Hydrological cycle and flooding

Question 1

What is filtration?

Answer 1

water moving into the soil

Question 2

What is perlocation?

Answer 2

Water moving into permeable rocks

Question 3

What is surface runoff?

Answer 3

Flow of water over ground surface

Question 4

What is ground water flow?

Answer 4

Flow of water through rocks

Question 5

What is thoroughflow?

Answer 5

Flow of water through the soil

Question 6

What is interception?

Answer 6

Trees catch rainfall and stop it reaching the ground

Question 7

What are the main routes to the sea water will take once it reaches the ground?

Answer 7

Surface runoff
Throughflow
Ground water flow

Question 8

What increases the chance of a flood?

Answer 8

Any factor that encourages surface runoff and reduces infiltration or interception

Question 9

What factors will cause flooding?

Answer 9

Saturated ground
Icy ground
Impermeable ground
A mountain range
Urban areas

Question 10

What factors are less likely to cause flooding?

Answer 10

Rural areas
Hot climates
Forests
Flat fields
Droughts

Question 11

What is the rising limb in a hydrograph?

Answer 11

The rising flood water in a river

Question 12

What is a recession limb in a hydrograph?

Answer 12

Falling flood water in the river

Question 13

What is basin lag time in a hydrograph?

Answer 13

time difference between the peak of the rain storm and the peak flow of a river