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