two hard engineering strategies that prevent floods, with pros and cons

Answer 21

dam- controls the flow of water and the speed and where it goes but it is expensive
and ugly and likely to move residents away
channel straightening- river moves through the area quicker but a flood could happen
further down the line”

Question 22

two soft engineering strategies that prevent flood risk with pros and cons

Answer 22

flood warnings. tree plantation

Question 23

how was the river severn eroded

Answer 23

hydraulic power abrasion and attrition

Question 24

where in the river severn did the first landform take place

Answer 24

gorge in the upper course

Question 25

where in the river severn did the second landform take place

Answer 25

meander in the lower course

Question 26

why was flood management needed in bostcastle

Answer 26

there was a massive flood in 2004

Question 27

what did they implement in bostcastle

Answer 27

they widened the channel. deepened the channel and moved the car park higher up

Question 28

social, economic and environmental impact of flood defences in Bostcastle

Answer 28

habitats were destroyed in the deepening/widening of the channel. cost a lot.