Succession, Watershed, W.E.D

When water flows across Earth's surface as runoff, what happens to some of the water?

• It is absorbed into the ground.

• It evaporates immediately.

• It becomes part of the atmosphere.

• It turns into ice caps.

How does groundwater get replenished?

• Through a process called recharge, where water from rain and snow trickles through the porous rock

• By water plants releasing excess water into the ground

• Through artificial means by pumping water into the ground

• By the melting of glaciers and ice caps

What is surface water?

• Water that is stored underground in aquifers

• Water that flows over Earth's surface

• Water that is found only in oceans

• Water that is used for industrial purposes only

Why is it difficult to remove contamination from groundwater?

• Because it flows very quickly

• Because it is protected underground

• Because the water is underground and can be contaminated by pollutants trickling through porous rock

• Because it is always pure and does not get contaminated

What is point source pollution?

• Pollution that comes from a single, identifiable source

• Pollution that is spread out over a large area

• Pollution that comes from natural sources only

• Pollution that cannot be traced back to any source

Which of the following is NOT a reason why surface water can be easily contaminated?

• It is not protected underground

• It often results from wastes that are not disposed of properly

• It is always pure and free from contaminants

• Pollutants can enter water reservoirs directly

What is non-point source pollution?

• Pollution that comes from a single, identifiable source

• Pollution that is caused by multiple sources or is difficult to trace

• Pollution that only comes from agricultural activities

• Pollution that is not harmful to the environment

Why can't humans and other animals drink sea water?

• Because it is too cold

• Because it contains useful minerals

• Because the high salt content makes us sick

• Because it is too clear

What is a major source of drinking water for people all over the world?

• Bottled water

• Groundwater

• Soft drinks

• Sea water

Which of the following is a way that human activities can affect watersheds?

• Non-point source pollution

• Planting more trees

• Reducing carbon emissions

• Increasing wildlife habitats