Term
| Why is the theoretically lowest possible temperature -273.16 degrees C? |
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Definition
| All Motion of atoms stop. |
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Term
| What is radiation and where does it come from? |
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Definition
| Radiation is energy from high speed particles or waves. It comes from the earth. |
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Term
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Definition
| The ratio of the amount of heat required to raise the temperature of a unit mass of a substance by one unit of temperature to the amount. |
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Term
| What is the first law of thermodynamics? |
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Definition
| Neither matter nor energy can be created or destroyed. An observable law of nature that begs the question of origins. |
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Term
| Explain the difference between mechanical waves and electromagnetic waves? |
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Definition
Mechanical Waves:
1.Mechanical waves need a material medium for their propagation.
2.These waves are produced due to the vibrations of the particles of the medium.
3.They have low speed.
Electromagnetic Waves:
1.Electromagnetic waves do not need any material medium for their propagation.
2.They are caused due to change in electric and magnetic fields.
3.They have high speed. |
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Term
| Explain the relationship between vibrations and waves? |
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Definition
| vibrations are physical evidence of waves, such as a loud stereo shaking a table, sound waves cause vibrations |
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Term
| What happens when two waves are in the same place at the same time? |
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Definition
| They interfere. The interference will be constructive (create a greater wave) if they are in phase, they will interfere destructively if they are out of phase. |
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Term
| What determines whether the interference between two waves is constructive or destructive? |
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Definition
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