using scientific measurement. common core/next generation science standards addressed hsn-q.a.1...
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Using Scientific MeasurementUsing Scientific Measurement
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Common Core/Next Generation Common Core/Next Generation Science Standards AddressedScience Standards Addressed
HSN-Q.A.1 -Use units as a way to understand problems and HSN-Q.A.1 -Use units as a way to understand problems and to guide the solution of multi-step problems; choose and to guide the solution of multi-step problems; choose and interpret units consistently in formulas; choose and interpret units consistently in formulas; choose and interpret the scale and the origin in graphs and data interpret the scale and the origin in graphs and data displays. (HS-PS2-1),(HS-PS2-2),(HS-PS2-4),(HS-PS2-5)displays. (HS-PS2-1),(HS-PS2-2),(HS-PS2-4),(HS-PS2-5)
HSN-Q.A.2 - Define appropriate quantities for the purpose HSN-Q.A.2 - Define appropriate quantities for the purpose of descriptive modeling. (HS-PS2-1),(HS-PS2-2),(HS-PS2-4) of descriptive modeling. (HS-PS2-1),(HS-PS2-2),(HS-PS2-4)
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Bell WorkBell Work
Why is measurement important?Why is measurement important? Name as many measurement tools Name as many measurement tools
as you canas you can What types of measurement are What types of measurement are
there?there?
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Using Scientific Measurement
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Terms.
Area Calipers Celsius scale Fahrenheit scale Gram Gravity Inside calipers Linear measurement
Measuring sticks Meter stick Outside calipers Scale Tape measures Temperature Volume Weight
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How is the metric system set up?
I. The metric system is used by all scientists around the world. • official name is International System of
Units know as SI because of its French origin. increasingly used in USA. 1975, Congress passed a law calling for the
US to change to the metric system. change has been slow in agriculture.
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A. The metric system is easy to use.
Based on a decimal system that increases or decreases numbers by 10s.
Similar to money system used in USA and Canada.
Uses prefixes to decrease or increase numbers.• Prefix is added before the unit or measure
being used. • Common measurements are grams, meters,
liters, and seconds.
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PREFIXES USED IN THEMETRIC SYSTEM
Prefix Symbol Factor by which multiplied!
Giga G 1,000,000,000.0 (one billion)Mega M 1,000,000.0 (one million)Kilo k 1,000.0 (one thousand)Hecto h 100.0 (one hundred)Deka da 10.0 (ten)Deci d 0.1 (one tenth)Centi c 0.01 (one-hundredth)Milli m 0.001 (one-thousandth)Micro µ 0.000001 (one-millionth)Nana u 0.000000001 (one-billionth)
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How is temperature measured?
Temperature is the degree to which something is hot or cold. It is measured with a thermometer
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A. Two temperature scales are commonly used: Fahrenheit scale (F) and Celsius
scale ( C).
Fahrenheit scale -water boils at 212°F and freezes at 32°F.
Celsius is the metric system of temperature measurement.
Celsius scale - water boils at 100°C and freezes at 0°C.
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How is linear distance measured?
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III. Linear measurement is the distance between two points.
Length measurements are often needed to determine other measures of an object, such as area and volume.
Most common unit of linear measurement is meter.
Several different instruments can be used in determining linear measurement.
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A. Measuring sticks Graduated measuring sticks are
typically made of wood, plastic, ormetal.
Often the length of one unit and marked in smaller units.
An example: A meterstick is one meter long
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B. Tapes—
Tape measures are flexible linear measuring devices made of metal or fabric.
They may be enclosed in cases that the tape rolls into when not in use.
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C. Calipers—.
Calipers are used for determining the thickness, diameter, or distance betweenthings. • Jaws or legs are moved to determine that
measurement.
• Calipers can be adjusted to make very fine and accuratemeasurements.
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Calipers are classified as inside or outside.
Inside calipers Measure the inside distance of tools or equipment.
Outside calipers Measure the outside diameter of objects
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COMMON LINEAR MEASUREMENTS Customary System:
1 foot (ft.) = 12 inches (in.)1 yard (yd.) = 3 feet or 36 inches1 mile (mi.) = 8 furlongs or 1,760 yards or 5,280 feet
Metric System:(Note: The meter is the basic unit of length. Measuring 39.37 inches long, the meter is slightly longer than a yard.)1 millimeter (mm) = 0.001 meter1 centimeter (cm) = 0.01 meter1 kilometer (km) = 1,000 meters
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LINEAR MEASUREMENTEQUIVALENTS AND CONVERSIONS
EquivalentsCustomary: Metric:1 inch = 2.54 centimeters1 foot = 30.48 centimeters1 yard = 0.9144 meter1 mile = 1.609 kilometers or 1,609 meters
Converting Customary to MetricIf you know the length in: Multiply by: To find:Inches 2.54 centimetersFeet 30 centimetersYards 0.9 metersMiles 1.6 kilometers
Converting Metric to CustomaryIf you know the length in: Multiply by: To find:Centimeters 0.4 inchesMeters 1.1 yardsKilometers 0.6 miles
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How is area measured?
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IV. Area is the measurement of surfaces.
Linear measurements must be made in order to determine area.
It is reported in square units, such as square meters.
Area is based on the length of the sides of an object. • Area is the amount of space within linear
measurements. • Units used to measure a surface must be the
same in order to determine the area.
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A. The shape of the surface being measured determines how the area is calculated. • The following is a list of some common shapes
and the formula used to calculate their area.
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1. Square: Area = length × width
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2. Rectangle: Area = length × width
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3. Triangle: Area = (base × altitude)/2
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4. Trapezoid: Area = [(base + base)/2] × altitude
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5. Circle: Area = (radius2 × 3.14)/2
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How is volume measured?
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V. Volume is the total size of an object..
Volume is the amount of space something takes or holds.
Reported in cubic units, such as cubic meters or cubic centimeters.
Volume is measured as area times depth
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1. Square or rectangular containers: Volume = length × width × height
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2. Cone: Volume = (radius2 × 3.14 × height)/3
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3. Cylinder: Volume = radius2 × 3.14 × height
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How is weight measured?
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VI. Weight is the heaviness of something.
It is related to gravity which is the pull of the earth.
Weight is often measured using a scale, which is a machine for weighing.
• A. Most common measurement for weight is grams or kilograms.A gram is the mass or weight of 1 cubic centimeter of water, which is also the same as 1milliliter of water.
• This is often expressed as: 1 g = 1 cm3 = 1 mL
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The End!The End!