1) Part of the ear that helps to detect sound? a) cochlea b) eardrum c) auditory nerve d) impulses 2) In which things the sound travels the fastest a) metal b) air c) vacuum d) water 3) What we use for measure how loud the sound is? a) Hertz b) Decibels c) Frequency d) Amplitude 4) The sound can't travels in ... a) space b) air c) solid d) Water 5) Sound is there because of the a) vibration b) amplitude c) frequency d) volume 6) The pitch is high because of the .... a) high frequency b) high amplitude c) low frequency d) low amplitude 7) what type of sound wave a) longitudinal wave b) transverse wave 8) sound travels the fastest a) in air b) in water c) in steel d) in vacuum 9) The skill that bats and dolphin have a) echo b) echolocation c) sonar d) swim 10) what is an echo? a) sounds get louder b) Sounds get absorb c) sound is reflected off d) sound is travels in a space

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