Over 80 of our energy comes from the burning of fossil fuels such as oil gas

Over 80 of our energy comes from the burning of

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: Over 80% of our energy comes from the burning of fossil fuels such as oil, gas, and coal. Fossil fuels are fairly cheap and plentiful, but there are several problems: Fossil fuels are nonrenewable resources . That means there is a limited supply. Once the world runs out, there is no way to get more. Burning fossil fuels adds carbon dioxide to the air. Most scientists agree that this causes the gradual warming of Earth’s climate, or global warming . Question: What types of energy do not harm our environment? Page 4 of 5
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Student Exploration: Energy Conversions 1. Describe : Four examples of renewable resources are featured in the Energy Conversions Gizmo. These resources are produced all the time, so they will not run out. Read about each energy source, and then explain how each is produced in your own words. A. Wind power: B. Water power (also called hydroelectricity ): C. Solar power: D. Ethanol: 2. On your own : Learn more about one of these renewable resources using the internet or by reading library books. Explain its advantages and disadvantages in a short summary. Page 5 of 5
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