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Science Exam Review

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Question or Term
Answer or Definition
Hypothesis   Hypothesis is testable AND eplains the expected relationship between the independent and dependent variables. Often written in the "if...then..." format  
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Independent Variable   manipulated part of experiment, the ONE "thing" you are testing, x-axis, "If..." part of hypothesis MIX- manipulated, independent, x-axis  
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Dependent Variable   responding part of experiment, the outcome, the measurable data, might have more than one, y-axis, "Then..." part of hypothesis DRY- dependent, responding, y-axis  
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Controlled Variables   conditions kept the same between control and experimental group  
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Control Group   "standard", normal conditions-> used as baseline/comparison Independent variable NOT applied  
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Experimental Group   test group, Independent variable applied  
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Qualitative Observations   using specific and detailed adjective to describe  
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Quantitative Observations   using a number (measurement or count)  
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Inference   educated guess based on observations  
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What is the purpose of experimentation? Why is no experiment a failure?   The scientific method is a general set of guidelines that uses critical thinking to solve problems. TO LEARN SOMETHING! TO LEARN ABOUT SCIENCE!  
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Know the difference between Scientific Theory and Scientific Law   Scientific Law describes WHAT happens in nature Scientific Theory describes the process by which it happens (HOW)  
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Precision   how close two measurements are to each other  
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Accuracy   how lose measurements are to the target value, based on how well the equipment is calibrated, and IS IT CORRECT?  
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Length SI unit, instrument used   Meters (M); Meter stick  
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Area   Meters Squared (M2); Meter stick  
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Volume (Solid)   Meters Cubed (M3); Meter stick  
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Volume (Liquid)   Cubic Centimeters (cm3) Liters (L) Milliliters (mL); Graduated Cylinder  
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Mass   Kilograms (kg); balance  
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Density   g/mL g/cm3; g/ml-> triple beam balance g/cm3-> graduated cylinder/meter stick  
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Time   Seconds (s); stopwatch  
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Temperature   Kelvin (K); thermometer  
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Describe what makes a precise measurement ad accurate measurement?    
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What do you need besides a number when you are measuring?    
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In a given measurement, which digit is estimated?    
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Know what a graph should include and be able to reference the TALKS rubric.    
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How do graphs relate to experiments- in what way do they relate to the IDV and DV?    
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What is the order of scientific thingies from least to most reliable?   Least reliable-> Hypothesis (formal inference made prior to experimentation) Moderate reliability-> Conclusion (results of ONE experiment) Most reliable-> Scientific Theory, Scientific Law (results of MANY repeated experiments, well established)  
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