Wavelengths and Wave Properties

This video tutorial guides Grade 10 students through activities on determining the number of wavelengths between different points, calculating amplitude, and determining the wavelength of a wave. It uses examples from past exam papers to provide practical practice. The video explains how to count full and partial wavelengths, calculate amplitude using vertical distances, and determine wavelength using horizontal distances.

What is the main focus of the activity discussed in the video?

• Calculating the frequency of light

• Determining the number of wavelengths, amplitude, and wavelength of a wave

• Studying the properties of solids

• Determining the speed of sound

How do you determine the number of wavelengths between two points?

• By connecting two successive points in phase

• By measuring the distance between two troughs

• By counting the number of crests

• By measuring the height of the wave

What is the number of full wavelengths between points A and F?

• Two

• Three

• One

• Four

When calculating wavelengths from A to E, why might the result not be a whole number?

• Because the wave is not uniform

• Because A and E are not in phase

• Because E is at a crest

• Because the wave is moving

How many wavelengths are there from A to E?

• 2.0

• 1.5

• 1.75

• 2.5

What is the definition of amplitude in the context of waves?

• The frequency of the wave

• The speed of the wave

• The maximum disturbance from the equilibrium position

• The distance between two crests

How is the amplitude of a wave determined from a diagram?

• By measuring the horizontal distance

• By measuring the distance between two successive points in phase

• By measuring the distance from crest to trough

• By measuring the vertical distance from crest to equilibrium

What is the first step in determining the wavelength of a wave?

• Measure the vertical distance

• Count the number of waves between two points

• Calculate the speed of the wave

• Find the frequency of the wave

How do you calculate the wavelength once you know the number of waves and the distance?

• Subtract the number of waves from the distance

• Multiply the distance by the number of waves

• Divide the distance by the number of waves

• Add the distance to the number of waves

What is the wavelength if the distance between points A and H is 5 meters and there are 2.5 waves?

• 1 meter

• 2 meters

• 3 meters

• 4 meters