ISA

Question 1

What is an independent variable

Answer 1

Something that is deliberately changed throughout the investigation

Question 2

Example of analysing/ draw conclusion/ describing the relationship

Answer 2

I found that there is a relationship between picking your nose and the amount of spots you have. The more you pick your nose the more spots you’ll have. For example, my results showed …….

Question 3

How to say if your results back up your investigation

Answer 3

My results did not/did back up the prediction. The prediction was that picking your nose more has no effect on the amount of spots you have. But I found the opposite to be true in my investigation.

Question 4

Equipment

Answer 4

What are you going to use. ALL OF IT. And why it is right for the job.

Question 5

What hazards there are

Answer 5

How to reduce them.

‘Girls hair may get stuck in the blades but to reduce this they can tie it up with a hair band.’

Question 6

Remember a table

Answer 6

Draw a clear table and do each reading 3 times to get an average therefore the reading will be more accurate.

Question 7

Evaluate your experiment

Answer 7

Suggest ways you could improve your experiment
• how the improvement would give you better data next time
• refer to your results… ‘My data wasn’t accurate enough because ten mass balance I used only measured in 1g steps. I could use a more sensitive one next time.

Question 8

What makes a good method.

Answer 8

Easy to read 
Key steps
Well later out 
Clear hypothesis 
Picture to show the investigation taking place 

A bad method will NOT have these.

Question 9

What is a controlled variable

Answer 9

Something that is unchanged throughout the investigation