INTRODUCTION+TO+IGCSE+WAVES+ACTIVITY

Back to IGCSE PHYSICS > WAVES > PROPERTIES OF WAVES =INTRODUCTION TO IGCSE WAVES ACTIVITY= Use the [|Wave on a String simulation] at PHET. Or download from Studywiz. media type="custom" key="13435108" **ACTIVITY ONE** Complete the tables:
 * 1) Play with the simulation and discover what happens when you alter all of the controls in turn.
 * 2) Set up the simulation as follows: Tension = high; Damping = zero; 'No end'; 'Oscillate'.
 * 3) Measure the speed of the wave using the formula speed = distance/time
 * 4) Investigate how the speed of the wave changes as you alter the frequency.
 * 5) Investigate how the speed of the wave changes as you alter the amplitude.
 * Frequency || Distance travelled/ cm || Time taken/ s || Speed/ cm/s ||
 * 25 || 80 ||  ||   ||
 * 50 || 80 ||  ||   ||
 * 75 || 80 ||  ||   ||
 * 100 || 80 || 1.36 || 58.8 ||

**CONCLUSION ONE** For a wave, when the frequency increases, the speed INCREASES/ DECREASES/ STAYS THE SAME. When the amplitude increases, the speed INCREASES/ DECREASES/ STAYS THE SAME.
 * Amplitude || Distance travelled/ cm || Time taken/ s || Speed/ cm/s ||
 * 20 || 80 ||  ||   ||
 * 40 || 80 ||  ||   ||
 * 60 || 80 ||  ||   ||
 * 80 || 80 ||  ||   ||

**ACTIVITY TWO** 90 80 70 60 50 40 30 20 10 || 16.5 || 1650 || **CONCLUSION TWO** For a wave, when the frequency increases, the wavelength INCREASES/ DECREASES/ STAYS THE SAME. The frequency is PROPORTIONAL/ INVERSELY PROPORTIONAL TO THE WAVELENGTH.
 * 1) Set up the simulation as before.
 * 2) For values of frequency between 10 and 100, measure the wavelength.
 * 3) Calculate the third column
 * Frequency || Wavelength/ cm || Frequency x wavelength ||
 * 100