Problem - A question to be considered, solved or answered
Observation - An observation is the act of noting and recording something with instruments.
Hypothesis - A hypothesis is a tentative explanation that accounts for a set of facts and can be tested by further investigation.
Experiment - An experiment is a test under controlled conditions that is made to demonstrate a known truth, or examine the validity of a hypothesis.
Conclusion - A conclusion is the result or outcome of an act or
Theory - An assumption based on limited information or knowledge.
Variable - Something that changes.
POHEC - The mnemonic device used to help you remember the steps of the scientific method.