A) impulse B) reaction force C) thermal energy D) mechanical Wave
A) artificial lights B) the high energy of the Sun C) a vacuum D) the energy of distant stars
A) microwaves B) visible light C) radio waves D) ultraviolet light
A) False B) True
A) longitidunal wave B) vibrational wave C) thermal wave D) transverse Wave
A) longitudinal wave B) transverse wave C) node D) interference wave
A) seismic waves B) light waves C) water waves D) sound waves
A) sound waves B) water waves
A) blue B) red C) green D) yellow E) violet
A) yellow B) violet C) red D) blue E) green
A) gamma rays B) radio waves C) infrared light D) ultraviolet light
A) x-rays B) ultraviolet light C) radio waves D) gamma rays
A) when the queen greets her subjects while cleaning B) mechanical waves C) electromagnetic waves
A) a path to lucky charms B) black light C) a gross brown colour D) white light
A) gamma rays B) radio waves C) x-rays D) ultraviolet light
A) Waves B) Vibrations C) Captured in our Ears D) Energy 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) There is a rainbow present in the sky. C) The waves are moving like the ripples in a pond from a rock D) A moving object is emitting sound continuously.
A) Solids B) Gases C) Space D) Liquids
A) Sound that bounces in all directions B) Sound bouncing back to you off a solid object C) A figment of your imagination D) Sound that DOES NOT bounce back to you
A) Hertz B) Intensity C) Amplitude D) Velocity E) Frequency
A) The unit of measure used to measure the loudness B) The unit of measure to measure tone quality C) The unit of measure that is used to measure wavelength D) The unit of measure used to measure frequency
A) Frequency B) Decibels C) Amplitude D) Speed E) It does not have a relation
A) 50 dB B) 100 dB C) 20 dB D) 200 dB E) 70 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) A mouse squeak to a lion's roar B) 50-50,000Hz C) 20-20,000Hz D) 100-100,000Hz E) 0-100Hz
A) a lower pitch B) a higher pitch C) a louder sound D) a softer sound
A) all directions B) in a straight line C) parallel to the source D) at right angles with the source
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) infrasonic C) ultrasonic D) sonic the hedgehog
A) ultrasonic B) infrasonic C) hydrasonic D) sonic the hedgehog
A) elephants B) all of the above C) ultrasound machine D) bats
A) ultrasound machine B) bats C) whales D) all of these
A) stops, restarts B) decreases, increases C) increases, decreases D) starts, stops
A) Echo Reverberation B) Echo Location C) Echo Detection D) No echos at all
A) wavelength B) amplitude C) frequency D) hearing sensitivity
A) 3 m/s B) 10 km/h C) 340 m/s D) 40 km/h
A) jet motor B) calm classroom C) rock music concert D) intense road traffic
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