EU 3_Water Pollution Quiz

What is water pollution?

• The contamination of air with harmful substances

• The contamination of water with unwanted and harmful substances

• The excessive use of chemical fertilizers

• The increase in algae in oceans

What is a primary source of pathogens in water?

• Oil spills

• Industrial waste

• Domestic sewage and animal excreta

• Plastic waste

What effect does nutrient-rich wastewater have on water bodies?

• Causes excessive growth of algae

• Makes the water clean and safe

• Kills all fish in the water body immediately

• Causes the water to evaporate

Which of these is a dangerous metal found in chemical waste?

• Iron

• Calcium

• Lead

• Sodium

What is eutrophication?

• The sudden increase in water temperature

• The growth of water plants that reduces oxygen and light in water

• The process of removing pollutants from water

• The addition of fresh water into lakes and ponds

All water pollution starts directly in the water itself.

• True

• False

Oil spills from tankers are a source of water pollution.

• True

• False

Organic wastes such as leaves and grass are not biodegradable and never break down.

• True

• False

Excessive fertilizers in water bodies promote the growth of tiny green plants called algae.

• True

• False

Radioactive wastes only come from oil refineries.

• True

• False