GCSE Units Dr J Frost jfrosttiffin kingston sch

GCSE: Units Dr J Frost (jfrost@tiffin. kingston. sch. uk) GCSE Revision Pack Ref: 157, 158, 160 Last modified: 6 th April 2015

GCSE Specification (Using revision pack reference numbers) 157. Convert between units of measure in the same system. (NB: Conversion between imperial units will be given, metric equivalents should be known. ) 158. Know rough metric equivalents of pounds, feet, miles, pints and gallons: Metric/Imperial Convert between imperial and metric measures 160. Convert between metric units of speed eg km/h to m/s

Imperial & Metric Pints Metres kg Miles Length Mass Feet Inches Tonnes Miles Stone Metric Capacity Litres Imperial Gallons Pounds

You need to memorise these for your GCSE exam! ? ? ? Test Your Understanding ? 5. 4 kg = 11. 88 pounds 49. 69 pints = 28. 394 litres ? 40 km = 25 miles ? 75 cm = 2. 5 foot ? ? 30 miles = 48 km 28 km = 17. 5 miles ? 480 miles = 768 km ?

Memorise Time! ? ? ? ? ? ?

Converting between compound units 30 m/s 65 m/s ? 1000 ? 0. 03 km/s × 3600 ? ? 108 km/h ? 234 km/h

Test Your Understanding 175 m/s 45 km/h ? 630 km/h ? 12. 5 m/s

Exercises 1 4 ? [Edexcel] Emily is driving in France. She sees this sign. Emily is going to drive to Dijon. She plans to drive at an average speed of 50 miles per hour. Work out how long it should take Emily to drive to Dijon. ? 2 6 hours ? ? ? 5 3 ? 6 The average human consumes about 7. 6 pints ? 4 To experiment to see if cats land on their feet, I release Pippin upside down at the top of a 6000 foot drop. What is that in km? 1. 8 km of cow’s milk a day. How many litres is that in a year? 1585. 1 litres ? ? ? If my Ferrari consumes 6 gallons of petrol each hour and my Aston 8 gallons each hour, what is the difference in time in seconds, between the two cars, to consume a litre of petrol? 33. 3 seconds ?