Study Notes
Units of measurement are standardized quantities used to express physical quantities. They include units for length, mass, capacity, time, temperature, and speed.
- Length — the measurement of distance. Example: 1 kilometer (km) = 1000 meters (m)
- Mass — the amount of matter in an object. Example: 1 kilogram (kg) = 1000 grams (g)
- Capacity — the amount a container can hold. Example: 1 liter (L) = 1000 milliliters (mL)
- Time — the ongoing sequence of events taking place. Example: 1 hour = 60 minutes
- Temperature — the degree of hotness or coldness. Example: Measured in degrees Celsius (°C) or Fahrenheit (°F)
- Speed — the rate at which an object covers distance. Example: Measured in meters per second (m/s)
- SI Prefixes — used to denote multiples or fractions of units. Example: Kilo (K) means 1000 times the unit, Milli (m) means 0.001 times the unit
Exam Tips
Key Definitions to Remember
- Length is measured in meters, kilometers, centimeters, etc.
- Mass is measured in kilograms, grams, etc.
- Capacity is measured in liters, milliliters, etc.
- Time is measured in hours, minutes, seconds.
- Temperature is measured in degrees Celsius or Fahrenheit.
- Speed is measured in meters per second.
Common Confusions
- Confusing metric prefixes like kilo and milli.
- Mixing up units for mass and weight.
Typical Exam Questions
- How many centimeters are in 1 meter? 100 centimeters
- Convert 51 meters to centimeters. 5100 centimeters
- How many meters are in 12530 millimeters? 12.53 meters
What Examiners Usually Test
- Ability to convert between different units of measurement.
- Understanding of metric prefixes and their meanings.
- Application of unit conversions in real-world contexts.