Presentation on theme: "Science means “having knowledge”. It involves trying to solve problems or determine a hypothesis."— Presentation transcript:
Science means “having knowledge”. It involves trying to solve problems or determine a hypothesis.
hypothesis question. Scientists use the scientific method to test a hypothesis or answer a question.
Steps in the Scientific MethodScientific Method Identify a Problem State Observations about the Problem Form a Hypothesis Design an Experiment Data Collection Form a Conclusion Retest
IDENTIFY THE QUESTION/PROBLEM What question is being answered, problem solved, or hypothesis tested.
events Description of objects, events May include data from all five senses (touch/texture, smell, taste, sight, sound) Could be drawings, diagrams, written words opinionsDo not include opinions.
An educated guess about the results Must be testable Predicts an outcome to the problem Always support your idea with a reason! –(If….then…) Hypothesis
Experiment Design a controlled experiment to test your hypothesis and collect data »Develop a well planned series of procedures –Establish the control group and the experimental group –Identify your variables
Control Group Control Group: the part of the experiment that is left alone or “natural”. Used to compare back to.
Experimental Group: Experimental Group: the part of the experiment in which a factor or variable is changed.
Variables are parts of an experiment
Controlled variables (constants): NOT factors in an experiment that are NOT changed.
Manipulated (independent) variable: changed factors in an experiment that are changed. ONEGood experiments have only ONE manipulated variable.
Responding Responding (dependent) variable: measuring the factor that you are measuring.
All the information gathered while performing the experiment. May be quantitative (numbers) or qualitative. Can be organized into charts, graphs, or tables Data
Results/Conclusions: Analyze your data to determine the final outcome of the experiment What do you NOW believe as a result of the experiment or observations? Restate your hypothesis (or at least relate your findings to it) Support your claim with at least 2 pieces of data Use good explanatory language Conclusion
Share your results: Publish your findings so that others may benefit from your work.
Explanation of a set of related observations or events based upon well tested hypotheses. multipleVerified multiple times by detached groups of researchers. One scientist cannot create a theory, he/she can only create a hypothesis. The theory of evolution Examples: The theory of evolution
explainA statement of fact meant to explain, in concise terms, an action or set of actions. alwaysGenerally accepted to be true and universal, and can sometimes be expressed in terms of a single mathematical equation. Scientific laws are similar to mathematical postulates. They don’t really need any complex external proofs; they are accepted at face value based upon the fact that they have always been observed to be true. ExamplesThe law of gravity Examples: The law of gravity