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WorksheetsMeasuring the speed of sound in air and solids | Exit Quiz | Oak National Academy
Total questions: 6
Worksheet time: 7mins
Give the missing number in the following sentence. The accepted value for the speed of sound in air is (a) m/s.
Which two of the below would allow a result to be considered accurate?
If it is close to the true value
If repeat measurements cluster closely together in a small range
If it is repeatable and precise, and has been checked for random errors
If it is repeatable and reproducible, and has been checked for systematic errors
Starting with the measurement of distance, put the steps for the echo method of measuring the speed of sound into the correct order.
Use a trundle wheel to measure a distance of at least 100m from a vertical wall.
Two people should stand at that distance from the wall.
One person should make a sudden noise, the other starts a timer at the same time
The timer should be stopped when the echo is heard.
The speed of sound is calculated using (2 x distance to the wall)/time taken
Andeep and Sofia are 100 m from a wall. Andeep makes a sound, Sofia measures the time for the echo to return as 0.64 s. Their result for the speed of sound, to 2 significant figures, is (a) m/s.
Starting with the measurement of the rod length, put the steps for the method of measuring the speed of sound in a metal rod into the correct order.
Measure the length of the rod (L) with a meter rule. Wavelength will be 2L.
Suspend the rod using elastic bands and strike the end so the bar rings.
Use a frequency-meter to determine the frequency of the rod's oscillations.
Calculate the speed of sound in the bar by multiplying frequency and wavelength.
Alex and Jun suspend a 1.20 m long metal rod on elastic bands. Jun strikes the rod and Alex uses a phone app to find the frequency of the sound: 2675 Hz. The speed of sound in the rod is (a) m/s.
