Exam Style Questions

Question 1

Why did the scientists include a control group in this study?

Answer 1

For comparison

Question 2

Which one of the following is an advantage of repeating each test three times and not do the test once:

Any anomalies can be identified

The results will be more precise

There will be no errors

Answer 2

Any anomalies can be identified

Question 3

Why did the student carry out the experiment three times at each temperature?

To make the experiment more accurate

OR

To prove the experiment was correct

OR

To show the experiment was more repeatable

Answer 3

To show the experiment was more repeatable

Question 4

The students decided to repeat the experiment.

Why?

Answer 4

To check for anomalies

Question 5

What did the student do with the anomalous result?

Answer 5

Ignored it

Question 6

The students measured 10 reaction times for each person rather than 3 reaction times.

Explain why?

Answer 6

To increase validity

Question 7

Suggest why measuring reaction time with a computer is more accurate than measuring reaction time with a stopwatch,

Answer 7

Time is very short.