Study Notes
Measurements in geometry involve understanding units of length, mass, and capacity, as well as time. These units help quantify and compare different physical quantities.
- Metre (m) — standard unit of length in the metric system.
Example: The distance between two cities is measured in kilometres, where 1 km = 1000 m. - Gram (g) — standard unit of mass in the metric system.
Example: A bag of sugar might weigh 1 kg, which is 1000 g. - Litre (L) — standard unit of capacity in the metric system.
Example: A bottle of water might have a capacity of 1 L. - Second (s) — unit for measuring time.
Example: The second hand on a clock measures time in seconds.
Exam Tips
Key Definitions to Remember
- 1 km = 1000 m
- 1 kg = 1000 g
- 1 kL = 1000 L
- 1 hour = 60 minutes
Common Confusions
- Confusing the conversion factors between units, such as cm to m or g to kg.
- Mixing up the 12-hour and 24-hour time formats.
Typical Exam Questions
- How many metres are in 3 km? 3000 m
- Convert 5000 g to kg. 5 kg
- What is 7:30 p.m. in 24-hour format? 19:30 hours
What Examiners Usually Test
- Ability to convert between different units of measurement.
- Understanding of time formats and conversions.
- Application of measurement units in real-world contexts.