Science ch. 6,9,14
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| conduction | transfer of energy through matter by colliding particles; takes place because the particles are always in constant motion
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| radiation | the transfer of energy in the form of electromagnetic waves
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| insulator | materials such as fleece or fiber glass; don't allow heat to move easily through them
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| convection | the transfer of energy by the motion of heated particles
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| nuclear fission | process of splitting a large atomic nucleus into 2 nuclei with a smaller mass
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| nuclear fusion | the process of fusing together 2 atomic nuclei with low masses to form one nucleus with a larger mass
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| chain reaction | an ongoing series of fission reactions
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| tracer | a radio scope that is used to find or keep track of molecules in an organism
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| critical mass | amount of fissionable material required so that each fission reaction produces approx. one more fission reaction
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| opaque | a material that absorbs or reflects all light
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| translucent | material that allows some light to pass through, but not enough to see objects clearly through it
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| transparent | a material that admits almost all of the light striking it so objects can be seen
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| index of reaction | property of material indicating how much light slows down when treaveling
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| mirage | image of a distant object that results when air at ground level is much warmer or cooler than the air layers above it making the image refract
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| pigment | colored material that absorbs some colors and reflects others
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| when is kinetic energy transferred? | as particles collide
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| what are good heat conductors? | solids particularly metals
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| convection currents | transfer heat from warmer to cooler parts of a fluid
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| what can convection currents create on earth? | rainforests and deserts
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| what makes a good insulator? | gasses such as air
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| vaccuum | a material that contains almost no matter to allow conduction or convection to occur
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| Nuclear Fusion can only happen when... | the nuclei are moving fast enough to get close to eachother
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| What are radio isotopes used as? | tracers to find or keep track of molecules in an oraganism
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| What must light and matter objects do to be seen? | reflect light
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| Reflection of light | a light wave strikes an object ad reflects
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| law of reflection | the angle at which light strikes a surface is the same as the angle it is reflected
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| regular reflection | reflection of light waves from a smooth surface
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| diffused reflection | reflection of light waves from a rough surface
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| Refraction of light | change in the speed of a light wave when it passes from one material to another
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| the more light is slowed... | the longer the index of refraction
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| index of refraction | indicates how much material reduces the speed of light
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| prisms | separate white light into visible spectrum based on wavelengths
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| What are colors determined by? | the wavelength of light an object reflects
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| objects appear to be white because... | they reflect all colors of visible light
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| objects appear to be black because... | they absorb instead of reflect all colors of visible light
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| filters | make objects appear different colors than they really are
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| seeing color | light enters the eye and is focused on the retina
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| cone | distinguish colors and detailed shapes; (cells) that are most effective in the daytime
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| rods | sensitive cells to dim light; most effective in nighttime vision
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| color blindness | results when one or more sets of cones don't properly work
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| pigment | colored material that absorbs some colors and reflects others
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| primary colors of light | red,green, and blue
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| primary colors of pigment | magenta, cyan, and yellow
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| What are the primary colors of light? | additive colors; they combine to form white
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| What are the primary colors of pigment? | subtractive colors; combine to form black
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Created by:
ChloeMJ
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