WorksheetsWater Filtration Quiz
Total questions: 15
Worksheet time: 9mins
What is water filtration defined as?
The process of adding safe chemicals to water.
The process of removing dirt, germs, and harmful chemicals to make water clean and safe.
The process of only removing large trash from water.
The process of boiling water to remove salt.
What are pollutants?
Harmful or dirty substances that make air, water, or land unsafe.
Only the large items you can see, like trash.
Any material used to build a filter.
Clean particles that naturally settle at the bottom of water.
Which of these is listed as an example of a water pollutant?
Gravel
Cotton
Oil
Activated charcoal
How does a water filter work?
It uses a single, special screen to catch everything.
It uses layers of different permeable materials to remove pollutants.
It uses electricity to dissolve contaminants.
It adds clean water to dilute the dirty water.
What does the vocabulary word "permeable" mean?
A material that is permanent and cannot be moved.
A material that allows liquids or gasses to pass through.
A material that blocks all liquids and gasses.
A material that is harmful, like a contaminant.
What is the main function of gravel in a water filter?
It absorbs bad smells and chemicals.
It removes large debris.
It acts as a fine barrier for tiny particles.
It reduces the water's turbidity.
What is the main function of sand in a water filter?
It filters out smaller particles and sediment.
It removes large debris like leaves and sticks.
It gets rid of chemicals and toxins.
It makes the water smell better.
Which material is used to get rid of some chemicals, toxins, and bad smells through absorption?
Sand
Gravel
Activated Charcoal
Cotton Balls
What is the function of cotton balls in the filter?
To remove large debris.
To absorb chemicals and bad smells.
To act as a fine barrier and keep other layers in place.
To remove viruses and bacteria.
What is "turbidity"?
A measure of how clear or cloudy water is.
Small particles of dirt that settle at the bottom.
The process of removing large debris.
Harmful or unwanted substances like bacteria.
What is "sediment"?
A measure of how cloudy water is.
The material used to absorb chemicals.
Small particles of dirt or sand that settle in water.
The container that holds the filter.
What is the main difference between filtration and purification?
Filtration makes water safe, while purification just makes it look clear.
Filtration removes solid particles , while purification removes unseen contaminants like bacteria and viruses.
Filtration uses charcoal, while purification uses sand.
There is no difference; they mean the same thing.
What is the result of filtration?
It makes water clean and safe to use.
It makes water look cleaner and clearer.
It removes 100% of bacteria and viruses.
It adds chemicals to the water.
Which of these particles is NOT able to pass through a sand, gravel, and charcoal filter?
bacteria
water
viruses
large piece of dirt
_______ is a commonly used chemical for purifying water,
Chlorine
Sodium Carbonate
Sodium Hydrogen Carbonate
None of these
