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Ged - Energy and Wrk
| Question | Answer |
|---|---|
| Chemical Energy | energy that is stored in substances and then released in chemical reactions—for example, when organisms turn food into the energy they live on |
| Conserve | keep or save |
| Electrical Energy | energy that comes from the movement of electrons |
| Energy | ability to do work or produce heat |
| Fulcrum | point on which a lever is balanced |
| Gravitational Potential Energy | stored energy in an object above ground that comes from gravity pulling it down towards Earth |
| Heat, | form of energy that is transferred from one object to an object with a lower temperature |
| Joule | unit that measures energy, one joule is the same as 1 Newton of work over 1 meter of distance, power is measured in joules per second |
| Kinetic Energy | energy an object has because of its motion |
| Level | bar that pivots on a fixed point (fulcrum) |
| Mechanical Advantage | how much a machine multiplies the effort (force) put into it |
| Potential Energy | energy an object has because of its position |
| Pulley | simple machine that uses wheels and ropes to reduce the force needed to lift an object |
| Transfer | move from one thing to another |
| Work | form of energy that is force applied over a distance |
| Law of conservation | Energy cannot be created or destroyed, only transformed |
| The equation for work | Work = Force times distance |
| Equation for mechanical advantage | Slope divided by the height |