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