Human Activity and Water

The majority of water on Earth is ______?

• Saltwater
• Freshwater
• Frozen
• Usable

The majority of Earth's fresh water can be found as what?

• Groundwater

• Glaciers

• Lakes

• Oceans

97% of Earth is covered in water.

• True
• False

About 3% of the water on Earth is freshwater.

• True

• False

Only about 1% of the water on Earth is __________. 

• Freshwater
• Saltwater
• Usable
• Unusable

All of the following are ways that humans directly pollute water EXCEPT

• Raising the temperature of bodies of water
• Pumping sewage into water
  Diverting water off of streets with storm sewers
• Water flowing off the streets into storm sewers.
• Spilling oil and chemicals into the water

The picture shows an example of what?

• Point Source Pollution
• Non-Point Source Pollution

Water running off of farmland collecting chemicals is point source pollution.

• True

• False

Which of the following will cause thermal pollution?

• An electrical power plant cooling its reactors.
• A farmer using pesticieds on his crops.
• Raw sewage pumped into rivers
• An oil spill

Since water is renewable we do not need to conserve it.

• True
• False