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**Introduction Media Project**

By: Kyle Matz, Grant Culbreth, and Matt Doehring Pd. 5&6

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**What is a conversion factor?**

A number used to multiply or divide another number to change one system of units to another.

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**How 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.

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**An example of a conversion factor**

Convert 5.27km to Centimeters. 5.27km X 103 cm km Old unit cancels out = cm Don’t Forget about Significant Figures!!!!!! 5.27 X 105 cm Old unit cancels out

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**Significant 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.

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**Determine 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

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**Rounding Sig Figs Determine the sig figs in each of the numbers.**

3.24 X 2.365 sig figs sig figs The 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

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**Example usage of the scientific method**

PROBLEM HYPOTHESIS No 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. EXPERIMENT CONCLUSION Check 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.

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**Does 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.

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**Variables Independent Variables are the variables that you control.**

Dependent variables are the variables that depend on the independent variables.

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**Independent Variable (you control) **

Dependent Variable (depends on time) Mass (g) Time (s)

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**Put the independent variable on the x axis. **

Put the dependent variable on the y axis. Mass (g) Time (s)

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Time vs Distance Distance (m) Time (s) Since the line is straight the relationship is “linear”. The equation is y=mx+b

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Time vs Distance Distance (m) Time (s) Since the line curves upward the relationship is “exponential”. The equation is ax^2+bx+c.

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Time vs Distance Distance (m) Time (s) Since the line curves downward from the top the relationship is an “inverse”. The equation is y=a/x

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