1) What do we call the vibration that propagates as an acoustic wave through a transmission medium such as gas, liquid or solid? a) song b) sound c) light d) wave 2) Sound plays a vital role in our daily living. Communication is one among of its uses. Can we also use sound in emergency response? a) No, because sound is used only for communication. b) No, because it leads others in panic if a loud sound will be produced. c) Yes, because a loud sound can drive away a strong typhoon or flood. d) Yes, because a loud sound can be the fastest way inform the community that a disaster might come. 3) Which of the following gives the correct order of speed of sound from slowest to fastest in the given material? a) air, steel, water b) steel, water, air c) water, air, steel d) air, water, steel 4) Which of the following describes sound wave? a) Oceanic wave b) Surface wave c) Transverse wave d) Longitudinal wave 5) Which of the following is NOT a property of wave? a) Amplitude b) Velocity c) Wavelength d) Distance 6) In what material does sound travel the fastest? a) Gas b) Liquid c) Solid d) Vacuum 7) Which of the following statements BEST describes the relationship between a sound and medium? a) Sound is affected by different media. b) Sound cannot pass in different media except in gas. c) Sound is affected by different molecules of each given material. Thus, it makes this travels fast and slow. d) Sound is not affected by different molecules of each given material. Thus, it makes this travels fast and slow. 8) What makes sounds travel faster in solid than in gas? a) The arrangement of molecules b) The arrangement of the container c) The temperature of each material d) The temperature of each container 9) Each object can produce a unique sound. Are all objects able to produce sound without producing any vibrations? a) No, because all objects are vibrating objects. b) Yes, objects can make sound without vibration. c) No, because to produce sound it requires vibrations. d) Yes, objects can produce sound with and without vibrations. 10) In which of the following materials does sound travel the fastest? a) Helium b) Sea water c) Spoon d) Fresh water 11) In which of the following does sound travel the slowest? a) Hardwood b) Helium c) Hydrogen d) Seawater 12) Karen was asked by her science teacher if the movement of sound can be faster in solid than in liquid. She answered yes. Is Karen correct? a) No, because sound travels faster in liquid than in solid. b) No, because solid and liquid have the same speed of sound. c) Yes, because solid components are more elastic than liquid. d) Yes, because the molecules are more compressed in solid than in liquid. 13) How do humans benefit from sound? a) It is used for respiration. b) It is used for circulation. c) It is used for communication. d) It is used for the decomposition 14) It is a measurement of how fast the sound wave vibrates. a) Loudness b) Amplitude c) Pitch d) Frequency 15) It is the measure of response of a sound by human ear. a) Pitch b) Loudness c) Frequency d) Amplitude

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