1. MEASUREMENT IN SCIENCE

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

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

4. 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)

5. 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)

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

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

8. To find the volume of an IRREGULAR object:
Displacement Method

9. Archimedes

10. To find the volume of a LIQUID:
Meniscus
Graduated Cylinder

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

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

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

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

15. 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)