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Science Exam Review

Question or TermAnswer or Definition
Hypothesis Hypothesis is testable AND eplains the expected relationship between the independent and dependent variables. Often written in the "if...then..." format
Independent Variable manipulated part of experiment, the ONE "thing" you are testing, x-axis, "If..." part of hypothesis MIX- manipulated, independent, x-axis
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
Controlled Variables conditions kept the same between control and experimental group
Control Group "standard", normal conditions-> used as baseline/comparison Independent variable NOT applied
Experimental Group test group, Independent variable applied
Qualitative Observations using specific and detailed adjective to describe
Quantitative Observations using a number (measurement or count)
Inference educated guess based on observations
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!
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)
Precision how close two measurements are to each other
Accuracy how lose measurements are to the target value, based on how well the equipment is calibrated, and IS IT CORRECT?
Length SI unit, instrument used Meters (M); Meter stick
Area Meters Squared (M2); Meter stick
Volume (Solid) Meters Cubed (M3); Meter stick
Volume (Liquid) Cubic Centimeters (cm3) Liters (L) Milliliters (mL); Graduated Cylinder
Mass Kilograms (kg); balance
Density g/mL g/cm3; g/ml-> triple beam balance g/cm3-> graduated cylinder/meter stick
Time Seconds (s); stopwatch
Temperature Kelvin (K); thermometer
Describe what makes a precise measurement ad accurate measurement?
What do you need besides a number when you are measuring?
In a given measurement, which digit is estimated?
Know what a graph should include and be able to reference the TALKS rubric.
How do graphs relate to experiments- in what way do they relate to the IDV and DV?
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)
Created by: dingotiger