Water Quiz

What percentage of Earth's water is undrinkable because it has salt?

• 1%

• 97%

• 3%

• 99%

What is the percentage of drinkable (potable) water that is available as freshwater to drink?

• 1%

• 97%

• 3%

• 99%

Why is water considered a limited renewable resource?

• It is evenly distributed around the world

• It is not affected by human activities

• It is not evenly distributed around the world

• All water on Earth is drinkable

What can limit the supply of water further beyond its uneven distribution?

• Conservation efforts

• Droughts and pollution

• Increased rainfall

• Desalination processes

What is an example of point source pollution?

• Air pollution

• Noise pollution

• Factory output pipe

• Pesticides in agriculture

What is nonpoint source pollution?

• Pollution that comes from a single, identifiable source

• Pollution that comes from many sources or areas

• Pollution that is not harmful to the environment

• Pollution that can be easily cleaned up

What is an example of nonpoint source pollution?

• Oil spill from a tanker

• Radiation leak from a nuclear plant

• Solid waste pollution, pesticides and fertilizers from farms

• Dumping of industrial waste into a river

What is eutrophication?

• The process of water purification

• The increase in water temperature due to industrial activity

• When there is an overgrowth of algae due to an increase in nutrients from fertilizers, pesticides, and animal wastes

• The introduction of non-native species into a water body

What is the consequence of algae overgrowth in water bodies?

• It increases the oxygen levels in the water

• It promotes the growth of fish populations

• It blocks the sun and depletes the oxygen

• It purifies the water by breaking down pollutants

What can be a result of biological pollution in a water supply?

• Improved water clarity

• Enhanced taste of drinking water

• Bacteria in the water that can make you sick

• Increased water flow and supply