1) Sound travels quickest through... a) Solids b) Liquids c) Gases 2) Sounds are made up of... a) Ears b) Vibrations c) Nerves 3) The auditory nerve in the ear transmits sound to the brain through... a) Singing b) Waves of liquid c) Tiny hairs 4) The stirrup bone hits the ________ which is filled with liquid. a) Cochlea b) Quadriceps c) Ear canal 5) Sound travels in a _________________. a) straight line b) zigzag line c) curved line 6) Which animals use echolocation? Find 3 correct answers. a) dog b) bat c) snail d) dolphin e) cats f) whales

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