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Definition
| the accumulation of excess electrical charge |
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Term
| law of conservation of charge |
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Definition
| charge can not be created or destroyed, only transferred |
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Definition
| a material in which electrons are able to move easily |
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Definition
| a material in which electrons are not able to move easily |
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Definition
| the rearrangement of electrons on a neutral object caused by a nearby charged object |
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Definition
| a closed path that electric current follows |
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Definition
| the tendency for a material to oppose the flow of electrons |
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Definition
| current(I)=voltage(V)/resistance(R) |
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Definition
| the properties and interactions of magnets |
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Definition
| exerts a force on other magnets and magnetic materials |
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Definition
| where magnetic force is the strongest |
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Definition
| what causes a compass to work |
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Definition
| all magnetic materials have these, if they are lined up then the material is considered a magnet |
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Definition
| a temporary magnet made by wrapping a wire coil carrying a current around an iron core |
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Definition
| For an electromagnet the ________ is the wire wrapped around the iron core |
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Definition
| increases or decreases the voltage of an alternating current |
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Definition
| a repeating disturbance or movement that transfers energy |
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Definition
| the matter that waves go through, they can be solid liquid or gas |
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Definition
| waves for which the matter in the medium moves back and forth at right angles to the direction that the waves travel |
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Term
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Definition
| waves for which the matter in the medium moves back and forth in the direction of the wave |
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Definition
| the less dense fraction of a compressional wave |
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Term
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Definition
| the distance between one point on a wave and the next point just like it |
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Term
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Definition
| the denser part of a compression wave |
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Definition
| the highest point on a transverse wave |
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Definition
| the lowest part of a transverse wave |
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Definition
| the number of wavelengths that pass a fixed point in a second |
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Term
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Definition
| the amount of time it takes for one wavelength to pass a fixed point |
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Definition
| the distance from the crest/trough to the line of rest |
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Term
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Definition
| when an object causes a wave to change direction |
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Term
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Definition
| when two or more waves overlap |
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Term
| constructive interference |
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Definition
| when two waves combine to make one bigger wave |
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Term
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Definition
| when two waves cancel each other out and create a smaller wave |
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Term
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Definition
| travels fastest in solids, and slowest in gases |
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Term
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Definition
| the amount of energy that flows through a certain area in a specific amount of time |
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Definition
| the human perception of sound intensity |
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Definition
| a unit on the scale for sound intensity |
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Definition
| how high or low a sound seems to be |
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Definition
| waves that have sound frequencies above 20,000 Hz |
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Definition
| waves that have frequencies below 20 Hz |
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Definition
| the change in pitch or wave frequency due to a moving wave source |
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Definition
| sounds in a deliberately regular pattern |
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Definition
| sounds waves bouncing off of things |
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Definition
| the process of location objects by emitting sounds and interpreting the sound waves that are reflected back |
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Definition
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Definition
| a system that uses the reflection of underwater sound waves to detect objects |
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Definition
| Waves are reflected off of targeting organs and tissues |
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Term
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Definition
| An _____ material is one that absorbs or reflects all light and does not transmit any light |
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Term
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Definition
| allows some light to pass through it |
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Term
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Definition
| transmits almost all of the light striking it |
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Term
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Definition
| light waves bouncing off objects |
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Definition
| light waves bouncing off objects |
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Definition
| reflection of light waves from a smooth surface, like glass |
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Definition
| reflection of light waves from a rough surface, like a rock |
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Definition
| says the angle at which a light waves strikes a surface is the same as the angle at which it is reflected |
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Definition
| when light waves changes speed as it passes from one material to another |
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Definition
| a property of a material that indicates how much light slows down when traveling in the material |
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Term
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Definition
| caused by the air at ground level being much hotter than the air above it |
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Term
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Definition
| help with night vision, and help with peripheral vision |
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Term
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Definition
| help with the perception of color |
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Term
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Definition
| They are three types of cones; red cones enable us to see reds and orange/yellow (the long wavelength), green cones help us to see yellows, greens, and blues (the medium wavelengths), and blue cones respond to blue/indigo and violet (the short wavelength). |
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Term
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Definition
| a colored material that is used to change the color of other substances |
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Definition
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| primary colors of pigment |
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Definition
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Term
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Definition
| produced when a small coil of metal (known as a filament) is heated until it produces light |
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Term
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Definition
| ________ light bulbs are coated with phosphors and filled with gas. The tube has electrodes at each end that give off electrons. When the electrons collide with electrons collide with the gas atoms, the give of ultraviolent light. The phosphors coated on the inside of the tube absorb the ultraviolent radiation and give off visible light |
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Term
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Definition
| work in a similar manner as fluorescent lights, except this time when electrons strike the gas molecule visible light is produced. The visible light produced is colored |
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