Pupil sheet · Waves in a ripple tank
Waves in a ripple tank — final check
Name ______________________ Date ____________
Work alone, with the lesson closed. Answer every question; there are no hints.
1. state / describe / give / define / calculate
(a) State what a wave transfers from place to place, and what it does not transfer. (b) Describe the difference between a transverse and a longitudinal wave, and give one example of each. (c) Define the wavelength and the amplitude of a wave. (d) 20 waves pass a mark in 5.0 s. They travel at 0.24 m/s. Calculate their wavelength. (e) Describe how to measure the wavelength of water waves in a ripple tank accurately.
(a) What a wave transfers
(b) Transverse and longitudinal
(c) Wavelength and amplitude
(d) The wavelength
(e) Measuring a wavelength
2. state / describe / deduce / determine / explain
(a) Straight wavefronts meet a flat barrier at 35° to it. State the angle between the reflected wavefronts and the barrier. (b) Water waves pass from shallow water into deep water. State what happens to their speed and to their wavelength. (c) In a ripple tank, straight waves pass through a narrow gap. Describe how the wavefronts change, and state one quantity that stays the same. (d) Supplement. Beyond a gap 3.5 cm wide, ripple-tank waves spread out in semicircles. Deduce the approximate wavelength of the waves. (e) Supplement. Waves from a passing ship travel at 3.0 m/s with a frequency of 0.50 Hz. Wind ripples travel at 0.56 m/s with a frequency of 2.8 Hz. Both pass the end of a long wall. Determine the wavelength of each, then state which waves bend further round the end of the wall and explain why.
(a) The reflected angle
(b) Shallow to deep water
(c) Through a narrow gap
(d) Supplement: the wavelength from the gap
(e) Supplement: round the end of a wall