alleryStart learning →Why are wind and falling water called renewable energy sources?
AThey are not used up
BThey are always cheap
CThey are very simple
DThey are always warm
Answer & Solution
Correct answer: A. They are not used up
1. A turbine takes energy from moving air or falling water.
2. The air and the water themselves are not destroyed in the process.
3. Both keep being replaced by the weather and the water cycle.
4. A source that keeps being replaced is called renewable.
_Source: Siyavula Natural Sciences Grade 7 (CC BY 4.0), Renewable sources_
Keep practising Sources of Energy
Browse all Sources of Energy questions for JCE (Botswana), or explore more Science topics.