1) Which sound wave shows the highest frequency? a) b) c) 2) What is frequency measured in? a) amplitude b) hertz c) amps d) m/s e) time 3) How is an echo made? a) When a sound is molded b) When sound reflects of an object c) Using high frequency sound 4) How are sound waves created ? a) By vibrating adjacent particles b) By waves creating ripples 5) Which state does sound travel fastest in? a) solid b) liquid c) gas d) the same 6) Why does sound travel fastest in this material? a) In solids because the particles are close together so pass on vibrations easier b) In liquid because the vibrations flow easier from one to the next c) In gas because the vibrations fly around with more energy d) in soldis because there are more particles to vibrate e) in liquid because there more particles than a liquid f) in gas because there are the least amount of praticles 7) Which part of the ear is labelled A? a) ossicles b) pinna c) cochlea d) ear drum e) ear canal 8) Which part of the ear is labelled B? a) ear canal b) pinna c) cochlea d) ossicles e) ear drum 9) Which part of the ear is labelled C? a) ear canal b) pinna c) cochlea d) ossicles e) ear drum 10) Which part of the ear is labelled D? a) ear canal b) pinna c) cochlea d) ossicles e) ear drum 11) What is the function of the ear drum? a) Vibrates when hit by a sound wave b) Protect the ear from loud noises c) To reflect sound waves that are high pitched 12) What energy transformations happen in both an ear and a microphone? a) Both amplify sound b) Change electrical energy into sound c) Both convert sound into electricity 13) Which animals can hear the highest frequency? a) elephant and mole b) cat and dog c) bat and dolphin d) human 14) Which animals can hear the lowest frequency? a) elephant and mole b) cat and dog c) bat and dolphin d) human 15) What is the highest frequency that cats and dogs can hear? a) 20 hertz b) 20 000 hertz c) 40 000 hertz d) 160 000 hertz 16) Which of the seven colours of the spectrum travels the fastest a) red b) yellow c) green d) blue and yellow e) indigo f) none all travel at the same speed 17) Why can light from the Sun reach Earth but not sound? a) Light needs a medium particles and sound doesn't b) Sound need particles and light doesn't' c) The sound is lost in space because of stars 18) Which objects allows all light to pass through, all is transmitted a) opaque b) Translucent c) transparent 19) Which object allows no light to be transmitted a) opaque b) translucent c) transparent 20) Which object allows some light to pass through, some is transmitted a) opaque b) translucent c) transparent

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