Lights and Lasers Test Crossword
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
 
 
Down: 1) distance between one point on a wave and the nearest point just like it2) optical telescope that uses a double convex lens to bend the light and form an image at the focal point3) point on the optical axis of a mirror or lens where rays traveling parallel to the optical axis pass through5) optical telescope that uses a concave mirror to focus light and form an image at the focal point7) electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves9) device for amplifying light and focusing it into an intense beam12) lens that is thicker at its edges than in the middle13) number of wavelengths that pass a fixed point each second; expressed in hertz(Hz)15) electromagnetic waves with wavelengths that can be detected by human eyes17) particle that electromagnetic waves sometimes behaves like; has energy that increases as the frequency of the electromagnetic waves increase Across: 4) when a wave is reflected, the angle of incidence is equal to the angle of reflection6) bending of a wave as it changes speed in moving from one medium to another8) light waves bounce off a surface back to the light source10) degree to which something can be magnified11) arrangement of electromagnetic waves according to their wavelengths14) lens that is thicker in the middle than at its edges16) material through which a wave travels18) type of energy that comes to Earth from the Sun; can damage skin and cause cancer19) narrow beam of light traveling in a straight line20) transparent object that has at least one curved surface that causes light to bend21) distance along the optical axis from the center of a mirror or lens to the focal point
 

 

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