Unit 307 Session 3 Ground water

​The rainwater cycle

​There is no new water on Earth – all water is about 4.2 billion years old, whether it is sea water (saline), river or stream water, groundwater, fossilised water or

water from the polar ice caps

Labeling

Label the water cycle

Drag labels to their correct position on the image

Precipitation

Condensation

Evaporation

Surface run off

​Of the rain that falls on the UK annually, only 5 per cent is collected and stored in reservoirs for the drinking water supply.

The rest flows in rivers to the sea or is filtered down to the natural water table or aquifers that exist below the ground surface.

​Sources of water in the UK

Word Cloud

What do you think an aquifer is?

​What is an aquifer?

​The main sources of water in the UK are:

Open Ended

Research and describe a 'deep well'

Open Ended

Research and describe a 'shallow well'

Open Ended

Research and describe an 'Artesian well'

Multiple Choice

It is commonly thought that water from a deep well is cleaner than that from a shallow well.

• True

• False

​COLD WATER SYSTEMS FED FROM PRIVATE WATER SUPPLIES

The UK has more than 500,000 people whose only source of potable drinking water is from a private supply.

The main methods of private supplies are from a

wells or a boreholes:

​Boreholes and wells are both sources of water from underground but differ in their depth and width.  

A borehole is a very narrow shaft that is drilled deep into the ground, in this instance to extract water.
In contrast, a well is wider and shallower, particularly if it is dug by hand. Wells may be many feet in diameter whereas a borehole will only be inches across.

Poll

Which do you think would give cleaner water?

• A Borehole

• A Well