ISA Question help

  • 4 votes

Hello Guys.  For the ISA, a question that might come up is about the resolution. It may be ''What is the resolution of the measuring instrument you used to measure the temperature'' - In my case it's 1 degrees C. 

Then it asks, was this resolution appropriate for your investigation? How do I go about this question? 

By the way, my experiment is investigating the fat content of food.In a nutshell, My experiment involves burning food and measuring the temperature rise. 

Posted Tue 3rd July, 2012 @ 16:36 by DLF

2 Answers

  • 2 votes

Ok, so your resolution is 1 degrees C, the question is basically saying, do you think that this is a small enough measurement? Would it have been better to measure at 0.5 degrees C? Why/why not? Answer these questions and you should get the marks - that's what my teacher told me :)

Answered Sun 3rd March, 2013 @ 09:56 by Former Member
  • 2 votes

Alright, what that means is- is the resolution precise enough? What that means is that if you were measuring the tempreture rise of a anhydrous sodium carbonate solution with water (That was my question) with different amounts of water. My resolution would be in ml, as cl is too small to make any significant difference to my experiment and would pose no real noticeable change. Whereas measuring my water in litres would one be entirely wasteful but it would also make a too big of a change to note down accurately, it's just silly to do it in litres. So that's basically the gist of it.

Why are you using the measurements you are. Try to refer to your risk assessment whilest you do so.

Although it's just occured to me that this question was asked in 2012. So I'm basically answering for no one here.

But if this is you in this situation, message me for a more in depth description about anything on your ISA :)


Answered Mon 11th March, 2013 @ 18:35 by Ben V.