MEASUREMENT IN SCIENCE

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Making Measurements in Science

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Presentation transcript:

MEASUREMENT IN SCIENCE

Scientific investigations involve making measurements. A measurement includes both a number and a unit of measure.

Le Système International d'Unités (SI) standard system of units modern version of the metric system

MASS The amount of matter (or ‘stuff’) in an object The same, no matter where the object is located in the universe Gram (g) Kilogram (kg)

WEIGHT Measure of the gravitational force on an object Varies with location On the moon, your weight is 1/6th of your weight on Earth SI unit of weight = N (Newton)

VOLUME The amount of space an object takes up Cubic meter (m3) Milliliter (mL) Liter (L)

To find the volume of a REGULAR object: Length x Width x Height

To find the volume of an IRREGULAR object: Displacement Method

Archimedes

To find the volume of a LIQUID: Meniscus Graduated Cylinder

TIME The interval between two events Second (s) Hour (h)

TEMPERATURE Measure of the average kinetic energy of the particles that make up a material. Kelvin (K) Celsius (°C)

LENGTH Measurement of distance between ends Millimeter (mm) Centimeter (cm) Meter (m) Kilometer (km)

AREA The amount of surface within a set of boundaries Expressed in square units (length x width) Square meter (m2) Square centimeter (cm2)

DENSITY Measure of the amount of matter that occupies a given space. Calculated by dividing mass by volume D=M÷V Grams per cubic centimeter (g/cm3) Grams per milliliter (g/mL)