Designing a Fair Test Flashcards

1️⃣ Familiarise yourself with the flashcards:

  • Look through all the flashcards to see what's on both sides.
  • Make sure you understand the information on each card. If something's unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

  • Look at the question or prompt on each card and try to remember the answer before flipping it over.
  • Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

  • Use spaced repetition: spend more time on the cards you struggle with and go over them more often.
  • Regularly review all the flashcards to help you better understand and retain the information over time.

Note: We may include questions that have multiple correct answers. It's useful to remember specific examples to understand these concepts better.

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What is meant by a fair test in science?

A fair test is an experiment where you change one factor and keep the rest the same. This lets you compare results in an honest way.

Why do scientists try to change only one factor in a fair test?

They do this so they can be sure that any difference in the results is caused by that factor.

In a fair test, what should you do with all the other factors that might affect the result?

You should keep them the same for all the groups or samples in the experiment.

When testing how light affects plant growth, give two things you should keep the same to make the test fair.

You could keep the type of plant and the amount of water each plant gets the same.

How does using the same equipment for all measurements help to make a test fair?

It makes sure that any differences in the readings are due to the factor you changed, not different tools.

Why should you measure at the same time or after the same time gap in a fair test?

Because if you measure at different times, changes might be due to timing, not the factor you are testing.

Before you do an experiment, what is one question you can ask yourself to check if the test is fair?

You can ask yourself if you are changing only one factor and keeping everything else the same.

A student tests two brands of fertiliser but gives one set of plants more water. Why is this not a fair test?

It is not fair because two things have changed, the fertiliser and the amount of water, so you cannot tell which caused any difference.

How does designing a fair test help you make a good conclusion in biology?

A fair test means your results are more likely to be correct, so your conclusion about what caused the change is more trustworthy.

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