Echo Quiz (Theory)
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- Question 1 of 9
1. Question
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An is defined as a distinct sound wave from a surface.
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- Question 2 of 9
2. Question
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( i ) Amplitude of the wave in echo will .
( ii ) Frequency will stay the
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- Question 3 of 9
3. Question
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lambda = V
= / 3700
= cm ( final answer )
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- Question 4 of 9
4. Question
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Reflection of
Correct 1 / 1 PointsIncorrect / 1 Points -
- Question 5 of 9
5. Question
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( i ) 20 Hz – Hz
( ii ) Frequency of is always than the frequencies of an range of humans.
Correct 4 / 4 PointsIncorrect / 4 Points -
- Question 6 of 9
6. Question
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An ultrasound is a wave comprising compressions and greater than 15 – kHz.
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- Question 7 of 9
7. Question
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Distance = time / 2
Distance between device and wall = 340 x / 2
= m ( final answer )
Correct 4 / 4 PointsIncorrect / 4 Points -
- Question 8 of 9
8. Question
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Wavelength is the distance between two points on a wave that are in .
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- Question 9 of 9
9. Question
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( i ) In waves sound like the of the medium move in a backward motion.
will cause the air molecules to in backward motion in the direction of the .( ii ) at A will be followed by a so they move further apart
Move in directions.
Correct 10 / 10 PointsIncorrect / 10 Points -
