Copy of Experimental_design_notes 2025

Multiple Choice

Which of the following is the correct first step in the scientific method?

• State an Hypothesis

• Observe then Identify the Problem

• Design and carryout an experiment

• Make observations and record data

Open Ended

Why is it important to follow a structured scientific method when conducting experiments?

Multiple Choice

Which of the following best describes the difference between an independent variable and a dependent variable?

• The independent variable is what you measure, and the dependent variable is what you change.

• The independent variable is what you change on purpose, and the dependent variable is what you measure or observe.

• The dependent variable is always a constant, and the independent variable never changes.

• Both variables are kept the same throughout the experiment.

Multiple Choice

What is the purpose of constants in an experiment?

• To compare results between groups

• To keep certain factors unchanged for a fair test

• To measure the dependent variable

• To change the independent variable

Open Ended

Explain the role of a control group in an experiment and why it is important.

Multiple Select

Which of the following are important for ensuring the reliability of experimental results?

• Changing the independent variable only once

• Using repeated trials

• Measuring only the dependent variable

• Keeping constants throughout the experiment

Multiple Choice

Which of the following best describes qualitative data?

• It involves numbers and is measured.

• It is descriptive and involves adjectives or categories.

• It is always numerical.

• It cannot be categorized.

Open Ended

How do you think the scientific method helps in designing experiments effectively?

Multiple Choice

Which of the following is NOT a step in the scientific method as described in the lesson?

• State an opinion

• Gather information and do research

• Design and carry out an experiment

• Make observations and record data