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Film summary
Discover how energy from the Sun is converted into different forms and what happens to energy that is "lost" from a system.Key facts
- The Sun provides almost all the energy on Earth.
- Energy cannot be created or destroyed.
- Efficiency is the useful energy transferred and is expressed as a percentage.
- No device can be 100% efficient.
Transcript
Almost all of the energy used on Earth comes from the Sun.
Plants convert light energy from the Sun into chemical energy, through the process of photosynthesis, which can be used as food and fuel.
Our bodies, like machines, can convert chemical energy into kinetic energy and heat energy.
And our power …
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