Across
- 1. A large natural or artificial lake used as a source of water supply.
- 2. We can build a _____ across a river to control the flow of water.
- 5. When water turns into a gas it is called _______.
- 6. ________ is a device that uses the energy of some fluids, eg. water, steam or air.
- 7. The movement of water between the Earth and the clouds is called the ________.
Down
- 1. The water cycle will keep water moving on the Earth; we call hydropower a ____ energy source.
- 3. The force that moves water from high ground to lower ground is _______.
- 4. In a hydropower plant, the water flows through a tube called ______.
- 5. Hydro means _____.