Practical Investigations

Which variable is the one changed by the experimenter?

• Dependent variable
• Independent variable
• Control variable
• Uncontrollable variable

Which variable is the one measured by the experimenter?

• Dependent variable
• Independent variable
• Control variable
• Uncontrollable variable

Which variable needs to remain the same every time the test is conducted?

• Dependent variable
• Independent variable
• Control variable
• Uncontrollable variable

What is the most correct definition for the "hypothesis" of an investigation?

• A proposed prediction for what will occur in the practical

• A proven fact that is seen in the practical

• A question that needs to be answered in the practical

• A conclusion of an investigation in the practical

When writing a practical method BEFORE the investigation has been conducted, it should be in what tense?

• Future tense
• Past tense
• Present tense
• Perfect tense

Where should the units be in the results table?

• In the headings only

• Next to the recorded values only

• In the table title
• In the headings and next to the recorded values

True or false: The diagram of the experimental set up must include all the equipment used in the practical.

• True
• False

When writing the risk assessment, which of the following is an example of what NOT to include?

• Hazards relevant to the practical

• Logical precautions to take

• Stating "be careful" for relevant hazards

• Actions that are specific for the hazard if it occurred

What would be the best type of graph to use for how weight affects the speed of an object?

• Line graph

• scatterplot

• column graph

• pie chart

True or false: Practical investigations need a bibliography

• True

• False