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4 cards from this section. Quick, good the night before a test.
What does an air filter do?
Think about what makes the air cleaner.
Why is water purification necessary?
Consider health risks associated with dirty water.
What is the primary function of air filters?
Consider what makes the air fresher.
True or False: Reverse osmosis requires no energy input.
Think about how pressure is applied in the process.
Design a simple water purification system using reverse osmosis. What materials would you use and how would you explain the process involved?
Think about how the pressure helps in the process.
Critically assess how efficient sedimentation is in treating wastewater. Discuss factors that affect its effectiveness.
Consider how these factors influence movement through liquids.
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