vocabulary words 1-8
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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The bouncing back of a particle or wave that strikes the boundry between two media. | Reflection
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The line perpendicular to a surface. | Normal
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Angle between an incident ray and the normal to a surface. | Angle of incidence
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Angle between a reflected ray and the normal to a surface. | Angle of reflection
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The angle of incidence for a wave that strikes a surface is equal to the angle of reflection. | Law of Reflection
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An image formed through reflection or refraction that can be seen by an observer but cannot be projected on a screen because light from the object doesn't come to a focus. | Virtual Image
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The reflection of waves in many directions from a rough surface. | Diffuse Reflection
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Persistance of sound, due to multiple reflections. | Reverberations
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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.
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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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