● A hypothesis is a proposed explanation for a phenomenon
● A theory is a well confirmed type of explanation that we can’t see or get to. Some examples are that we are not alone in the universe and that god exists and evolution.
● A scientific law is a statement based on repeated experimental observations that describes some aspect of the universe.
● THe steps of the scientific method are, first observe second is form a hypothesis third is test your hypothesis, fourth is to analyze last is to communicate your results.
● it is important because it allows for other scientist to know if a hypothesis fails they don't have to wast time of theirs so they can try another hypothesis
● CHAPTER 2. a model is a visual or sound of something that is too big or too small or so they can save money and lives
● the three models are mathematical, physical, and conceptual model
● too big or too small or so they can save money and lives
● it is the system of units that almost everyone uses