Science Starter! Perform the following conversions and dimensional analysis problems. Reflect your...
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Transcript of Science Starter! Perform the following conversions and dimensional analysis problems. Reflect your...
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
Graphing Basics
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
Non-Linear Graphs
# of bags # of Red Candies
0 0123456789
10
# of bags # of Red Candies
0 01 42 93 114 135 136 167 168 189 20
10 23
Area = ½ bh = ( ½ )(6)(14.5)
= 43.5