# Paper Airplanes and Investigating Variables Voc.

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aerodynamic
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having a shape that reduces the amount of airflow around an object so that it travels faster and more smoothly.
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airplane
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a fixed winged aircraft powered by the thrust from an engine. Paper airplanes glide briefly through the air.
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average
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a number that is calculated when you add quantities together and then divide by the number of quantities.
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constant
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a part of the experiment that always stays the same.
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constraint
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the limits or rules of a task,
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control
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the variable or variables in an experiment that do not change,
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data
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record and facts collected in an experiment or demonstration. These are used to help make decisions about the experiment or design.
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flight
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the process of traveling through the air.
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human factor
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the part of an experiment that is difficult to control as it relies on human interpretation, measuring, or ability.
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modification
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changing a part of something
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predict
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to declare what you believe will happen in an experiment, based on knowledge or scientific understandings.
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variables
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the parts of an experiment that can be changed.
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purpose
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the reason you are doing the investigation/ experiment. What are you wondering? What do you want to learn? What would you like to try and find out?
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research
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before you set up your experiment, find any possible background info, who, what, where, when, why and how
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hypothesis
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what your investigation will prove, a prediction, an educated guess. not a wild answer
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control group
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this group includes the part or parts of the experiment that are left unchanged. The conditions the scientist wants to remain the same during the experiment
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experimental group
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this group includes the part or parts of the experiment that are changed and tested. The results are then compared to the control group to determine what changes have taken place
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PROCEDURE: variables
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When conducting a test, scientist change certain things then observe how they affect the experiment. these things are called ____. An experiment usually has two
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independent variables
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the factor that is changed and tested in the experiment. A good experiment has only one. What can i change? what causes the change
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dependent variable
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the factor that responds the change. The change is measured and recorded in metric units, It is caused by changes in the independent variable
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analyse data
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study the results of your experiment. decide what it means. This info can then be used to help you draw a conclusion about what you learned in your investigation
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conclusion
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the final step of the scientific method and to communicate your results and how they match up with your hypothesis, Scientist do numerous trials before saying an experiment is proved

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