What is Science?.

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Presentation transcript:

What is Science?

What is Science? The systematic study of the world, space, and the processes governing them. Scientists collect and analyze data to solve a problem. They use the Scientific Method

The Scientific Method The Scientific Method is a guide used to ensure that experiments and observations are done in an orderly and complete fashion. State the Problem Research the Problem Form a Hypothesis Test the Hypothesis Analyze the Data from the Experiment Form a Conclusion

Variables Variables are anything that can be changed within an experiment. There are 2 types of variables….

Independent Variables An independent variables is the part of the experiment that is changed by the person doing the experiment. Normally this is what is being studied. Examples: A scientist studies the impact of a drug on cancer. The drug A scientist studies the impact of withholding affection on rats. Amount of affection

Dependent Variables A dependent variable is the part of an experiment that is changed by the independent variable. Examples: A scientist studies the impact of a drug on cancer. The impact A scientist studies the impact of withholding affection on rats. The reaction of the rats

Control Group The control is the part of the experiment that is not changed and is used to compare the experimental results to. Examples: A scientist studies the impact of a drug on cancer. The group that did not get the drug. A scientist studies the impact of withholding affection on rats. The rats that got the normal amount of affection.

Reliable and Valid Reliable and valid experiments can be repeated and similar results will be obtained. All experiments should be repeated to ensure reliability.

Types of Descriptions Qualitative descriptions describe an object’s quality without using specific values. There are no numbers used in qualitative descriptions. Quantitative descriptions describe an object using specific values. There are numbers involved in quantitative descriptions. The fish is gold. The fish has two eyes.