Light Energy
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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| light ray | a straight-line beam of light as it travels outward from its source
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| law of reflection | the angle between an incoming light ray and a surface equals the angle between the reflected light ray and the surface
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| opaque | completely blocking light from passing through it
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| transparent | letting all light through, so that objects on the other side can be seen clearly
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| translucent | letting only some light through, so that objects on the other side appear blurry
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| polarization | allowing light vibrations to pass through in only one direction
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| refraction | the bending of light rays as they pass from one substance into another
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| concave lens | a lens that is thicker at the edges than at the middle; as it curves inward, it spreads light rays apart, making images appear smaller
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| convex lens | a lens that is thicker at the middle than at the edges; as it curves outward, it brings light together, making images appear larger
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| prism | a cut piece of clear glass (or plastic) with two opposite sides in the shape of a triangle or other geometric shape
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| spectrum | a band of colors produced when light goes through a prism
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| primary color | red, green, or blue; mixing these colors can produce all the colors of the spectrum
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| primary pigment | magenta, cyan, or yellow; materials with any of these colors absorb one primary color of light and reflect the other two
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| electromagnetism | the production of magnetism by electricity (and the production of electricity by magnets)
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| electromagnetic spectrum | all the wavelengths of visible and invisible light in order, from short(gamma rays) to long(radio)
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| laser | a device that produces a thin stream of light of just a few close wavelengths
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
dionnej
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