Flooding rivers | Geography | Quizalize & Oak National Academy

Starter quiz

Which direction does a river flow?
- downstream ✓
- upstream
- mainstream
Which of these statements describe the river in the image?
- found in the upper course ✓
- slow flowing ✓
- narrow shallow channel ✓
- lots of erosion
Which of these is a landform in the upper course?
- waterfall ✓
- floodplain
- meander
Where would you find an estuary?
- Where two rivers meet
- Where river meets the sea ✓
- Where the river starts
Bouncing, floating, rolling and dissolved are all ways the river does what?
- erodes
- transports ✓
- deposits
What do we call the path a river takes from its source at the start to its mouth at the end? Unscramble the letters to find the answer.
- 1
  
  ⇔
  
  C
- 2
  
  ⇔
  
  O
- 3
  
  ⇔
  
  U
- 4
  
  ⇔
  
  R
- 5
  
  ⇔
  
  S
- 6
  
  ⇔
  
  E

How does rainwater enter a river?
- through the rocks ✓
- tributaries ✓
- through the soil ✓
- through a hosepipe
A river floods when water rises over its...
- banks ✓
- beds
- mouth
Are these human or natural causes of flooding?
- heavy rainfall
  
  ⇔
  
  natural ✓
- steep slopes
  
  ⇔
  
  natural ✓
- building towns
  
  ⇔
  
  human ✓
- deforestation
  
  ⇔
  
  human ✓
How do trees help reduce the risk of flooding?
- they absorb water ✓
- they release water
- they block the flow of water in the river
Towns and cities have grown ______, and this increases the risk of flooding.
- 'larger' ✓
What type of surfaces increase the risk of flooding?
- grass
- soil
- concrete ✓
- tarmac ✓

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Rivers flood when they can’t hold all the water that is entering into them from tributaries, the soil and the rock.
Heavy rainfall or long-lasting rainfall is a common cause of flooding.
Steep slopes can cause flooding as rainwater will run quickly downhill to the river during a storm.
Humans can make flooding more likely by deforestation and building tarmac and concrete surfaces.

River flooding is only influenced by natural factors like the amount of rainfall.

Humans can make flooding more likely by building towns and cities and deforestation.

Banks - The sides of a river are called its banks.
Drainage basin - A drainage basin is the area drained by a river and its tributaries.
Deforestation - Deforestation is where trees are chopped down by humans.