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Sample Light Theme Unit Worksheet
Sound Theme Unit

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Name _____________________________

Date ___________________

Light
(Answer ID # 0997978)
Complete the puzzle.

8	9									5				19
					7				4					20
												18
							21
		10	11
												2
								12			1
				6
		17												3
						13
						14							16
								15

convex	violet	translucent	red
rainbow	opaque	white	heat
reflection	refraction	vacuum	light
prism	wavelengths	fluorescent	mirror
concave	transparent	plane	raindrops
speed	spectrum

 

Down 1.   The color that has the shortest wavelength. 2.   The color that has the longest wavelength. 3.   In an incandescent light bulb, approximately 98% of the electricity used is converted into this form of energy. 4.   The change in direction that occurs when a light ray bounces off of a surface. 5.   The bending of light rays as it passes from one material into another. 6.   In an incandescent light bulb, approximately 2% of the electricity used is converted into this form of energy. 7.   The color of something is determined by the ____ of visible light that it reflects. 8.   A ____ light bulb contains a gas that gives off ultraviolet radiation when it is heated by electricity. This radiation strikes chemicals in the bulbs that glow to give off light. 9.   A ____ mirror causes an object to appear larger than it actually is. 10.   A ____ object does not reflect or absorb much light. You can see clearly through this type of object. 11.   When these act like prisms in the sky, rainbows may form.

Across 2.   An arc of colors that sometimes appears in the sky. The colors that can be seen with a spectrum are the same colors that make up this. 12.   A ____ mirror causes an object to appear smaller than it actually is. 13.   A ____ object reflects some light rays and also absorbs some light rays. You may be able to see something through this object, but it will not be very clear. 14.   An ____ object reflects or absorbs all light rays. You can not see through this type of object. 15.   The color of all of the sun's colors mixed together. 16.   Empty space that contains no matter. Light can travel through this. 17.   A solid object that can bend or reflect light. 18.   A smooth, shiny surface that is able to reflect light. 19.   A ____ mirror has a flat surface. 20.   Light rays travel at a ____ of approximately 300,000 km/s when traveling in a vacuum. 21.   The band of colors that can be seen when white light is broken up by a prism.

 

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Answer Key 0997978

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