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THE NATURE OF SCIENCE Biology
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and You https://youtu.be/PzwTxVncWrI
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STANDARDS OF MEASUREMENT https://youtu.be/-FUPU9lo7s0
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PrefixSymbolFactor NumberFactor Word Kilok1,000Thousand Hectoh100Hundred Decada10Ten Decid0.1Tenth Centic0.01Hundredth Millim0.001Thousandth Base METRIC SYSTEM
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Volume? Liter (L) milliter (mL) gram (g) kilogram (kg) milligram (mg) Mass? Distance? meter (m) kilometer (km) centimeter (cm) millimeter (mm) Base Units
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English SystemMetric System 1 inch 1 foot 2.5 cm 0.3048 meter 1 mile1.6 kilometer 1 cup 1 quart 4 quarts (1 gal) 0.24 liters 0.95 liter 3.8 liters 1 ounce 1 pound 28 grams 0.5 kilogram Distance Volume Mass
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khda BASEd c m KingHenry Died By Drinking Chocolate Milk 1. 20 km = ____ meters Decimal moves: k h da m = 3 times to the right = 20,000 m 2. 200 mg = ______ grams gram d c m = 3 times to the left = 0.2 g Examples: Metric Conversions kilohecto deca(da) BASE deci centi milli
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Practice Conversions Fun Sheet
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Unit = Celsius Freeze 0 o C Boil 100 o C Body 37 o C Room Temp 20-25 o C Temperature = 32 o C 212 o C 98.6 o C 70-80 o C
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EQUIPMENT
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Mass Triple Beam Balance Unit? Distance Meter Stick Metric Ruler Unit? Volume Graduated Cylinder Beaker Erlenmeyer Flask Unit? Microscope Glass Slide Cover Slip Random Test Tube Test Tube Clamp Petri Dish Pipette Syringe Scalpel Forceps Temperature Thermometer (Celsius) Hot Plate Unit? Time Stop Watch Unit?
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LABORATORY SAFETY
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Chemical Safety
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Fire Safety
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Safety Symbols
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THE SCIENTIFIC METHOD https://youtu.be/k2MhMsLn9B0 https://youtu.be/_7sSuhQ1_24
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Scientific Method 6 Steps: 1. Identify the problem/ Form a question 3. Hypothesis 4. Controlled Experiment 4. 2. Observations 5. Record and Analyze Data 6. Conclusion
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Maggots “appear” on Meat
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1. Problem/Question:
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2. OBSERVATIONS: (relevant to question)
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3. HYPOTHESIS: (educated guess) Has to be testable “If.., then…” statement
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4.EXPERIMENT - Controlled Experiment = only one variable is changed. - Variable = factors that can change.
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PROCEDURE Controlled Variables: Manipulated Variables: “Independent Variable” Uncovered jarsCovered jars Several days pass Maggots appear No maggots appear Responding Variable: “Dependent Variable” Keep the same Change intentionally Changes due to IV
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5.RECORD and ANALYZE DATA: - Quantitative = numbers by measuring or counting (Chart/Graph) - Qualitative = description (chart)
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6. CONCLUSION: “The Hypothesis was correct. Maggots form only when flies come in contact with meat.” -Hypothesis correct/incorrect -Statement of results - Errors and Improvements
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Several days pass Maggots appear No maggots appear Scientific Method 1. Question 2. Observe 3. Hypothesis 4. Experiment 5. Data 6. Conclusion If IV, then DV “Controlled” Variables
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Publish experimental results in a Scientific Journal. repetition and validity Allows?
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Theory = A well tested explanation that unifies a broad range of observations Other Theories?
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Law = A natural phenomenon that has been proven to occur invariably whenever certain conditions are met.
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GRAPHING https://youtu.be/zNCIDCr3HCw
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= a visual display of information or data Graph?
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Line Graph Bar Graph Circle/Pie Graph
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Independent Variable “X-axis” Horizontal Axis = “Y-axis” Vertical Axis = Dependent Variable ???
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Which factory had the least amount of defective Cars? How many did this factory have? B 17 per 1000 cars
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Between what 2 point of mileage does a car’s value decrease the most? How much value does a car’s value depreciate over this period? 20,000- 40,000 $4,000
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CHARACTERISTICS OF LIFE AND THEMES OF BIOLOGY https://youtu.be/juxLuo-sH6M
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Characteristics of Life Order Reproduction Growth and Development Energy Utilization Response to the Environment Homeostasis Evolutionary Adaptation
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Order Reproduction Growth and Development Response to EnvironmentHomeostasis Energy Utilization Evolutionary Adaptation
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THEMES OF BIOLOGY 1. Cell structure and Function 2. Reproduction 3. Metabolism 4. Homeostasis 5. Heredity 6. Evolution 7. Interdependence
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1. Cell structure and Function 2. Reproduction 3. Metabolism 4. Homeostasis 5. Heredity 6. Evolution 7. Interdependence
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Carcharodon carcharias 4. Homeostasis
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6. Evolution
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1. Cell structure and Function
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3000 teeth
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3. Metabolism 7. Interdependence
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2. Reproduction 5. Heredity
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Chap. 1: Biology in the 21 st Century Graphing -X and Y axes -IV and DV -Bar and Line Graphs Chapter 1 -The Study of life -Unifying Themes of Biology -Scientific Thinking and Processes -Biologists Tools and Technology -Biology and the Future Metric System -Base units (length, volume, mass) -Prefixes -Metric Conversions Equipment -Names -Use Safety -Chemical, Fire, Electrical Labs -Measurement -Lab Equipment Scientific Method -Purpose -Steps -Variables
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Vocabulary List Biospherehomeostasismeasurement Biodiversityevolutionaccuracy Speciesadaptationprecision Biologyobservationmicroscope Sciencedatagene Organismhypothesismolecular genetics Cellexperimentgenomics Metabolismindependent variable DNAdependent variable Systemconstantbiotechnology Ecosystemtheorytransgenics
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END
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To convert Celsius to Fahrenheit Example To convert 90 o C F F = (1.8 X 90) + 32 F = 162 + 32 F = 194 90 o C = 194 o F F = (1.8 x C) + 32 To convert Fahrenheit to Celsius Example To convert 82 o F C C = (F - 32) / 1.8 C = (82 - 32) / 1.8 C = 50 / 1.8 C = 27.8 82 o F = 27.8 o C
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