WorksheetsUnit 5: Water Usage Review
Total questions: 15
Worksheet time: 8mins
Which of the following is the best definition of potable water?
Water used for farming
Water safe to drink
Water from oceans
Water that is cloudy
Which country uses more water per person each day?
India
China
United States
Mexico
About how much water does the average person in the U.S. use per day?
41 liters
80 liters
300 liters
1,000 liters
Which of the following is NOT one of the three major uses of water?
Residential
Industrial
Agricultural
Recreational
Why is water treated before drinking?
To make it colder
To remove harmful substances
To add minerals
To make it salty
Which of the following is a poisonous metal removed during water treatment?
Oxygen
Lead
Nitrogen
Carbon dioxide
Which is a pathogen found in untreated water?
Salt
Bacteria
Sand
Oxygen
Which step of water treatment removes large particles by letting them settle?
Filtration
Sedimentation
Disinfection
Coagulation
What is the final step in water treatment?
Filtration
Flocculation
Disinfection
Sedimentation
What happens in the filtration step?
Chemicals are added
Water is boiled
Small particles are removed
Water is frozen
Hard water is different from soft water because it contains more:
Salt
Minerals
Bacteria
Soap
In the hardness test, more suds means the water is:
Harder
Dirtier
Softer
Hotter
What is a hydroelectric dam used for?
Cleaning water
Storing fish
Generating electricity
Preventing floods
Which type of pollution comes from one specific source like a pipe?
Nonpoint-source
Point-source
Groundwater
Natural
Which type of pollution comes from runoff over land and roads?
Point-source
Factory pollution
Nonpoint-source
Wastewater
