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