A) reaction force B) mechanical Wave C) impulse D) thermal energy
A) a vacuum B) artificial lights C) the high energy of the Sun D) the energy of distant stars
A) radio waves B) microwaves C) ultraviolet light D) visible light
A) True B) False
A) thermal wave B) vibrational wave C) longitidunal wave D) transverse Wave
A) interference wave B) longitudinal wave C) node D) transverse wave
A) water waves B) light waves C) sound waves D) seismic waves
A) sound waves B) water waves
A) yellow B) violet C) red D) blue E) green
A) red B) green C) blue D) yellow E) violet
A) infrared light B) radio waves C) gamma rays D) ultraviolet light
A) x-rays B) gamma rays C) radio waves D) ultraviolet light
A) electromagnetic waves B) mechanical waves C) when the queen greets her subjects while cleaning
A) a path to lucky charms B) black light C) white light D) a gross brown colour
A) radio waves B) x-rays C) gamma rays D) ultraviolet light
A) Vibrations B) All of these are correct C) Captured in our Ears D) Energy E) Waves
A) The waves are moving like the ripples in a pond from a rock B) A moving object is emitting sound continuously. C) The waves are really distorted in the front where the sound is and not in the back after the object moves away D) There is a rainbow present in the sky.
A) Solids B) Gases C) Space D) Liquids
A) A figment of your imagination B) Sound that DOES NOT bounce back to you C) Sound bouncing back to you off a solid object D) Sound that bounces in all directions
A) Hertz B) Frequency C) Velocity D) Amplitude E) Intensity
A) The unit of measure used to measure frequency B) The unit of measure that is used to measure wavelength C) The unit of measure to measure tone quality D) The unit of measure used to measure the loudness
A) Amplitude B) Decibels C) Frequency D) Speed E) It does not have a relation
A) 50 dB B) 70 dB C) 200 dB D) 100 dB E) 20 dB
A) False B) Neither C) True D) You can always hear no matter where you are E) The only place in space that you can hear is the moon
A) 20-20,000Hz B) 100-100,000Hz C) 0-100Hz D) 50-50,000Hz E) A mouse squeak to a lion's roar
A) a softer sound B) a lower pitch C) a higher pitch D) a louder sound
A) at right angles with the source B) parallel to the source C) all directions D) in a straight line
A) determined between two consecutive crests or troughs B) determined by how many particles move side to side C) determined by how loud it is D) determined between two consecutive compressions or rarefractions
A) infrasonic B) hydrasonic C) ultrasonic D) sonic the hedgehog
A) ultrasonic B) sonic the hedgehog C) hydrasonic D) infrasonic
A) bats B) elephants C) all of the above D) ultrasound machine
A) ultrasound machine B) whales C) bats D) all of these
A) starts, stops B) decreases, increases C) stops, restarts D) increases, decreases
A) Echo Location B) Echo Detection C) Echo Reverberation D) No echos at all
A) hearing sensitivity B) frequency C) wavelength D) amplitude
A) 40 km/h B) 10 km/h C) 3 m/s D) 340 m/s
A) jet motor B) calm classroom C) intense road traffic D) rock music concert
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