Aidan Gill, Heidi Foxford and, Dorothy Warren Solutions for Chapter: Sound, Exercise 2: Exercise 2
Aidan Gill Science Solutions for Exercise - Aidan Gill, Heidi Foxford and, Dorothy Warren Solutions for Chapter: Sound, Exercise 2: Exercise 2
Attempt the practice questions on Chapter 8: Sound, Exercise 2: Exercise 2 with hints and solutions to strengthen your understanding. Cambridge Lower Secondary Science Stage 8 : Workbook solutions are prepared by Experienced Embibe Experts.
Questions from Aidan Gill, Heidi Foxford and, Dorothy Warren Solutions for Chapter: Sound, Exercise 2: Exercise 2 with Hints & Solutions
Choose which of these activities should only be carried out if we wear ear protection.
Choose the correct estimate of the speed of sound in air.
Describe what happens when we hear an echo.
Engineers testing steel rails can use a microphone to record the sounds of an approaching train. The microphone records the sound of an approaching train for many seconds before the engineers can hear it themselves. The results are shown on an oscilloscope screen. Use your knowledge of the speed of sound to explain what the engineers observe.
Bats use sound to steer around obstacles in the dark. The bats produce sounds to bounce off objects. The diagram shows the face of a horseshoe bat.
Suggest why this bat’s face is shaped this way.
The diagram shows how a wave can be represented on an oscilloscope screen.
Complete the diagram using the words from the list.
[wavelength, frequency, amplitude, period]
From the following sound-frequency combinations, select the sounds that a human should be able to hear.
Anastasia is pregnant and has been asked to go to the hospital for an ultrasound scan. Anastasia does not know what ultrasound is. She is worried about the test. Write a short explanation of ultrasound for her. Make sure you include an explanation of why the test will not damage her baby.
