Describe the features of a standing wave, explain how standing waves are formed in strings and pipes, and calculate relevant wavelengths and frequencies.
Understand the link between the fundamental frequency and higher order harmonics.
Perform calculations involving beats.
Work from SciPad pages 10 to 30.
Sliders a and b represent the values of the frequencies of two sounds. Set these sliders to similar frequencies and see what effect it has on the overall sound.
Describe the concept and conditions that create diffraction.
Understand the concept of nodal and antinodal lines, and link these to sound, water and light waves.
Understand and perform calculations that link slit width, slit separation, wavelength, and angles in two point source interference and diffraction grating problems.
Work from SciPad pages 32 to 51.
Understand the differences between the apparent and source wavelengths and frequencies for a moving source.
Explain the Doppler Effect, and solve Doppler Effect problems that involve apparent frequency, apparent wavelength, the velocity of the wave and the velocity of the source.
Understand the concepts of Doppler red-shift, Doppler blue-shift and sonic booms.
Work from SciPad pages 54 to 73.
The blue dot represents a wave source. Click the play button on the slider labelled a and watch the wavefronts spread out from the source.
Slider v represents the speed of the source, relative to the wavespeed. Set this to different speeds, then play the animation and watch what happens to the waves as they spread out from the source.
Click the circle beside equation 4 to display a dot representing a stationary observer. Move sliders h and k to move the observer, and watch what happens to the observed wavelengths.
For all SciPad answers, scan the QR code at the back of the book.
Complete any Scipad exercises you haven't finished.
Work on these end of chapter review questions:
Standing Waves (pages 25 to 30).
Interference Patterns (pages 48 to 51).
Doppler Effect (pages 70 to 73).
Work on the practice exam in your Scipad (pages 74 to 80).
Complete the Physical Quantities List (below).
Work on the 2023 or 2024 NCEA exams (below).
(Exam Paper)
(Assessment Schedule)
(Exam Paper)
(Assessment Schedule)
3.3 PRACTICE TEST marking scheme:
TBC
Thursday 11th September, 8:30am