measurement 7th
Post on 23-Jun-2015
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Scientific Measurements
Student will be able to1. Understand why scientist use a standard measure
2. Describe the standard units of measure
3. Describe common measure used in science
4. Analyze graphing in science
• Common Practice
44
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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
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