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Bell RingerSept. 24th
- Grab your folder and answer the following on your Bell Ringer sheet:
Jason’s wife is sick. Jason works at a pharmacy. The drug that would cure Jason’s wife is too expensive for him to afford. He could steal the drug or he could save money to buy the drug at a later time, but his wife might die by then. What should Jason do?
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Metric SystemMeasurement What is it? Base unit How?
Length Distance between two points
Meter (m) Ruler ormeter stick
Mass Amount of matter in an object
Gram (g) Scale
Volume Amount of space in an object
Liter (L) Beaker orgraduated cylinder
Temperature Heat energy Degree Celsius(°C)
Thermometer
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Lesson 1: Length
T. Trimpe 2008 http://sciencespot.net/
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The Metric System
SI (System International)
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Metric System•Used by every country in the
world, except the USA.
•Always used by scientists.
•Based on the number 10, so it’s easy!
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Measuring Length
•Length= the distance between 2 points.
•Base unit= meter (m)
•Use rulers and meter sticks to measure
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Problems: We need more accuracy
o We can’t measure everything with just base units
o We need prefixes!
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Metric Units
The basic unit of length in the metric system in the meter and is represented by a lowercase m.
Metric Units
1 Kilometer (km) = 1000 meters
1 Meter = 100 Centimeters (cm)
1 Meter = 1000 Millimeters (mm)
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Metric Units
1 Kilometer (km) = 1000 meters
1 Meter = 100 Centimeters (cm)
1 Meter = 1000 Millimeters (mm)
Which is larger?
A. 1 meter or 105 centimeters
B. 4 kilometers or 4400 meters
C. 120 centimeters or 120 millimeters
D. 1200 millimeters or 1 meter
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Measuring Length
Ruler: http://www.k12math.com/math-concepts/measurement/ruler-cm.jpg
How many millimeters are in 1 centimeter?
What is the length of the line in centimeters? _______cm
What is the length of the line in millimeters? _______mm
What is the length of the line to the nearest centimeter?
________cm
HINT: Round to the nearest centimeter – no decimals.
1 centimeter = 10 millimeters
2.828
3
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Bell RingerSept. 25th
A. 1 meter or 150 centimeters
B. 5 kilometers or 4400 meters
C. 12 centimeters or 20 millimeters
D. 1200 millimeters or 2 meters
Grab your folder and get right to work!
Answer the following questions on your bell ringer sheet
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Metric SystemMeasurement What is it? Base unit How?
Length Distance between two points
Meter (m) Ruler ormeter stick
Mass Amount of matter in an object
Gram (g) Scale
Volume Amount of space in an object
Liter (L) Beaker orgraduated cylinder
Temperature Heat energy Degree Celsius(°C)
Thermometer
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Lesson 2: Temperature, Volume, and
MassT. Trimpe 2008 http://sciencespot.net/
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Measuring TemperatureMeasuring Temperature• Temperature is the
measure of the average heat energy
• Base unit= degree Celcius (°C)
• 0°C= freezing, 100°C boiling
• Use thermometers to measure.
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Find the temperature of each thermometer
A ECB D
19 °C 4 °C 5 °C 44 °C 22 °C
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Measuring Mass
• Mass is the amount of matter (stuff) in an object.
• Base unit = gram (g)• Use scales to measure.
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Metric Units Of Mass
1 Kilogram (km) = 1000 Grams (g)
1 Gram (g) = 1000 Milligrams (mg)
Which is larger?
A. 1 kilogram or 1500 grams
B. 1200 milligrams or 1 gram
C. 12 milligrams or 12 kilograms
D. 4 kilograms or 4500 grams
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Reading a Triple Beam Balance
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• Volume is the amount of space an object takes up.
• Base unit= Liter (L)• Use a beaker or
graduated cylinder to measure.
Measuring Volume
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Metric Units
1 liter (L) = 100 centiliters (cL)1 liter (L) = 1000 milliliters
(mL)1 kiloliter (kL) = 1000 liters (L)
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Measuring Volume
Top Image: http://www.tea.state.tx.us/student.assessment/resources/online/2006/grade8/science/images/20graphicaa.gifBottom Image: http://morrisonlabs.com/meniscus.htm
We will be using graduated cylinders to find the volume of liquids and other objects.
Read the measurement based on the bottom of the meniscus or curve. When using a real cylinder, make sure you are eye-level with the level of the water.
What is the volume of water in the cylinder? _____mL
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Measuring Liquid Volume
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19mL
29mL
64mL
68mL
A B C D
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