Water: A precious resource

What is an inexpensive solution to providing everyone with more fresh water to use?

• desalination

• water conservation

• drilling more wells into aquifers

• building more dams

Water on the top the earth can form lakes or rivers, these are termed ____.

• fresh water
• infiltration
• surface water
• groundwater

The most efficient way of irrigation is _______

• Sprinkler irrigation

• Surface irrigation

• Drip system

• Canal Alignment

What are the two main problems with water?

• overuse and pollution

• frozen and too salty to drink

• too many fish and pollution

• color and taste

------------- pressure on agriculture forces increasing use of groundwater?

• Population

• industries

• all the above

Why is fresh water a limited resource?

• It isn't because it is a renewable resource

• 97% of water is in the oceans and too salty to drink.

• Only 2.6% is drinkable and is stored in icecaps, rivers, and lakes.

Where 97.4% of Earth's water is stored?

• Glaciers

• pH

• Groundwater

• Sea water

AMOUNT OF WATER COVERING EARTH

• 97%

• 74%

• 70%

• 68%

THREE FORMS OF WATER

We have seen that most of the water that we get as rainfall just flows away. This is a waste of precious natural resource. The rainwater can be used to recharge the groundwater. What is this process called ? Choose 2 answers

• Water saving

• Rainwater harvesting

• Rainwater saving

• Water Harvesting