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Final exam review – Fall 2013

Final exam review – Fall 2013. Perry Monday – Intro and Ecology. Scientific Method. -Ask a question/Observe -Hypothesize/predict -Experiment/Collect data -Analyze Data -Draw Conclusions -Repeat and Retest There is NO ONE ORDER!!!. Variables and controls. Independent variable --

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Final exam review – Fall 2013

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  1. Final exam review – Fall 2013 Perry Monday – Intro and Ecology

  2. Scientific Method -Ask a question/Observe -Hypothesize/predict -Experiment/Collect data -Analyze Data -Draw Conclusions -Repeat and Retest There is NO ONE ORDER!!!

  3. Variables and controls • Independent variable -- The condition in an experiment that is changed according to the researcher’s wishes; present in only the ex. group • Dependent variable -- A condition that the scientist observes or measures b/c of the change in the independent variable; measured in both control and ex. group • Controls: Conditions that remain constant in both the test group and the control group The control group does NOT have the independent variable in it Video clip of types of variables

  4. What are the controls? Temp, amount of H2O, light exposure, humidity • What is the independent variable? Color of light exposed to • What is the dependent variable? plant response (maybe growth)

  5. When constructing graphs, keep the following in mind: • Use line graphs to show changes over time frames DRY MIX is an excellent way to remember where to put the info on the x and y axes… • Use bar graphs to show comparisons at ONE point in time • Use pie charts to divide into percentages • ALWAYS give graphs a title, and label axes where appropriate

  6. Both of these are line graphs; the one above is a scatter plot with a line of best fit which shows OVERALL trends… The one to the left shows individual changes over time…

  7. Metric system • Metric Measurement with Bill Nye and PP inserts • Density – calculated by using Mass/Volume regular objects – g/cm3 irregular objects – g/mL

  8. Microscope

  9. Characteristics of Living Things(must have ALL 8 to be considered living…) 1. Made up of units called cells - organized 2. Reproduce like organisms 3. Have DNA 4. Grow and develop 5. Homeostasis 6. Obtain and use materials and energy 7. Respond to stimulus/environment 8. Evolve

  10. Prefixes to know… • Bio – dealing with life Poly -- many • Mono – one Ana -- away • Di – two Diplo -- double • Bi – two, twice double Haplo -- single • Eu – good, true Cyto -- cell • Pro – before Macro – large • Intra – within Inter -- between

  11. Levels of organization • Matter Atoms Elements • Compounds/molecules Macromolecules • Cells  organs  organ systems  organisms • Species Populations Communities  Ecosystems Biomes Biosphere

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