Human Impact on Water P.63-69

What percentage of water in the United States is used for thermoelectric power?

• 31%

• 49%

• 12%

• 4%

What is the main source of freshwater for human activities?

• Saltwater

• Groundwater

• Rainwater

• Oceans

What is an aquifer?

• A type of fish

• A large lake

• An area of permeable sediment or rock that holds water

• A type of dam

What is a harmful algal bloom?

• A type of fish

• A type of tree

• An explosive growth of algae that harms organisms

• A type of flower

What is the Great Pacific Garbage Patch?

• A large coral reef

• A new type of dam

• A type of fish

• A large area of floating trash in the Pacific Ocean

What percentage of ocean pollution comes from land-based sources?

• 13%

• 33%

• 87%

• 44%

What is one way to reduce water pollution?

• Increase water usage

• Use alternative products without toxins

• Use more artificial fertilizers

• Pour motor oil into drains

What is the main cause of excess sediments in oceans?

• Human activities like cutting down trees

• Natural erosion

• Volcanic eruptions

• Fish migration

What is the impact of dams on fish migration?

• They help fish migrate faster

• They have no impact

• They interfere with fish migration

• They create new fish habitats

What is one effect of ocean currents?

• They create new islands

• They distribute thermal energy

• They stop fish migration

• They increase ocean pollution