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10 Cards in this Set
- Front
- Back
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What is an electromagnetic wave? What does it consist of? How fast does it move?
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Electromagnetic spectrum is a transverse wave that transfers electrical and magnetic energy. It consists of vibrating electric and magnetic fields that move throught space at the speed of light. They do not require a medium.
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What is electromagnetic radiation?
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The energy that is transfered through space by electromagnetic waves.
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How fast do electromagnetic waves travel per second? What is it called? How much faster is the speed of light compared to the speed of sound?
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About 300,000 km per second. This is called the speed of light. About 1,000,000 faster than sound waves.
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What kind of model can electromagnet waves be explained by? Which other type of model can better explain it?
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a wave model. a particle model.
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What is polarized light?
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Polarized light is light that only vibrates in one direction that passes through a polarized filter. No light passes through 2 polarized filters that are placed at right angles to each other.
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What is the photoelectric effect?
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The ejection of elctrons from a substance where light is shined on it.
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What is a photon?
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A tiny particle or packet of light energy.
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What is unpolarized light?
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Light waves that vibrate in all directions.
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How do electromagnetic waves travel?
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electric and magnetic fields travel perpendicular to each other.By a change of one field, it causes the other one to change.
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What is an electric field? What i a magnetic field?
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A magnetic field exerts magnetic forces that can act on certain matierials. Produce when a charged particle moves. Every charged paricle has an electric field surrounding it. The electric field produces electric forces that can push or pull on other charged particles.
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