Science - Exam Mistakes

Question 0

Why do control variables have to be controlled?

Answer 0

So a comparison can be made without control variables affecting the results

Question 1

What decides if a graph should be a line graph or bar chart?

Answer 1

Bar chart for categoric data

Line graph for continuous data

Question 2

Describe one way that a method could be improved so that the results are more accurate

Answer 2

Repeat the experiment at each graph point

Use the results to calculate a mean value for each graph point

Question 3

What tells us that a result is anomalous?

Answer 3

The result doesn’t fit the pattern

Question 4

When it asks for a justified argument along with some advantages and disadvantages what do you write?

Answer 4

Advantages (half number of marks)

Disadvantages (half number of marks)

Yes / no and give 1 advantage and 1 disadvantage in justification

Question 5

Give a reason why the rate of energy transfer on a graph decreases

Answer 5

Gradient of line decreases