1. International System (SI)
Measuring system used in science
AKA: metric system
Length
Distance between two points
Base unit
meter (m)
Instrument
meter stick or metric ruler
Episode 102

2. Amount of matter in a substance
Mass
Amount of matter in a substance
Base Unit
Gram (g)
Instrument
Balance
Weight is mass plus the force of gravity.
Episode 102

3. Amount of space an object occupies
Volume
Amount of space an object occupies
Base Unit
Liter (L)
Instrument
metric ruler or graduated cylinder
Episode 102

4. Interval between two occurrences
Time
Interval between two occurrences
Base unit
Second (s)
Instrument
Stopwatch
Temperature
Average kinetic energy
Celsius (°C) or Kelvin (K)
thermometer
Episode 102

5. Measure the width of your textbook
A measurement includes both a number and a unit
Significant Figures
Measured numbers plus one estimated number
Episode 102

6. Examples of volume measurements
Volume of liquid = _______
Volume of solid
Rectangular solid
V = L x W x H
Volume of cube = _______
Volume of rectangular solid = _______
Irregular solid (rock)
Water displacement
3 cm
5 cm
1 cm
3 cm
Episode 102

7. Practice problems What is the volume of the rock?
What is the volume of the rectangular solid?
What would the volume of the rectangular solid be using water displacement?
8 cm3 = 8 mL
1 cm3 = 1 mL
4 cm
1 cm
2 cm
Episode 102