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Does wood energy come from the sun?

Updated: 8/11/2023
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10y ago

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There are lots of forms of potential energy. For instance, a piece of wood sitting on the edge of a counter top has potential energy... push it off and it falls. In this case (since you are posting this in the chemistry forum) I am assuming you are talking about chemical energy (another form of potential energy). The answer is yes---and a huge amount of it. Wood is made up principly of water and cellulose. Cellulose is comprised of glucose molecules linked together in long chains. The long chains are held together very well by strong intermolecular forces including many hydrogen bonds. All of the covalent bonds holding the atoms C, H, and O atoms together and the intermolecular forces that hold the cellulose molecules together are very stable---it takes energy to break all these attractive forces and LOTS of it. However, when you burn wood and convert the C into CO2 and the H into H2O you get bonds that are much more stable than the ones in cellulose or the intermolecular forces between the molecules. So there is potential energy in the wood---equal to the chemical energy released when the cellulose is combusted to form CO2 and H2O.

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15y ago
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15y ago

Kinetic energy refers to motion. If a mass is in motion then it is said to have kinetic energy. A lump of wood is a store of chemical energy. This energy is transformed into heat and light when burned.

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12y ago

there is chemical energy that can released through oxidation, aka burning, wood can also have potential energy by being used as a projectile BEFORE it is shot or it can have kinetic energy by moving, floating in a stream,shot from a cannon,dropping.

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10y ago

Yes.

Trees use sunlight together with nutrients from the ground and water - and a process called photosynthesis - to grow. Without sunlight, no photosyntesis and no trees and no wood to burn.

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11y ago

Biomass is the energy from plants and plant-derived materials. The sun supports photosynthesis so that these plants can grow. Therefore, biomass is indirectly derived from the sun's energy.

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13y ago

chemical energy is stored in wood...

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15y ago

Chemical Energy

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15y ago

Yes.

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Q: Does wood energy come from the sun?
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How does the energy from a wood fire actually come from the sun?

light (sun) ----> photosynthesis (chemical energy) mechanical energy ----> cut down the tree work ----> move the tree store chemical energy from sun ----> light so basically photosynthesis gives the tree chemical energy, and when it is burned, the chemical energy is released causing light.


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