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You must have something to predict upon for instance 'what will happen when we add flour to vinegar?'

You need to predict what will happen by starting with :

If....then....because.

If we add vinegar to flour then.... because....

Q: What must you have for a hypothesis?

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to be useful in sciences a hypothesis must be

Yes. The data must not be allowed to influence the choice of the hypothesis.

to make a hypothesis must include if the and then the ex. if the salinity of the water increases then the more brine shrimp will hatch

created from data collected over a long period of time

Yes, because they must be clearly stated so that they can be tested.

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Yes. A hypothesis must be testable to become a theory.

to be useful in sciences a hypothesis must be

A correct or good hypothesis includes if then and because. A hypothesis must be a possible answer and must be testable

Is a proposed explanation for a phenomenon. A hypothesis must be tested for it to be a scientific hypothesis.

It must be possible to observe whether the hypothesis is true.

It must be possible to observe whether the hypothesis is true.

In Karl Popper's terminology there must be a way to prove a hypothesis false. That is what it means when scientists say that a specific hypothesis is a "testable hypothesis".

A scientific theory or hypothesis must be able to make predictions that can be tested. It must be possible to design an experiment so that there is one outcome if the hypothesis is true and a different outcome if it is false. This is what is meant by saying that a hypothesis is testable or falsifiable. If such as experiment is carried out and the outcome is not as predicted then the hypothesis must be rejected and replaced by an alternative hypothesis - or a modified version.

The Hypothesis Must Be Supported In Order For It To Become A Theory

The Hypothesis Must Be Supported In Order For It To Become A Theory

The hypothesis must be able to be proved true or false.

A scientific hypothesis must be testable and falsifiable in order for it to be valid.