Unit 8: Watersheds TEST CORRECTIONS

Front

What happens to ocean temperature as depth increases?

Back

Water temperature decreases as the ocean gets deeper.

Front

What is the purpose of the clay and plastic liner in modern landfills?

Back

To prevent groundwater pollution by containing waste.

Front

Why is building a factory at the top of a river the worst location?

Back

It can lead to pollution flowing downstream, affecting larger areas.

Front

Where was the highest pollution found in the water samples collected?

Back

Point B.

Front

What environmental harm does dumping used oil around a fence post cause?

Back

It goes deep into the ground and pollutes the groundwater.

Front

What is a watershed?

Back

An area of land where all the water drains into a common body of water.

Front

How do landfills manage trash?

Back

By burying it underground to reduce surface pollution.

Front

What is the role of collection tanks in modern landfills?

Back

To collect leachate, which is liquid that drains from the landfill.

Front

What is leachate?

Back

A liquid that has percolated through a solid and leached out some of the constituents.

Front

Why is groundwater important?

Back

It provides drinking water and supports ecosystems.