Quiz 6 - Water Pollution

Which property of water allows ice cubes to float?

• Cohesion

• Density

• Surface Tension

• Adhesion

Why should farmers be concerned about unused nitrates contaminating surface water and groundwater supplies?

• Unused nitrates reduce algae growth

• Unused nitrates increase oxygen in the water

• Unused nitrates can lead to excessive amounts of nutrients causing overpopulation of plants & fish

• Unused nitrates can result in toxic pollution

Which property allows water in a pool to stay cold on a hot summer day?

• Adhesion

• Cohesion

• High Specific Heat

• Surface Tension

Which act of stewardship most directly impacts the water cycle?

• walking to work or school

• recycling aluminum soda cans

• limiting shower time to 10 minutes

• carpooling to work during the week

Which is the best example of a point source pollution?

• runoff from fields

• pesticides sprayed into the air

• oil spill from a boat in the Atlantic Ocean

• smoke from multiple industries in a large city

What is the area of land that drains all water in it to the ocean?

• River basin

• Estuary

• Tributary

• Run off

Mary pours 1,000 mL of water into a beaker to represent all of the water on Earth. She then measures out 800 mL and puts it into another beaker. Which portion of Earth’s water is most closely represented by the 800 mL?

• water in the ocean

• water in the ground

• water in lakes and rivers

• water trapped in polar ice caps

Which property of water allows individual water molecules to stick together?

• Adhesion

• Cohesion

• Surface Tension

• High Specific Heat

Mrs. Tuttle's car leaks gasoline onto the parking lot at school. During the next heavy rain, that gasoline is washed into the drain and into local water sources. Gasoline in the water is an example of which type of pollution?

• Bacterial Pollution

• Nutrient Pollution

• Sediment Pollution

• Toxic Pollution

Mrs. Tuttle puts fertilizer on her garden to increase her crop yield this year. Fertilizers can run off into local water sources. Fertilizers in a water source is an example of which type of pollution?

• Bacterial Pollution

• Nutrient Pollution

• Sediment Pollution

• Toxic Pollution