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Science L7 Waves and Sound
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Where do we experience the effect of waves everyday in our lives?
Light , sound, infrasound, heat, ultrasound, music, etc
When we talk of the pitch of sound, what are we meaning? Is it the loudness/softness of sound OR how high or low a sound is?
High and low
Can we hear ultrasounds? Yes OR no
No
What is the meaning of infrasound? Is it sound we cannot hear OR it is extremely soft sound
Soft sound
What is an example of a water wave?
Tsunami
In a sonic boom the aircraft is moving at the speed of sound? Yes or No
No
With the Doppler effect, must the source of sound be moving OR the person be moving OR can either be moving?
Either could be moving
What is this image showing about waves?
Interference of waves
What can we use ultrasound for in the medical field?
Sonography of a baby and other internal organs
If there is a sound of 90 dB's , is this an acceptable level of sound OR a high level of sound?
High
What is sound measured in?
Decibels
What do we measure the velocity of a wave in? Meters/second OR kilometers/second
M/s
If we talk about the frequency of a wave, what are we talking about?
How many waves in a certain time moving past a certain point
In this image, what is part B called?
Crest of the wave
In this wave what is the trough? The low point or the high point of the wave?
The low point
In a longitudinal wave there are parts called compressions. Is this where the wave parts are far apart or close together?
Close together
In a longitudinal wave there are rarefactions. They are the parts where the wave parts are close together OR far apart?
Far apart
What is a longitudinal wave? The movement of particles in one direction OR in many directions
One direction movement of particles
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