christian - working scientifically

Method

Describes how an experiment is carried out

Accuracy

How close a measurement is to its true value

Precision

How close repeat measurements are

Random error

Unpredictable mistake, usually made by humans

Systematic error

A mistake in an experiment that makes the measurements wrong by the same amount each time, this error is predictable

Independent variable

The variable that you change

Dependent variable

The variable that you measure

Control variable

The variable that you keep the same, to make the experiment fair

Repeatability

The same person can use the same method and get the same results

Reproducibility

A different person can use a different method and get the same results

Hazard

Something that can cause harm

Risk

A chance that a hazard will cause harm

Hypothesis

An idea about how something works that can be tested using experiments

Prediction

What will happen in an experiment if the hypothesis is correct