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Definition
| the energy stored within atoms |
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Term
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Definition
| the movement of an object or its position in gravity |
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Term
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Definition
| the motion of atoms or molecules in a substance |
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Definition
| the energy that is stored in the bonds of molecules |
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Definition
| the movement of molecules in the air that produce vibrations |
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Term
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Definition
the movement of photons
Electromagnetic waves that can travel through a vacuum |
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Definition
| the movement or flow of electons which carry a charge |
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Term
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Definition
| stored energy and the energy of positional gravitational energy. There are several forms of potential energy. |
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Term
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Definition
| energy of motion ( of waves, electrons, atoms, molecules, substances, and objects) |
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Term
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Definition
a push or pull. Forces can:
(1) start objects moving
(2) bring them to a stop
(3)change thier speed
(4) change their direction. |
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Term
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Definition
| how far an object is moved |
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Term
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Definition
Work happens when a force moves an object over a distance
Work= Force X Distance |
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Definition
| a unit of force. It takes about 1 newton of force to lift |
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Definition
| the amount of force that is magnified by using a simple machine |
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Term
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Definition
| A tool that makes work easie by using less force over a greater distance |
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Term
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Definition
| A unit of work is measured in joules (J) |
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Term
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Definition
| Two or more simple machines used together |
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Term
| Law of Conservation of Energy |
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Definition
| Energy can neither be created or destroyed, but can be changed from one form to another. |
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Term
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Definition
( 1) Cannot be used up
(2) It can be re-used in the enviornment. |
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Term
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Definition
(1) can be used up
(2) It cannot be re-used again in the environment |
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Term
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Definition
* Renewable Energy
1. sun's rays that reaches the earth
2. Can be converted to heat and electricty |
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Term
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Definition
** Renewable Energy Source
(1) simply air in motion caused by the uneven heating of the earth's surface by the sun
(2) Wind happens when warm air expands and cool air rushes through |
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Term
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Definition
**Renewable resource
(1) the renewable energy source that produces the most electricity in the US |
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Term
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Definition
** Renewable Resources
(1) heat from within the earth
(2) comes from earth's core |
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Term
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Definition
**Renewable Resource
(1) organic material made from plants animals |
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Term
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Definition
*Non-renewable resource
(1)Non-renewable energy is energy from fossil fuels (coal, crude oil, natural gas) and uranium.
(2)Fossil fuels are mainly made up of Carbon. |
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Term
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Definition
Something that helps us do work. Simple machines are tools that make work easier and they have few or no moving parts
example: inclined plane
wheel and axel
lever
pulley |
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Term
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Definition
| two or more simple machines combined |
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