Mastering the Metric System The metric systems is
- Slides: 19
Mastering the Metric System
The metric systems is what scientists use to make Quantitative Observations • Length • Volume • Mass = Weight for this unit • Temperature
Metric Measurements • Your object or distance is compared to a standard and you record its relationship to a standard. • The standard is the BASE UNIT. • Ex: the meter is the base unit for length • Prefixes show multiples of the base unit. 1 kilometer 1000 meter 100 centimeter 10 millimeter
Metric Measures of Length is the distance along a straight or curved line.
Three essential metric relationships. You must memorize these 1 kilometer 1000 meter 100 centimeter 10 millimeter
Abbreviations • Kilometers = km • Meters = m • Centimeters = cm • Millimeters = mm
Tools for measuring length • Meter stick • Metric ruler • Meter tapes • Caliper
Measure to the nearest line. Use the decimal system to show the parts of a unit.
METRIC VOLUME
Volume • The amount of space an object, liquid or gas takes up.
100 m. L graduated cylinder Graduated Cylinders are used for Measuring Volume
Water Sticks to the Side of Containers • Results in a meniscus • Read the bottom of the meniscus at eye level
Metric Rulers can be used to measure the volume of rectangular solids length width depth Volume = Length x width x depth Units are cm 3 or mm 3
Memorize 3 cm 1 1 milliliter 1 liter (L) 1000 milliliters (m. L)
MASS AND WEIGHT
Mass = Weight for this Lab • Mass = the amount of matter in a gas, solid or liquid • It is a measure of the number and size of the molecules in the chunk of stuff you are measuring.
Grams are base Units for Mass Memorize 1 kilogram (kg) 1000 grams (g) 1 gram (g) 1000 milligrams (mg)
Tools for Measuring Mass • Balances measure mass by comparing the mass of your object to a standard mass • Triple Beam Balance • Scales measure weight by measuring the pull of gravity on your object. • Spring scales. • Bathroom scales.
Memorize the Essential Metric Relationships 1 km 1000 m 1 m 100 cm 1 kg 1000 g 1 g 1000 mg 1 L 1000 ml 1 cm 3 1 cm 10 mm