3.1. General properties of waves
A subsection of Physics, 0625, through 3. Waves
Listing 10 of 338 questions
shows the waveform of the note from a bell. A grid is given to help you take measurements. time State what, if anything, is happening to the loudness of the note. State how you deduced your answer to . State what, if anything, is happening to the frequency of the note. State how you deduced your answer to . How many oscillations does it take for the amplitude of the wave to decrease to half its initial value? The wave has a frequency of 300 Hz. 1. What is meant by a frequency of 300 Hz ? 2. How long does 1 cycle of the wave take? 3. How long does it take for the amplitude to decrease to half its initial value? A student says that the sound waves, which travelled through the air from the bell, were longitudinal waves, and that the air molecules moved repeatedly closer together and then further apart. Is the student correct in saying that the sound waves are longitudinal? Is the student correct about the movement of the air molecules? The student gives light as another example of longitudinal waves. Is this correct?
0625_s09_qp_2
THEORY
2009
Paper 2, Variant 0
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illustrates a sound wave travelling through the air. direction of wave travel On , mark clearly the direction in which the air particles are moving. Use to measure the wavelength of the sound wave. wavelength = cm The pitch of the sound wave is raised. State how the sound wave pattern would differ from that shown in . shows a section through a series of waves on water. direction of wave travel On , mark clearly the direction in which the water molecules are moving. From , measure the wavelength of the water wave. wavelength = cm The amplitude of the water waves is increased. State how the appearance of the water waves would differ from that shown in .
0625_s10_qp_22
THEORY
2010
Paper 2, Variant 2
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Questions Discovered
338