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12 Cards in this Set
- Front
- Back
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Shadow |
a dark area or shape produced by a body coming between rays of light and a surface. |
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Transmit |
Transmission of light is the moving of electromagnetic waves (whether visible light, radio waves, ultraviolet, etc.) through a material. This transmission can be reduced, or stopped, when light is reflected off the surface or absorbed by the molecules in the material. |
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light |
the natural agent that stimulates sight and makes things visible. |
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scattering |
When light bounces off a surface in all directions not forming a symmetrical V as reflection does. This happens on a rough surface |
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reflection |
the throwing back by a body or surface of light, heat, or sound without absorbing it. This forming a symmetrical V.This only happens on a smooth surface |
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model |
a three-dimensional or two-dimensional representation of a person or thing or of a proposed structure, typically on a smaller scale than the original. |
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Moon phases |
The lunar phase or phase of the moon is the shape of the illuminated (sunlit) portion of the Moon as seen by an observer on Earth. The lunar phases change cyclically as the Moon orbits the Earth, according to the changing positions of the Moon and Sun relative to the Earth. |
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order of moon phases |
New moon,waxing crescent,first quarter,waxing gibbous,full moon, third quarter,waning gibbous,waning crescent,new moon |
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times the moon takes to revolve around the earth |
29.5 days |
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lunar month |
a month measured between successive new moons (roughly 29 1/2 days). (in general use) a period of four weeks. |
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lunar calendar |
A lunar calendar is a calendar that is based on cycles of the lunar phases. This can be contrasted with the Gregorian calendar, which is a solar calendar based on the revolution of the Earth around the sun. ... It is used mainly for religious purposes, but in Saudi Arabia it is the official calendar. |
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Absorption |
The light wave could be absorbed by the object, in which case its energy is converted to heat. The lightwave could be reflected by the object. And the lightwave could be transmitted by the object. |
