Waves

Question 1

How do waves transfer energy?

Answer 1

Waves are repeated vibrations that transfer energy by parts of the wave knocking nearby parts

Question 2

What do both transfers and latitudinal waves transfer?

Answer 2

Please transfer energy, but not the particles of the medium

Question 3

What does not the particles of the medium mean?

Answer 3

When a wave travels between two points, no matter actually travels with it. The point on the wave just vibrates back-and-forth about fixed positions. The object floating on the water, simply pop up and down when waves pass under them demonstrating that there is no movement of matter in the direction of the wave only energy

Question 4

How can I measure the speed of sound directly between two points

Answer 4

1- two people stand a distance of around 100 m apart distance should be measured with a trundle wheel
2- one person has two wooden blocks which they banged together above their head
3- the second person has a stopwatch which they start when they see the first the banging the blocks together, and when they hear the sound
4- this is then repeated several times and an average value is taken for the time speed equals distance overtime

Question 5

How can you measure the speed of sound using echoes?

Answer 5

1- a person stands about 50 m away from a wall using a trundle wheel to measure distance
2- person claps two wooden blocks together and listens for the echo
3- the person then starts to clap the blocks together, repeatedly and rhythm with the echoes
4- a second person has a stopwatch and starts timing when they hear one of the collapse and stop timing collapse later
5- the processes then repeated average time calculated
6- distance traveled by the sound between each clap and echo will be 2×50 m
7- total distance traveled by sound during the 20 claps will be 20×2×50
Speed - 2d/t

Question 6

Measuring the speed of sound using an oscilloscope

Answer 6

1- two microphones are connected to an oscilloscope and placed about 5 m apart using a tape measure
2- the oscilloscope is set up so that it triggers when the first microphone detects a sound, and the time base is adjusted so that the sound arriving at both microphones can be seen on the screen
3- 2 wooden blocks are used to make a large clap next to the first microphone
4- the slope is then used to determine the time in which the clock reaches each microphone and the time difference between them
5- this is repeated several times and an average time difference can be calculating using the speed distance

Question 7

Measuring wave speed in water

Answer 7

1- choose a calm, flat water surface, such as a lake or a swimming pool
2- 2 people stand a few meters apart tape measure
3- one person count down from three, and then this disturbs the water surface to create a ripple
4- 2nd person start stopwatch to find how long it takes for the first ripple to get to them
5- experiment is done repeated 10 times and an average value for the time is calculated using the equation