What are all the things we will measure?
We will count how many waves will travel along the tray and also time it, when the waves slow down and finally stop we will stop the clock
How will you make it a fair test
We made it a fair test by measuring the force of push accurately by using a ruler. Keeping the 2000 ml volume of water
How will I be safe?
We were safe by moving all chairs and stools away from our area. We never messed about and we concentrated on the experiment
What range of results will you take and why
Will we take “how many waves”, “pushing distance” and “time” Because they all link with one another and tell us different things. For instance the “how many waves” and “pushing distance” will hopefully tell us something. By that if you pushed at a distance of 100 cm and 50 waves were produced. And also if you pushed at 110 cm and 55 waves were produced then that tells you a lot about the link between the two. And time will tell how long we can see the wave for.
Preliminary Results
We tried a We never obtained any preliminary results, but this showed us that we needed to change our plan because what we were doing wasn’t working well. We were using a difference method to the “pushing” we were “dropping” We had many problems, The water kept spilling over the side.
Any changes while doing the experiment and why
No, there were no changes. Reasons were we felt
Is one set of results enough?
No, its not, because you don’t know if you done the first test correctly, and if it doesn’t follow a pattern you really need to do it again to see what has gone wrong with it. In our one we considered that it was right by our and the teacher’s judgement
Results
Calculations
The Highest pushing distance 40 divided by The longest time 24.80 = 1.6
This tells me that for every second. 1.6 waves are produced.
The lowest pushing distance 10 divided by the shortest time 11.34 = 0.88
So what this tells me is for every 10 cm of pushing distance, less than 1 wave is produced every second, and for the pushing distance 40cm, nearly 2 waves are produced every second, an obvious difference
What happened in our investigation
Our investigation did have problems, for one we had to keep measuring the water to obtained the 200 ml of volume, we kept doing this because when we push it too hard,
What our results tell me
The results tell me that the bigger the force the longer the waves will last.
Was this what I expected to happen,
Yes, because we all know if we push things harder, or make something quicken up, then the product we are working with will produce more of a frequency. So this works with waves. So what I have said here corresponds to my question,
How Accurate were we?
We were not 100% accurate. The water kept spilling over the top. So the volume kept dropping. We never really stopped the time when we had to, partly us and the stopwatch fault.
Could we make the method better?
Yes I think we could have. Even though we made an effort with a preliminary experiment we could have done another one and has got some results.