Unit 7: Water Usage & Pollution

What percent of Earth is fresh water?

• 70%
• 3%
• .03%
• 97%

Surface water results from...

• Precipitation & snowmelt
• Irrigation & percolation 

Where is the zone of saturation?

• Near rivers and streams 
• Above the water table
• Below ground 

What uses the most water when it comes to global water use?

• Agricultural
• Industry
• Residential/municipal 

What is an industrial use for water?

• Manufacturing goods
• To dispose waste 
• Generate power 
• All of the above 

When it comes to residential, what is water used most for?

• Toilet
• Outdoor
• Bath/shower/laundry

Which is a problem dealing with water?

• Overconsumption 
• Uneven distribution 
• Pollution 
• All of these are problems relating to water 

What is water pollution?

• Prolonged period of low precipitation and high evaporation
• Increase in temperature of a body of water 
• Introduction of chemical, physical, or biological agents that degrade water 
• Pollution from a single area

What is a point source?

• Pollution from a single source 
• Pollution from many sources 

Why are there slower chemical reactions in groundwater?

• Slow flow
• Less dissolved oxygen 
• Fewer decomposing oxygen 
• All of the above