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