Measurements basics
The SI unit of length.
Metre m
100 centimetres is equal to this many metres
1 metre
The SI unit for time
Seconds s
The formula for calculating speed
speed = distance รท time
The tool used to measure the length of a classroom
Meter stick
1 kilometre equals this many metres
1000 metres
The instrument used to measure short time intervals in experiments
Stopwatch
The unit for speed
meters per second (m/s)
The correct unit to measure the thickness of a coin
Millimetre mm
Convert 250 cm into metres
2.5 m
The formula triangle for speed shows that time equals this divided by speed.
Distance
A car travels 100 m in 20 s. Calculate its speed
5m/s
The term used to describe how close a measurement is to the true value
Accuracy
Convert 5 km into metres
5000 m
If a journey takes 2 hours, this is how many minutes.
120 mins
If you know speed and time, you multiply them to find this
Distance
How do you measure cylinder objects?
Vernier Callipers
Convert 90 minutes into hours
1.5 hours
The term for improving reliability
Repeating
A cyclist travels at 10 m/s for 30 seconds. Calculate the distance travelled
3000 m