Surface Water Video (Wayground)

What happens to water after it is flushed down the toilet?

• It disappears forever.

• It goes to a wastewater treatment plant.

• It flows directly into the ocean.

• It turns into drinking water immediately.

Why is freshwater considered precious?

• Because it is found only in the ocean.

• Because only a small percentage of it is accessible for human use.

• Because it makes up most of the Earth's water.

• Because it is salty and hard to use.

What percentage of the world's surface freshwater is contained in the Great Lakes?

• 74%

• 50%

• 21%

• 10%

What can happen when too many nutrients enter surface water?

• The water turns into ice caps.

• The water cycle stops working.

• The water becomes salty.

• Algae blooms can occur, blocking sunlight and harming organisms.

How can individuals help protect freshwater systems?

• By using more fertilizers on their lawns.

• By taking shorter showers and turning off the faucet while brushing teeth.

• By throwing trash into rivers.

• By using more water for agriculture.