Friday
May 24, 2013

Homework Help: science

Posted by Sandra on Monday, July 24, 2006 at 6:21am.

Where does energy come from?


Energy can come from the complete destruction of matter (as in nuclear reactions), or the rearrangement of electrons or other charged particles inside matter (as in chemical reactions) or from electromagetic fields (as in light and heat radiation), or from the deceleration or pressure drop of moving matter (as in hydroelectric or wind power).

Here on Earth, most of the energy that we use comes from the sun, or from the combustion of fossil fuels that were produced by the light from the sun at an earlier time, or from nuclear reactions involving isotopes like U-235 and deuterium that were present before the Earth and sun were formed.

No one has answered this question yet.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Science - Electrical energy can come rom 3 types of energy: __________, ...
Science - Which 6 are energy from sunlight?? nuclear energy,geothermal energy,...
SCIENCE PLZZ HELP - Which 6 are energy from sunlight?? nuclear energy,...
Biology - Which materials produce during the light reactions of photosynthesis ...
Science - During the process of photosynthesis, solar energy is converted into: ...
Science - How does a light bulb transform electrical energy into radiant energy...
Organic and Nuclear Chemistry - Regarding nuclear reactions that release a great...
Science - Molecules that make up matter move constantly.Which of these forms of ...
biology - Which of the following is true about the relationship between energy ...
Socials - For what reasons are you in favour of using nuclear energy to generate...

For Further Reading

Search
Members
Community