How science works - Lesson 3

The size of the smallest scale on a measuring device is one way of describing

• Precision

• Accuracy

• Validity

• Fairness

• Repeatability

Which of the following best describes the ‘range’

• The max and min value of the independent variable only

• The difference between the max and min values

• The max and min value of the independent or dependent variable

• The max and min value of the dependent variable only

If you redo your experiment using the method and get the same results, your results are said to be

• Reliable

• Reproducible

• Repeatable

• Anomalous

The diagram shows 4 attempts to measure the length of a piece of wood. These results are

• Both accurate and precise

• Accurate but not precise

• Precise but not accurate

• Neither accurate nor precise

Carrying it your experiment again will

• Make your investigation valid

• Not make your investigation valid or repeatable

• Make your investigation valid and repeatable

• Make your investigation more repeatable

If someone else repeats your investigation in the same way as you and they get the same results the experiment is said to be

• Repeatable

• Valid

• Accurate

• Reproducible

Control variables are needed because they

• Do not make an experiment fair or reproducible

• Make an experiment more reproducible

• Make an experiment fair and reproducible

• Make sure that the only thing affecting the dependent variable is the independent variable

The diagram shows 4 attempts to measure the length of a piece of wood. These results are

• Precise but not accurate

• Accurate but not precise

• Both accurate and precise

• Neither accurate nor precise

The diagram shows 4 attempts to measure the length of a piece of wood. These results are

• Neither precise nor accurate

• Accurate but not precise

• Both accurate but not precise

• Precise but not accurate