Presentation on theme: "Chapter 1- The Nature of Science"— Presentation transcript:
1 Chapter 1- The Nature of Science For the first page in your notebook, illustrate what you think science is!
2 How do we “do” science? Scientific Method State the problem Gather informationForm a hypothesis/state the research questionVariables: dependent, independentConstants and controlsTest the hypothesisAnalyze dataDraw conclusionsBias-occurs when what the scientist expects changes how the results are viewed.Complete the flip chart on scientific method in your notebook!
3 Law vs. Theory –a theory can be used to explain a law! Explanation of things or events based on knowledge gained from many observations and investigations.NOT a guess!CAN be modified!Examples: Big BangA statement about what happens in nature that seems to be true all the time.They do NOT explain why.Examples: gravity
4 Measure up!PrecisionAccuracyHow closely measurements are to each other and how carefully measurement are made.Compares a measurement to the real or accepted values.Draw in notebook
5 Measurement-SI Units Based on multiples of 10 Standard is the kilogram kept in France!Meter is base unit of lengthSecond is base unit for timeKelvin is base unit for temperature
6 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 ________mm1.Dime2.Counter3.0, 1004. Cm5. 376. 1 mm
7 Metric PrefixesCopy Mega to nano in your notebook
9 Video Conversion between metric units | Metric system unit conversion | Khan Academy
10 Dimensional AnalysisA conversion factor is a ratio that is equal to one and is used to change one unit to another .worksheets
11 Homework! Find your favorite recipe. Convert from English units to metricTurn in both the English recipe and metric version!
12 Volume Mass Volume-the amount of space occupied by an object V=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)Density column-why important in real world colored water, dawn, iso alcohol, veggie oilDensity lab from interactive notebookFlip chart in notebook with equations
13 Temperature Celsius The SI unit for temperature is Kelvin (K) 0, 100Body temp is 37Fahrenheit32, 212Body tempis 98.6The SI unit for temperature is Kelvin (K)0 is coldest possible temp also known as Absolute Zero. (-273 C!!)Water boils at 373 KComplete conversion worksheets
14 Graphs A graph is a visual display of information or data Line 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.