metrics
TRANSCRIPT
![Page 1: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/1.jpg)
Metric SystemMetric System
![Page 2: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/2.jpg)
Types of Measurements• Length-measure of distance
– Measured with a meter stick or ruler
• Volume-measure of how much space an object takes up– Measured with a graduated
cylinder, by water displacement, or by equation
• cube volume=length X width X height (LXWXH)
• Mass-technically a measure of matter, but here on Earth it is the same thing as weight– Measured with a triple-beam-
balance
![Page 3: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/3.jpg)
Metric System• The metric system is based
on a base unit for each measurement
• Length = meter• Volume = liter• Mass(Weight) = gram• Temperature = Celsius• Time = seconds
• Prefixes plus base units make up the metric system – Example:
• Centi + meter = Centimeter
![Page 4: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/4.jpg)
Metric System• The three prefixes that we will use
the most are:– kilo– centi– milli
kilo hecto deka
Base Units
metergramliter
deci centi milli
![Page 5: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/5.jpg)
Metric System• These prefixes are based on
powers of 10. • From each “step” is either:
• 10 times larger or
• 10 times smaller
kilo hecto deca
Base Units
metergramliter
deci centi milli
![Page 6: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/6.jpg)
Why 10 times larger?
– Units that are 10 times larger or smaller are easier to convert.
1 centimeter = 10 millimeters
1 mm
1 mm
1 mm
1 mm
1 mm
1 mm
1 mm
1 mm
1 mm
1 mm
1 cm
40
41
41
40
![Page 7: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/7.jpg)
Metric System• For each “step” to right,
you are multiplying by 10
1 liter = 10 deciliters = 100 centiliters
2 grams = 20 decigrams = 200 centigrams
kilo hecto deca
meterliter
gram
deci centi milli
( 1 x 10 = 10) = (10 x 10 = 100)
(2 x 10 = 20) = (20 x 10 = 200)
![Page 8: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/8.jpg)
Metric System• An easy way to move within the metric
system is by moving the decimal point one place for each “step”
1 meter = 10 decimeters = 100 centimetersor
1.00 meter = 10.0 decimeters = 100. centimeters
kilo hecto deca
meterliter
gram
deci centi milli
![Page 9: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/9.jpg)
Metric System• Now let’s try from meters to
kilometers:1600 meters = 160 decameters
16 hectometers 1.6 kilometers
kilo hecto deca
meterliter
gram
deci centi milli
![Page 10: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/10.jpg)
Metric System• If you move to the left in the diagram,
move the decimal to the left
• If you move to the right in the diagram, move the decimal to the right
kilo hecto deca
meterliter
gram
deci centi milli
![Page 11: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/11.jpg)
Clicker Question
• How many milliliters are in a 2 liter bottle of soda?
A. 0.002B. 200C. 2000D. 20
kilo hecto deca
meterliter
gram
deci centi milli
![Page 12: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/12.jpg)
Clicker Question
• How many kilometers do they run in a 1600 meter relay?
A. 160,000B. 160C. 16D. 1.6
kilo hecto deca
meterliter
gram
deci centi milli
![Page 13: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/13.jpg)
Temperature• Celsius Scale is based on water
– The freezing point of water is 0OC– The boiling point of water is 100OC
![Page 14: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/14.jpg)
Temperature Conversion
• The equations to convert between Fahrenheit and Celsius are:
°F = (1.8 x °C) +32°C = (°F-32) x 0.555
![Page 15: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/15.jpg)
Example
• If it is 80°F outside, what is the temperature in °C?
°C = (°F-32) x 0.555°C = (80-32) x 0.555
°C = (48) x 0.555°C = 26.6
![Page 16: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/16.jpg)
Clicker Question
• If a substance is 80°C, what is the temperature in °F?
°F = (1.8 x °C) +32
°F = (1.8 X 80) + 32 °F = (144) + 32
°F = 176
A.114B.176C.4608D.112
![Page 17: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/17.jpg)
Density• Density is calculated by dividing the
mass of an object by the volume.Density = Mass/Volume
• For example 1mL of water has a mass of 1g.
Density = Mass/VolumeDensity = 1g/1mLDensity = 1g/mL
• Objects with a density less than 1g/mL will float in water and objects with a density greater than 1g/mL will sink in water
![Page 18: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/18.jpg)
Clicker Question
• What is the density of a box with a mass of 40 g and a volume of 50 mL
D = mass/volume D = 40g / 50 mL
D = 0.8 g/mL
A. 0.8 g/mLB. 12.5 g/mLC. 90 g/mLD. Impossible
to Calculate
![Page 19: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/19.jpg)
Clicker Question
• What units would you use to measure the mass of your neighbor?
A. gB. mC. LD. kg
![Page 20: Metrics](https://reader036.vdocuments.mx/reader036/viewer/2022062405/555cfda9d8b42add648b5156/html5/thumbnails/20.jpg)
Clicker Question
• What units would you use to measure the length of your pencil?
A. mB. gC. kmD. cm