1) Which of the following objects is translucent? a) tree limb b) wax paper c) glass window d) book 2) You make a musical instrument by stretching four strings across a small box. Each of the strings is a different length. Some are tied tightly, while others have slack. Predict how the strings will sound when plucked. a) short & tight string = low pitch. long & loose = high b) short & tight string = high pitch. long & loose = low c) it does not make a difference d) both would be high pitch. 3) You tighten a string on your guitar. What effect will this have on the string? a) Its pitch will be lower. b) It will vibrate more slowly. c) It will make a softer sound. d) Its pitch will be higher. 4) The back-and-forth movement of matter a) frequency b) vibration c) volume d) pitch 5) Which surface would bounce back almost all the light that hit it? a) clear plastic b) mirror c) frosted glass d) water 6) Why does white light look like a rainbow when it exits a prism? a) The prism adds more kinds of light. b) The prism changes some white light into electricity. c) The prism is filled with many different colors. d) The prism separates white light into its component colors. 7) Number of vibrations per second a) pitch b) volume c) frequency d) vibration 8) How high or low a sound is a) pitch b) volume c) vibration d) frequency 9) Bending of light rays a) reflection b) concave lens c) convex lens d) refraction 10) How loud of soft a sound is a) pitch b) frequency c) volume d) vibration 11) A lens that is thinner in the middle and makes an object appear smaller a) convex lens b) concave lens c) refraction d) reflection 12) How are light and sound different? a) Light must travel through a medium. b) Light sometimes needs a medium to travel.  c) Sound needs a medium to travel and light does not. d) Sound does not need a medium to travel.  13) A lens that is thicker in a middle and magnifies an object. a) concave lens b) convex lens c) refraction d) reflection 14) Which instrument plays at a higher pitch? Why? a) Bass - longer strings b) Violin - shorter strings c) Bass - shorter strings d) Violin - longer strings 15) How are light and sound similar? a) Types of energy that travel as bumps. b) Types of energy that don't travel. c) Types of energy that travel as waves. d) Types of energy that are purple.

Light and Sound Review

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