(S2W6D2) Groundwater depletion and contamination

Major sources of water pollution

• agriculture

• industrial

• recreation

• mining

Ground subsidence or sinking of the ground happens when water is used faster than it is replenished. It is caused by

• sinkhole

• topography

• zone of saturation

• groundwater depletion

Depletion of water table is due to

• Less rainfall

• Increase in population

• Industrial activities

• All of the above

How can we take out water from an Acquifer?

• a) By using tube well

• b) By digging a well

• c) By hand pump

• d) Both a and c

Which of the following causes a depletion in water table of a place?

• Constructing factories and houses

• Making concrete roads

• Deforestation

• All of these

If a well is over-pumped... what could happen?

• there will be more groundwater

• less groundwater + aquifers will dry out

• the water table does not change

Groundwater contamination…

• is easily cleaned up
• is difficult to clean or remove
• is not a problem for modern people
• does not affect the United States

What do all the sources of groundwater contamination shown have in common?

• caused by humans so it is preventable
• naturally occurring so it cannot be prevented