Rivers

Question 1

How is a meander formed

Answer 1

The flow on one side of the river is faster on the outside of a bend so this area is eroded and be uses of this silt is dropped off on the inside bend

Question 2

What’s is a delta

Answer 2

Deltas are low lying areas where river meets sea or lake

Question 3

What are the three types of deltas

Answer 3

Arcuate, cuspate and birds-foot

Question 4

What course are deltas found in

Answer 4

Lower

Question 5

What are the 4 types of erosion so transport in a river

Answer 5

Traction,saltation,suspension and solution

Question 6

What is traction

Answer 6

Where large Boulder like rocks are pushed along the river bed

Question 7

What’s is saltation

Answer 7

Where pebble like rocks bounce along the river bed

Question 8

Why is suspension

Answer 8

Where very small pebbles float (are carried) along the river bed

Question 9

What’s solution

Answer 9

It is like suspension but the rocks are much smaller (particles)

Question 10

What is an oxbow lake

Answer 10

An oxbow lake is a meander that has been cut off over time

Question 11

How is an oxbow lake formed

Answer 11

As a meander gets bigger the out side bends until it is very big, after this a flood may happen which cuts off the initial flow of the river and creates a new one, then the meander is cut off by left over silt creating an oxbow lake

Question 12

What is a v shaped valley

Answer 12

A river that erodes downwards that creates literal “v shaped valleys”

Question 13

How is a v shapes valley formed

Answer 13

The rivers ant powerful enough to erode sideways so they have to erode the high hillsides that stick out into their path on either side,the hillsides interlock with each other creating v shaped valleys

Question 14

Which course is a v shaped valley in

Answer 14

Upper

Question 15

What is a meander

Answer 15

A large bend in a river

Question 16

Tell me the percentages of water across the earth

Answer 16

50%-ground water
40%-atmosphere
20%-lakes and rivers
10%-glaciers and polar ice

Question 17

What’s ground water

Answer 17

Water stored under ground

Question 18

What’s surface runoff

Answer 18

Where a surface is steep and water runs off it

Question 19

What’s interception

Answer 19

Where a tree stops rain from hitting the ground for longer

Question 20

What’s ground water flow

Answer 20

When the water flows from one ground water to another

Question 21

What’s infiltration

Answer 21

When water slows seeps into into the ground

Question 22

What’s surface storage

Answer 22

When water is stored at the surface e.g river

Question 23

What’s percolation

Answer 23

The movement of water through soil or rock

Question 24

What’s through flow

Answer 24

The movement of water sideways though soil towards a river

Question 25

What’s precipitation

Answer 25

Water falling to the earth

Question 26

What’s channel flow

Answer 26

The downhill movement of water and rivers

Question 27

What is the difference between weathering and eroding

Answer 27

Weathering is Breaking and eroding is carrying away the rocks

Question 28

What’s ‘in site’

Answer 28

In its original place

Question 29

What’s physical weathering

Answer 29

When a rock is broken by heat then filled with water and each time the water freezes the rock expands letting more water in the crack

Question 30

What is chemical weathering

Answer 30

Where oxygen and Carson dioxide add with rain and erodes a rock

Question 31

What’s biological weathering

Answer 31

Where a plant/plants grow in a rock weather and erode it away

Question 32

What are some characteristics of the upper course

Answer 32

1. the gradient is steep
2. the sediment shape/size is big
3. the velocity is high and fast
4. the valley cross section is a v
5. all three river proses occurs in the upper course but the main process is erosion

Question 33

What are some characteristics of the middle course

Answer 33

1. the gradient is less Steep
2. the sediment shape/size is small
3. the velocity is medium/slow
4. the valley cross section is U
5. all three river process occur in the middle course but the main process is transportation

Question 34

What are some characteristics of the lower course

Answer 34

1. The gradient is flat
2. the sediment shape is tiny
3. the velocity is low/slower
4. the valley cross section is { but not sideways lol
5. all three river processes occur in the lower course but the main process is deposition