1. Graphing

2. Graph: Visual display of information or data
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3. Types of Graphs
Line: shows trends or how the data changes over time.
Bar : useful for comparing information collected by counting.
Circle: used to show how a fixed quantity is broken down into parts.

4. Independent Variable: on the x-axis Dependent Variable: on the y-axis
Factors of a Graph
Independent Variable: on the x-axis
Dependent Variable: on the y-axis

5. Measurement

6. The SI system is based on multiples of 10
(it’s the same as the metric system!)

7. Length - the distance between two points
Prefix
Symbol
Factor #
Factor Word
Kilo k
1000
Thousand
Hecto h
100
Hundred
Deca da 10
Ten
Base
--- 1
M, L, g
Deci d
0.1
Tenth
Centi c
0.01
Hundredth
Milli m
0.001
Thousandth
Length - the distance between two points

8. Distance Conversions How many millimeters are in 2.40 m?
How many meters are equal to 742 cm?

9. Distance Conversions How many millimeters are in 2.40 m? 2400mm
How many meters are equal to 742 cm?
7.42 m

10. Volume: The amount of space occupied by an object Formula
Volume = length x width x height
Units will always be unit3

11. Mass: a measurement of the quantity of matter in an object
Weight: the force of gravity on an object

12. Density: The measurement of the mass in a given volume.
Units are g/ml or g/cm3

13. Precision: Get the same answer over and over
Reliability
Precision: Get the same answer over and over
Accuracy: Answer is close to the actual value