Interactions may cause changes which are affected by different variables.

Hypothesis can be stated in the following form using the word "may". (Light may affect plant growth. If an object is dropped higher it may fall faster. )

An experiment can be created to identify variables and their effects on interactions by using if then thinking.

A hypothesis is an if then statement (but not all if then statements are hypotheses), is it tentative, relates one idea to another, and is testable.

A formalized hypothesis can be stated in the form. (If plant growth is related to the amount of light shining on it, then more light will increase the plant's growth.)