Aim / Objective:
To demonstrate how rainwater can be collected from a house rooftop using a funnel system and stored in a container or tray for reuse, promoting water conservation.
Materials Required:
- Cardboard or thermocol house model
- Funnel (to collect rainwater)
- Plastic tray or container (to store collected water)
- Plastic pipes or straws (for connecting the funnel)
- Glue or tape
- Scissors or cutter
- Small jug or bottle (to pour water and simulate rainfall)
- Sand, gravel, and charcoal (optional – for filter setup)
Working Principle:
This model works on the principle of rainwater collection and storage.
When rainwater falls on the rooftop, it flows through pipes or channels into a funnel system, which directs the water to a plastic tray or storage tank placed on the ground.
This demonstrates how households can collect, filter, and reuse rainwater instead of letting it go to waste.
Procedure:
- Create a small house model using cardboard or thermocol.
- Attach a funnel near the roof’s edge to act as the rainwater collector.
- Connect the funnel to a pipe or straw, directing it to a plastic tray placed on the ground.
- (Optional) Add a small filter layer of sand, gravel, and charcoal inside the funnel to show purification.
- Pour water from a bottle or jug over the roof to simulate rainfall.
- Observe how the water travels through the funnel and collects in the tray below.
Observation:
The water poured on the roof flows through the funnel and pipe into the tray, showing how rainwater from rooftops can be efficiently collected and stored.
Filtered water appears clearer and can be reused for daily household purposes.
Conclusion:
Rainwater harvesting is an effective and simple method to conserve water and recharge groundwater.
By using rooftops, funnels, and collection systems, we can reduce water wastage and make our homes more eco-friendly and sustainable.