1. How well do you know your units?
Give the units for the following (name or symbol)
Distance
Mass
Temperature
Energy
Potential difference
Relative atomic mass
Density
Deceleration

2. Answers Distance metres/m Mass kilogrammes/kg or grams/g
Temperature degrees celcius/oC (accept Kelvin K)
Energy joules /J
Potential difference volts/V
Relative atomic mass no units – it’s a comparison against Carbon-12
Density kilograms per metre cubed/ kg/m3
Deceleration metres per second squared m/s2 (will be negative)

3. Converting between units
Express the following lengths in metres:
250cm
10 cm
100mm
6 x 106 cm
7.5 x 104 mm

4. Converting between units
Express the following lengths in metres:
250cm
10 cm
100mm
6 x 106 cm
7.5 x 103 mm
2.5m
0.1m
6 x 104m (accept 60000)
7.5m

5. Now convert these 275mls to l 330cm3 to dm3 0.5l to mls 0.66dm3 to cm3
0.4l to cm3
575mls to cm3
0.125dm3 to cm3
0.03l to mls

6. Answers 275mls to l 330cm3 to dm3 0.5l to mls 0.66dm3 to cm3
0.4l to cm3
575mls to cm3
0.125dm3 to cm3
0.03l to mls
0.275l
0.330dm3
500mls
660cm3
400cm3
575cm3
125cm3
30mls