an oscilloscope is a piece of equipment that can display a representation of a sound wave.

a displacement-time graph shows how the displacement of one part of a wave changes as the wave moves forward.

the period of a wave is the time for one complete oscillation.

the frequency of a wave is the number of complete oscillations in one second.

the loudness of a sound wave is a measure of how loud it is.

Oscilloscope

Physics

Transverse waves

Representing transverse waves

Representing longitudinal waves

Measuring the speed of water waves from distance and time

Measuring waves on a string

The wave equation

Using the wave speed equations

Measuring water waves in a ripple tank

Measuring the speed of sound in air and solids

In the Electromagnetic waves unit, they will build on this knowledge to learn about the reflection and refraction of light, other types of electromagnetic radiation in the EM spectrum and the helpful and harmful effects of each type of radiation.

In the Waves unit, pupils learnt about the properties and propagation of transverse and longitudinal waves.

This unit covers wave motion, including amplitude, wavelength, frequency, and velocity. It explains transverse and longitudinal waves, reflection, and absorption. The focus is on measuring wave speed, and sound interactions, applying formulas, and conducting accurate experiments.

Measuring waves

What sort of graph is shown on an oscilloscope?

Physics11_v2

What type of sound causes the height of a graph on an oscilloscope to increase?

What type of sound causes the length of wave on a graph on an oscilloscope to increase?

What is the distance between two wave crests on an oscilloscope graph equal to?

An oscilloscope shows two complete waves on a screen and it takes 0.1 s for the line to move across the screen. What is the period of the wave?

The period of a wave is 0.05 s.  How many complete waves are seen on the screen of an oscilloscope if it takes 0.2 s for the line to move across the screen?

What does a loudspeaker do when it makes a louder sound?

What causes a soundwave to have a bigger amplitude?

What sort of sound has a bigger amplitude?

What does a loudspeaker do when it makes a higher pitched sound?

What causes a sound to have a lower frequency?

What sort of sound has a higher frequency?

Oscilloscope

Lesson outcome