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| The angle between an incoming wave and an imaginary line drawn perpendicular to the surface of the barrier. |
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| A form of potential energy in which energy is stored in chemical bonds;e.g. energy stored in a battery or food. |
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| Energy that results from the change in motion or position of electrical charges. |
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| Energy produced by changing electric and magnetic fields. |
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| Fuel derived from ancient organic remains; e.g. peat coal, crude oil, natural gas. |
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| (1) The energy released by a fission or fusion reaction. (2) The binding energy of the atomic nucleus. |
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| To bounce back (e.g. light) from a surface. |
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| The bending of waves (light) as they enter a different medium. |
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| A wave transmitted through a medium. |
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| Visible light made by combining all the wavelengths in the visible light spectrum. |
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