a lightbulb in. Third head has an exclamation point in." width="" />Watch this video of a number of experiments being carried out.
a lightbulb in. Third head has an exclamation point in." width="" />
Making a scientific
close prediction A statement that describes what you expect to happen, according to scientific theory, during an experiment. involves saying what might happen.
Knowing which variables to control is important when designing experiments to find out if a prediction is right or wrong.
Identifying control variables makes sure that only the independent variable affects the dependent variable. This will ensure results from the experiment are
close valid An experiment is valid if it measures what it is supposed to be measuring. .
a lightbulb in. Third head has an exclamation point in." width="" />
What type of variable is changed during an experiment?
