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