- A cardboard box
- A plastic bottle
- A few rocks or pieces of gravel
- A piece of tape
- A cup of water
1. Cut the cardboard box in half lengthwise.
2. Stand one half of the cardboard box up on its end.
3. Tape the plastic bottle to the inside of the cardboard box so that it is facing down.
4. Place the rocks or pieces of gravel around the base of the plastic bottle.
5. Pour the cup of water into the plastic bottle.
6. Observe how the water flows out of the bottle and over the rocks.
This simple model of a dam can be used to demonstrate how dams work to control the flow of water. The water in the bottle represents the water that is stored behind a dam. The rocks or pieces of gravel represent the materials that are used to build a dam. The tape represents the way that dams are sealed to prevent water from leaking out. The cardboard box represents the land that is surrounding a dam.
As the water flows out of the bottle and over the rocks, it creates a small waterfall. This waterfall represents the way that water flows over a dam. The rocks and gravel help to slow down the flow of water and prevent it from eroding the land.
This simple model of a dam can be used to teach students about how dams work. It can also be used to demonstrate how dams can be used to control flooding, generate hydroelectric power, and provide water for irrigation.
