Observe Ask Questions Create a Hypothesis Test your Hypothesis Display Data and results Explain your Results Ask for Peer Review

Scientific Method

Independent Variable (IV): The part of the experiment that you are changing in order to test your hypothesis.

Dependent Variable (DV): The part of the experiment that we are measuring (that is DEPENDENT on the other variable)

Controls: Anything in the experiment that we do not change. We keep it constant for the purpose of the experiment.

Identifying Variables and Controls

A hypothesis “If (independent variable), then (dependent

variable).”

Here is an example of a hypothesis: If the temperature of sea water increases,

then the amount of salt that dissolves in the water increases.

Form a Testable hypothesis:

Independent Variable: Temperature of Water Dependent Variable: Egg Cook Time Control: 1Tbsp salt is added to the water at

each temperature

Hypothesis: If the water temperature is higher then the eggs will cook faster.

Example: Observation: On some days my eggs cook faster than others.Question: Does egg cook time depend on the temperature of the water?