science starter!
Post on 31-Dec-2015
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Science Starter!Perform the following conversions and dimensional analysis problems. Reflect your answer in scientific
notation.
1)30 in mm2)50 mi/hr m/s
Parts of a Graph
Variable that is controlled in an experiment (x - axis)Variable that is controlled in an experiment (x - axis)
Variable that is measured during an experiment (y - axis)
Variable that is measured during an experiment (y - axis)
“Best Fit” Line“Best Fit” Line
Types of RelationshipsLINEAR
- Straight line
- Direct Relationship
- Equation: y = mx + b
Slope [Steepness of line] = (Y2 – Y1) or RISE (X2 – X1) RUN
Graphing Data
“X”[Ind.]
“Y”[Dep.]
10 5
14 520 1026 15
Etc. Etc.
Data Chart
- Determine the independent and dependent variables
Plot Data
- Place a dot at the intersection of the two variables
Calculating Slope 1. Choose any two points on the line of best fit:
(not data points)
EX: ( y = 15, x = 30) and ( y = 0, x = 0)
1. Calculate slope by dividing the difference in the “y” values by the difference in the “x” values:
EX: Slope = (15 – 0) (30 – 0)
Slope = 0.5
Enclosed Area 1. Shade in the region in question:
EX: Find the area enclosed by the line of best fit and the horizontal axis between x = 0 and x = 30.
2. Use geometry and the values on the axis (NOT number of blocks) to find the area of the shape made.
EX: A = ½ bh = ½ (30)(15) = 225
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