Presentation on theme: "Introduction Media Project"— Presentation transcript:
1Introduction Media Project By: Kyle Matz, Grant Culbreth, and Matt DoehringPd. 5&6
2What is a conversion factor? A number used to multiply or divide another number to change one system of units to another.
3How to do a conversion factor When starting a conversion factor put the given value over one. Then multiply that by the multiplier of the new unit over the multiplier of the old unit. Make sure to put the smaller number with the larger unit and visa versa.
4An example of a conversion factor Convert 5.27km to Centimeters. 5.27km X 103 cm kmOld unit cancels out= cmDon’t Forget about Significant Figures!!!!!!5.27 X 105 cmOld unit cancels out
5Significant Figures How you determine Significant figures? If the decimal point is Present, count from left to right until you are at the first non-zero number and anything after that is your sig fig. If the decimal point is Absent, count from right to left until you are at the first non-zero number and anything after that is your sig fig.
6Determine the sig figs in – 003.24 Start on the pacific because the decimal is PRESENT.Count left to right until first non-zero and there are 3 significant figures in this number.003.24
7Rounding Sig Figs Determine the sig figs in each of the numbers. 3.24 X 2.365sig figs sig figsThe answer in multiplication should be rounded to the same number of sig figs as the number that has the least sig figs.In this case the number would be rounded to 3 sig figs.3.24 X 2.365= rounded to 3 sig figs would give the final answer of 7.66
8Example usage of the scientific method PROBLEMHYPOTHESISNo water is coming out of the hose.The water is not on.There is a kink in the hose.If the problem is not solved, you must create a new hypothesis and experiment with it.EXPERIMENTCONCLUSIONCheck along the length of the hose for kinks.Look to see if the water is on.From my experiment I have concluded that the water was on, thus it is not the cause of the water not working.From my experiment I have concluded that there were kinks in the hose. This is why the water was not flowing through the hose.Your experiment is complete and your problem is solved.
9Does the scientific method detail a scientific law or a scientific theory? It defines a theory. There is no need to experiment with something that is already a law because it has already been proven.
10Variables Independent Variables are the variables that you control. Dependent variables are the variables that depend on the independent variables.
11Independent Variable (you control) Dependent Variable (depends on time)Mass (g)Time (s)
12Put the independent variable on the x axis. Put the dependent variable on the y axis.Mass (g)Time (s)
13Time vs DistanceDistance (m)Time (s)Since the line is straight the relationship is “linear”.The equation is y=mx+b
14Time vs DistanceDistance (m)Time (s)Since the line curves upward the relationship is “exponential”.The equation is ax^2+bx+c.
15Time vs DistanceDistance (m)Time (s)Since the line curves downward from the top the relationship is an “inverse”.The equation is y=a/x