measurement graphing

Scientific Measurements

Student will be able to1. Understand why scientist use a standard measure2. Describe the standard units of measure3. Describe common measure used in science4. Analyze graphing in science

• Common Practice

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• Measurement Systems

– English System (red)– Metric System

•Metric System Prefixes

– kilo (k) means 1,000 x– centi (c) means 0.01 x– milli (m) means 0.001 x– micro (µ) means 0.000001 x

45

• Length (how long)

- Measured in Meter (m)+ Kilometer (km)+ Centimeter (cm)+ Millimeter (mm)+ Micrometer (µm)

46

• Mass (how much stuff)

– Gram (g)+ Kilogram (kg)+ Milligram (mg)

48

• Volume (how much space)

50

– Liter (l)+ Milliliter (ml)

• Time

– Second

53

• Temperature (movement)

– Celsius– Kelvin

54

• Estimation

61

• Accuracy & Precision

– Accuracy = How close is it to real value– Precision = How close is each measurement

to each other

62

• Mean, Median, Mode

66

- Mean = Average- Median = Middle- Mode = Most often

• Graphs

- Graphs vs. Text

68+ Which is better?

At age 1, Sarah was 75 cm tall. By the time she turned 2, Sarah had grown 10 cm. By age 3, she had grown another 10 cm. At age 4, Sarah was 100 cm tall.

- Line Graphs

+ Example Experiment – Boiling Water

70

- Line Graph

+ Draw Axis√ X “What you changed”

√ Y “What was measured”

+ Create Scale+ Plot Data+ Draw best fit line

71

- Best Fit Line

+ Follow general trend+ Include as many points as possible+ Have same # of points above and

below

72

- Identify Trends

74

WorksheetCharacteristic Length Mass Volume Density Time Temperature

Definition Distance from end to end

Amount of matter

Amount of space

Mass in given volume

A limited period when an event occurs

Average movement of particles

SI Unit Meter Gram Liter m/l Second Celsius/Kelvin

Measuring Tool Ruler Scale Cup /Beaker

Mass and volume

Clock Thermometer