Curriculum
Course: Igcse Physics
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Curriculum

Igcse Physics

1. Motion, Forces and Energy

0/161 Dr Dabour Hub Science Diagram and Course Material

2. Thermal Physics

0/75 Dr Dabour Hub Science Diagram and Course Material

3. Waves

0/77 Dr Dabour Hub Science Diagram and Course Material

4. Electricity and Magnetism

0/119 Dr Dabour Hub Science Diagram and Course Material

5. Nuclear Physics

0/39 Dr Dabour Hub Science Diagram and Course Material

6. Space Physics

0/47 Dr Dabour Hub Science Diagram and Course Material
Quiz

3.4.2 Measuring the Speed of Sound – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
In the echo method, the distance the sound travels is
d / 2
d squared
d
2d
2.
Why is timing 20 echoes better than timing one?
It reduces percentage error from reaction time
It increases the speed
It removes wind
The sound is louder
3.
Sound takes 0.25 s to travel 85 m. The speed is
21 m s−1
340 m s−1
0.003 m s−1
85 m s−1
4.
A graph of distance against time for sound has a gradient equal to
amplitude
wavelength
frequency
speed
5.
Wind effects are reduced by
repeating in opposite directions
using a stopwatch
using higher frequency
using louder sound
6.
The time between microphones is 3.0 ms and the spacing is 1.0 m. The speed is
330 m s−1
333 m s−1
0.3 m s−1
3.3 m s−1
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Part of 3. Waves — see every lesson and quiz in this unit.
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