Chapter 1- The Nature of Science
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Transcript of Chapter 1- The Nature of Science
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For the first page in your notebook, illustrate what you think science is!
Chapter 1- The Nature of Science
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How do we “do” science?Scientific Method
State the problemGather informationForm a hypothesis/state the research question
Variables: dependent, independent Constants and controls
Test the hypothesisAnalyze dataDraw conclusions
Bias-occurs when what the scientist expects changes how the results are viewed.
Complete the flip chart on scientific method in your notebook!
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Law vs. Theory –a theory can be used to explain a law!
Theory Law
Explanation of things or events based on knowledge gained from many observations and investigations.
NOT a guess!CAN be modified!Examples: Big
Bang
A statement about what happens in nature that seems to be true all the time.
They do NOT explain why.
Examples: gravity
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Measure up!
Precision Accuracy
How closely measurements are to each other and how carefully measurement are made.
Compares a measurement to the real or accepted values.
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Measurement-SI UnitsBased on multiples of 10Standard is the kilogram kept in France!Meter is base unit of lengthSecond is base unit for timeKelvin is base unit for temperature
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QUIZ! Write the answers in your notebook.A gram is about the size of a (apple, dime,
pineapple)?A meter is about the height of a (door,
counter, seat)?Water freezes at _____C and boils at
_________C.The height of a tall man is about 200 ____.Normal body temperature is ____CThe thickness of a dime is about
________mm
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Metric PrefixesCopy Mega to nano in your notebook
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Converting Metric to Metric
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Video Conversion between metric units | Metric system unit conversion | Khan Academy
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Dimensional AnalysisA conversion factor is a ratio that is equal
to one and is used to change one unit to another .
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Homework!Find your favorite recipe.Convert from English units to metricTurn in both the English recipe and metric
version!
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Volume MassVolume-the amount of
space occupied by an objectV=l x w x h1mL = 1 cm(cubed)
Create a density column in your notebook!
Mass- is a measurement of the quantity of matter in an object.
Density- is the mass per unit volume of a materialMeasured in a
derived unit: g/cm(cubed)
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TemperatureCelsius
0, 100Body temp is 37Fahrenheit32, 212Body temp is 98.6
The SI unit for temperature is Kelvin (K)
0 is coldest possible temp also known as Absolute Zero. (-273 C!!)
Water boils at 373 K
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GraphsA graph is a visual display of information or
dataLine graph-can show any relationship
where the dependent variable changes due to a change in independent variable.
Bar graph-comparing informationCircle graph-shows how some fixed
quantity is broken down into parts.