Sound Scavenger Hunt Answer Check

Match the following

• What are vibrations?

• No. (but some fighter jets can)

• Can most passenger planes fly faster than the speed of sound?

• light energy

• Sound energy cannot travel through

• areas that don't have matter, such as outer space

• Which travels faster: light energy or sound energy?

• back and forth movements in molecules or air or other matter

• Does sound travel faster through air or water

• Water

Match the following

• What units are used to measure a sound's frequency?

• 767 miles per hour (1,235 kilometers per hour)

• Your ear has nerves that sends sound signals to..

• hertz (Hz)

• Humans can detect sound vibrations with their ears and their..

• your brain

• What is the approximate speed of sound in dry air?

• decibels

• What units are used to measure the volume of sound?

• skin

Match the following

• You can only hear wind when it...

• blows against another object

• Underwater, dolphins can hear sounds that are over __away

• 20 and 20,000 vibrations per second (Hz)

• A human being can hear sounds with frequencies between...

• 12,000 Hz

• Most children can hear sounds up to 20,000 Hz. A 50-year-old can typically hear sounds up to...

• 15 miles (24 kilometers)

Match the following

• Name two objects that absorb sound

• sounds waves travel a long distance and then bounce off an object and back to your ear

• The loudest natural sound on earth came from...

• vocal chords

• If you put your fingers on your throat and sing a song, you can feel vibrations created by your...

• cloth and foam

• An echo is created when...

• a volcano eruption in 1883

How are bats, dolphins, and whales able to find food?

• By looking

• Echolocation

• They are given it by humans

Which one has a higher pitch?

• Cello

• Violin

Which sound wave has low pitch?

• a

• b

• c

• d