Product Description
Award-winning video and lesson investigations on the topic of waterworks. Key concepts include:
- Water is pumped to the water works.
- Natural water is not clean enough for use in homes.
- The water is cleaned at the water works before it is pumped into homes. Water is tested for its cleanliness.
- Settlement tanks are used to allow larger dirt particles to sink to the bottom. Cleaner water is drawn off from the top.
- This water is further cleaned by filtering it through gravel and sand. Chemicals are added to the filtered water to kill harmful bacteria.
- The water is then tested to ensure that it is safe for human consumption.
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