What percentage of the Earth is water ?

• 55%

• 68%

• 71%

• 89%

“Ensuring availability of water for future generations “ is a _____

• Strategy of water conservation

• Goal of water conservation

• Key activity of water conservation

A scientist studies a sample of swamp water. She finds that there are many dead plants and fish in the water. _______ in the water could be the main cause of this?

• mud and silt

• litter and pollution

• Pebbles and sand

• Oxygen

Which of the following is a way of conserving water?

• Leave the tap running while brushing teeth

• Placing a brick in the toilet flush system

• Use a hose to wash the car

• Taking a 10-minute shower

When is the best time of the day to water your lawn?

• Early morning or late afternoon

• At noon

• All day long

• At night

How much water is wasted per household per day?

• 60L

• 100L

• 1200L

• 140L

What are the top three countries whose people have less access to clean water?

• Eritrea, India, Tuvalu

• Eritrea, Uganda, Papua

• Uganda, Egypt, Tuvalu

• Papua, Uganda, Egypt

Where does most of Singapore’s water supply come from?

• Important water

• Local catchment water

• Desalinated water

• Newater

What is the water division of earth?

• Ocean water-47%

  fresh water-3%

  fresh water frozen as ice-50%

• Ocean water-71.5%

  fresh water-15%

  fresh water frozen as ice-13.5%

• ocean water-97.5%

  fresh water-1%

  fresh water frozen as ice-1.5%

• ocean water-82%

  fresh water-1.5%

  fresh water frozen as ice-16.5%

How many water catchment area are there in Singapore?

• 17

• 9

• 5

• 21