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15 Cards in this Set
- Front
- Back
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What are the 3 methods of heat transfer?
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Conduction, Convection, Radiation
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How does conduction work?
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Heat energy transfers from molecule to molecule through a substance when there is a temp. difference. Fast moving molecules transfer to slow. slow become fast.
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What is a conductor?
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A material that transfers heat quickly. (Most metals, especially copper)
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What is an insulator?
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A material that doesn't transfer heat well. Doesn't stop it, but slows it down. (Styrofoam, wool, paper)
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What is convection?
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Moving heat by moving the molecules of a substance from one place to another. In this type, heat energy is transferred in liquids or gases.
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What is radiation?
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Energy transferred through air or space by a source through electromagnetic waves. Produced by every object in the universe.
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What is matter?
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Something that had mass and has volume (takes up space)?
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What is energy?
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The ability to cause change. Measured in joules. Does not take up space, has no mass. Can not be created or destroyed.
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What is kinetic energy?
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the energy of motion. Depends on speed and mass of object. More speed, more K.E. More mass, more K.E.
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What is potential energy?
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Stored energy, ready for use.
Not moving or doing work, but capable of causing change. |
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What is gravitational potential energy?
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Stored energy as a result of position or shape. Depends on weight and height. The GPE of an object is equal to the work needed to be done to lift the object.
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What is elastic potential energy?
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The potential energy associated with objects that can be stretched or compressed. The amount of EPE and object has depends on how much the object is stretched or compressed.
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What is mechanical energy?
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energy that moves objects. Riding a bike or running takes ME.
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What is sound energy?
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Energy associated with the vibration of particles in a solid, liquid or gas. As they vibrate, particles in the air which vibrate structures in your ear. cannot travel vacuum of empty space without air.
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What is electrical energy?
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Energy of electrons/electrical charges. Negatively charged particles in atoms.
Lightning is electrical energy. |
