Practical Skills

Question 1

What is an independent variable?

Answer 1

The variable that is altered during a scientific experiment

Question 2

What is the dependent variable?

Answer 2

The variable being tested or measured during a scientific experiment

Question 3

What acronym can be used to remember independent vs dependent?

Answer 3

DRY MIX

Question 4

What does DRY MIX mean?

Answer 4

Dependent
Responding
Y - axis
Manipulated
Independent
X - axis

Question 5

When talking about validity, accuracy and reliability it should be…

Answer 5

Yes or no
THERE IS NO IN BETWEEN

Question 6

How do you find percentage error?

Answer 6

measured value/known value X 100

Question 7

What should be included when talking about validity?

Answer 7

Whether your experiment is measuring what it claims to measure.
How well your variables were controlled, did something else influence your results.
Did you use suitable equipment.

Question 8

What should be included when talking about reliability?

Answer 8

Has the experiment been repeated multiple times.
How close are the repeated results, are they consistent.

Question 9

What should be included when talking about accuracy?

Answer 9

How close is the measured result to the known result.