measurement graphing
TRANSCRIPT
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
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• Length (how long)
- Measured in Meter (m)+ Kilometer (km)+ Centimeter (cm)+ Millimeter (mm)+ Micrometer (µm)
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• Mass (how much stuff)
– Gram (g)+ Kilogram (kg)+ Milligram (mg)
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• Volume (how much space)
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– Liter (l)+ Milliliter (ml)
• Time
– Second
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• Temperature (movement)
– Celsius– Kelvin
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• Estimation
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• Accuracy & Precision
– Accuracy = How close is it to real value– Precision = How close is each measurement
to each other
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• Mean, Median, Mode
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- 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
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- Line Graph
+ Draw Axis√ X “What you changed”
√ Y “What was measured”
+ Create Scale+ Plot Data+ Draw best fit line
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- Best Fit Line
+ Follow general trend+ Include as many points as possible+ Have same # of points above and
below
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- Identify Trends
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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