Desalination: A Solution to Water Scarcity?

What percentage of the Earth's surface is covered in water?

• 91%

• 61%

• 71%

• 81%

Tags

NGSS.MS-ESS2-4

How many cubic miles of water cover the Earth's surface?

• 232.5 million

• 332.5 million

• 432.5 million

• 532.5 million

Tags

NGSS.MS-ESS2-4

What percentage of the Earth's population is projected to be living in water-stressed areas by 2050?

• More than 75%

• Around 50%

• Around 25%

• Less than 25%

Tags

NGSS.MS-ESS3-4

What is the oldest form of desalination?

• Thermal desalination

• Boiling water

• Capturing steam

• Reverse osmosis

Which country produces one fourth of the desalination water currently on the planet?

• China

• United States

• Saudi Arabia

• India

What is the main concern about the disposal of brine from desalination plants?

• It may lead to air pollution

• It may cause soil erosion

• It may harm marine life

• It may affect groundwater

Tags

NGSS.MS-ESS3-4

What is the main benefit of desalination as a water supply method?

• Environmental friendliness

• Low cost

• Low energy consumption

• Reliability

What is the average daily water consumption of the average person in the U.S.?

• 125 gallons

• 100 gallons

• 75 gallons

• 50 gallons

What is the volume of waste water equivalent to globally?

• Twice the volume of water that passes through Niagara Falls

• Three times the volume of water that passes through Niagara Falls

• Four times the volume of water that passes through Niagara Falls

• Five times the volume of water that passes through Niagara Falls

What is the space between ocean water and freshwater known as?

• Brackish water

• Salty water

• Muddy water

• Silt water