Which variable values should be the same for all groups in the experiment?

Biel believes that her plants grow so well because she is always playing music in her room. What is a question she might ask to test this?

Which variable should you know before you start your experiment?

Which variable do you test (the effects of) in a scientific investigation? Hint: This is the same variable that you will change for every group.

What would be an independent variable in an experiment where the testable question is, Which paper towel brand is the strongest?

An instrument which uses magnet to give direction is known as

What do magnets do?

A substance consisting of a coil of wire with an iron core and is only magnetized when an electric current flows through it is called

The north pole of one magnet attracts

You can use electricity to make a magnet.

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