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THE METRIC SYSTEM

The Metric System is an internationally recognized system of measurement designed to provide a consistent "language" for quantifying various attributes, such as length, mass, volume, time, and temperature. Its base-10 structure allows for easy conversions by moving the decimal point. Key units include meters for length, grams for mass, liters for volume, seconds for time, and Celsius for temperature. This guide outlines measurement techniques, equipment required, and conversion tips, making it essential for anyone seeking to understand or utilize the metric system effectively.

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THE METRIC SYSTEM

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  1. THE METRIC SYSTEM A Global System of Measurement

  2. Introduction • Definition- A system of measurement units used all over the world. • Same “Language” • Measure anything • Base 10 system • Base units • Move decimal left or right to convert between units. • Prefixes change the units by a factor of 10.

  3. Length • DEFINITION: measurement of distance from one point to another • Unit- Meter (m) • Equipment- meter stick and metric ruler

  4. Length Tips • Make sure you start at the 0 mark, NOT at the end of the metric ruler or meter stick. • Read the meter stick by counting the large, numbered tick marks as centimeters and by reading the small, unnumbered marks as millimeters.

  5. LengthEquivalents

  6. LengthEstimates Pinkie Step

  7. Mass/Weight • DEFINITION: • Mass- a measurement of the amount ofmatter that makes up and object • Weight- a measurement of the effect ofgravity on an object • Unit- gram (g) • Equipment- triple beam balance, spring scale

  8. Mass/WeightMeasurements

  9. Mass/WeightMeasurements • Direct measurement- for solid objects: • Indirect Measurement- for liquid objects: • Tips- • Make sure your balance is zeroed out before beginning to measure by turning the knob. • Get down at eye level to read the balance.

  10. Mass/WeightEquivalents

  11. Mass/WeightEstimates Pineapple Dollar Bill

  12. Volume • DEFINITION: the amount of space an object takes up • Unit- liter (L), cubic centimeter (***1 mL = 1 cm3***) • Equipment- graduated cylinder, beaker, micropipettes • Measurements • Direct: When measuring Volume of a liquid. • Place the liquid into the graduated cylinder. • Tips: • Get down at eye level to read the graduated cylinder • Read the cylinder at the bottom of the meniscus.

  13. VolumeMeasurements The volume of this liquid is 66mL

  14. Water Displacement • Water Displacement-When measuring the volume of a solidobject: • Get a beaker with water that the object can be fully submerged in. • Record the water level in the beaker before the object is in the water. • Then, place the object in the water. • Record the new height of the water in the beaker • Take the new height of water and subtract the original height of the water from it • The answer is the volume of the object

  15. VolumeEquivalents

  16. VolumeEstimates Coke Mentos

  17. Time • DEFINITION: a measure of change • Unit: second (s) • Equipment: stopwatch, clock • Equivalents:

  18. Temperature • DEFINITION: A measure of the average amount ofheat contained in an object • Unit: Celsius (C) • Equipment: thermometer • Standard Equivalents:

  19. TemperatureEstimates • Room Temperature= 68F = 20C • Water Freezes At: 32F = 0C • Water Boils At: 212F = 100C

  20. Density • DEFINITION: the amount of matter in a given amount of space. • Unit: Grams per milliliter (g/mL) and Grams per Centimeter cubed (g/cm3) • Equipment: No direct measurement can be measured, must be calculated.

  21. DensityEstimates Brick Pillow

  22. Speed DEFINITION: the change in position over time. • Unit: meters per second (m/s), kilometers per hour (km/hr) • Estimate: 1.3 m/s= normal walking pace; 62 mi/hr= 100 km/her • Equipment: No direct measurement can be measured, must be calculated. • Equivalents

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