Rivers

Question 0

What is in a drainage basin system

Answer 0

Sea Lake 
Mouth
Meander
Tributary
Water shed
Confluence 
Source

Question 1

What is a drainage basin system

Answer 1

The area which is drained by a river and its tributaries

Question 2

What is the source

Answer 2

The area in which a river begins

Question 3

What is a Tributary

Answer 3

A smaller river that joins a larger river

Question 4

What is a Confluence

Answer 4

The point at which two rivers join

Question 5

What is the Mouth

Answer 5

Where a river ends its journey flowing into the sea or a lake

Question 6

What is a Meander

Answer 6

A turn in a river

Question 7

What is a Watershed

Answer 7

The boundary between two drainage basins marked by a ridge of high land

Question 8

Is the hydrological cycle an open or a closed system

Answer 8

Closed

Question 9

Is the drainage basin system a open or closed system

Answer 9

Open

Question 10

A drainage basin system is a part of the ……

Answer 10

Worlds hydrological (water) cycle

Question 11

What evaporation

Answer 11

The process where water changes from a liquid to a vapour

Question 12

What is condensation

Answer 12

The process by which cooling vapour turns into liquid

Question 13

What is precipitation

Answer 13

Water that falls on the Earth’s surface eg. rain, snow, hail

Question 14

What is surface min-off

Answer 14

The movement of water over the land, possibly as a river

Question 15

What is transpiration

Answer 15

Plants giving off water vapour from their leaves

Question 16

What is groundwater

Answer 16

Water that has sunk through the soil into the rocks below

Question 17

What is the process where water changes from a liquid to a vapour

Answer 17

Evaporation

Question 18

What is the process by which cooling vapour turns into liquid

Answer 18

Condensation

Question 19

What is the process when Water that falls on the Earth’s surface eg. rain, snow, hail

Answer 19

Precipitation

Question 20

What is the process when the movement of water over the land, possibly as a river

Answer 20

Surface min-off

Question 21

What is the process when plants giving off water vapour from their leaves

Answer 21

Transpiration

Question 22

What is the process when water that has sunk through the soil into the rocks below

Answer 22

Groundwater

Question 23

How many different ways can a river erode

Answer 23

4

Question 24

This process involves the force of water against the bed and banks

Answer 24

Hydraulic action

like a power hose

Question 25

This is the process by which the bed and the banks are worn down by the river’s load. The river choose these particles against the bed and banks, sometimes at high velocity.

Answer 25

Abrasion

Like sand paper

Question 26

This is a process when a material (the load) carried by the river bump into each other and so are smooth and broken down into smaller particles.

Answer 26

Attrition

Rug- banging

Question 27

This is the process of the chemical action of the river water. The acids in the water slowly dissolves the bed and the banks.

Answer 27

Corrosion

Chemical weathering

Question 28

This happens when boulders and pebbles are rolled along the river bed at times of high discharge

Answer 28

Traction

Question 29

This happens when sand sized particles are bounced along the river bed by the flow of water.

Answer 29

Saltation

Putting down really heavy bags and then lifting them up going some distance and doing the whole thing over again

Question 30

This happens when fine clay and sand particles are carried along within the water even at low discharges.

Answer 30

Suspension

Question 31

This happens when some minerals dissolve in water such as calcium carbonate. This requires very little energy

Answer 31

Solution

Question 32

Waterfalls

Answer 32

1) . Water flows over the hard rock and erodes the soft rock.
2) . Soft rock is eroded by the processes of hydraulic action and abrasion
3) . A plunge pool is deepened below the water fall. The ledge/ overhang of the hard rock is no longer supported.
4) . The overhang collapses. The rock falls into the plunge pool.
5) . These processes are repeated, the waterfall retreats upstream to form a GORGE

Question 33

In a meander the faster flow of water is always

Answer 33

on the outside

Question 34

How an ox-bow lake is formed part 1

Answer 34

A meander strata as a slight bend. Water flows faster on the outside of the bend the pan on the inside

Question 35

How an ox-bow lake is formed part 2

Answer 35

So the outside of the bend is eroded away. Material is deposited on the inside of the bend.

Question 36

How an ox-bow lake is formed part 3

Answer 36

This erosion and deposited turns the bend into a meander

Question 37

How an ox-bow lake is formed part 4

Answer 37

The meander bends more and more over the years until it becomes a really tight loop

Question 38

How an ox-bow lake is formed part 5

Answer 38

When the water level is really high, the river has enough energy to go straight across the loop, rather than go around it.

Question 39

How an ox-bow lake is formed part 6

Answer 39

Then there is a meander cut-off

Question 40

How an ox-bow lake is formed part 7

Answer 40

The river keeps to the channel, so the loop is left as an oxbow lake.

Question 41

How an ox-bow lake is formed part 8

Answer 41

After a long time the oxbow lake slits up and dries out, and plants grow in it.

Question 42

Flood plains and __________ are formed by the ___________ in times of river flood. The rivers ______ is composed of different sized __________. Every time the river floods, deposition builds up the ______________.

Answer 42

Leveés
Deposition
Load
Floodplain