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