The water cycle
Evaporation is ...
When a liquid turns into a gas. Water evaporates to become water vapour or steam.
Is the Upper Course at the beginning, middle or end of a river?
Beginning
Is the middle course of the river in the beginning, middle or end of the river?
middle
Is the Lower Course of a river at the beginning, middle or end of a river?
end
What is flooding?
When water rises and submerges (covers) land.
What is precipitation?
Any form of water falling from the sky, such as rain, hail, sleet or snow.
Can you sometimes find V-shaped valleys in the upper course of a river?
YES
What is a meander?
A bend in the river
What do we call the widest part of the lower course, where the river's water joins the sea or ocean?
mouth
What causes flooding?
heavy rain, blocked drains, burst rivers
Rain, hail, sleet and snow are all types of _________ .
Precipitation
Can you find waterfalls in the upper course of a river?
YES
What can you find in the middle course of a river? (name 2 features)
Meanders, oxbow lakes, gentle gradients
Does water flow slowly or quickly in the lower course?
slowly
What helps manage a flood?
A) dams and levees
B) Planting trees in the river channel
C) diversion of river courses
D) all of the above
D) all of the above
Name 2 stores of water in the natural environment
any 2 of: atmosphere, ocean, glacier, river, lake, sea
Can you find meanders in the upper course of a river?
NO
Which of these is NOT in the middle course of a river:
meander
floodplain
oxbow lake
water
floodplain
What is deposited in the lower course of a river?
sand / silt / clay
What do trees do that helps prevent flooding?
Transpiration - they absorb water through their roots and evaporate it into the atmosphere from their leaves.
What is the correct sequence of the water cycle?
A) Precipitation > Evaporation > Condensation > Transpiration
B) Evaporation > Condensation > Precipitation > Run-off
C) Evaporation > Precipitation > Transpiration > Condensation
D) Condensation > Evaporation > Precipitation > Transpiration
B) Evaporation > Condensation > Precipitation > Run-off
What do we call the start of the upper course of a river?
The source
What river processes cause meanders to be formed? (2)
Erosion and deposition
What can you find in the lower course of a river?
meanders, large floodplains, deltas
How does the Thames Tideway help to reduce flooding?
A) by making the river flow faster
B) by storing water in a reservoir
C) by diverting water to the ocean faster
D) by capturing sewage and storm water before it reaches the river
D) by capturing sewage and storm water before it reaches the river