1. Objective: Can you solve problems involving density, mass and volume? (Grade C) Effective Participator Self Manager Independent Enquirer Creative Thinker Team Worker Reflective Learner Compound Measures 5 18 th September 2013 Density Mass Volume Keywords Starter – The distance between Sheffield and Land’s End is 420 miles. a) What is the average speed of a journey from Sheffield to Land’s End that takes 8 hours 45 minutes? b) If Sam covered the distance at an average speed of 63 mph, how long would it take him? 45 mph 6 hours 40 minutes

2. Which is heavier a tonne of bricks or a tonne of feathers?

3. Keywords VolumeMass Density

4. What is Density?

5. Formula Triangle M DV

6. Examples 1) A piece of metal weighs 40g has a volume of 4cm 3. What is it’s density? 2) What is the volume of a piece of rock that has a mass of 72kg and a density of 9kg/m 3 ? 10 g/cm 3 8m 3

7. How to answer questions... 1.Decide what 2 pieces of information you have been given: e.g. density and volume. 2.Then choose which formula you have to use. 3.Then use the formula to get your answer. 1) A slab of concrete has a volume of 60cm 3 and a mass of 150g. Work out the density of the concrete? 2) Gold has a density of 19.3g/cm 3. The gold ring has a mass of 15g. Work out the volume of the gold in the ring? 3) 14.7g of sulphur has a volume of 7.5cm 3. Work out the density of sulphur? 2.5 g/cm 3 0.777 cm 3 1.96 g/cm 3

8. Questions Green The density of steel is 7700kg/m 3. a)A steel bar has a volume of 2.5m 3. Work out the mass? b)A block of steel has a mass of 1540kg. Work out the volume? Red The density of aluminium is 2590kg/m 3. The density of lead is 11400kg/m 3. A block of aluminium has a volume of 0.5m 3. A block of lead has a volume of 0.1m 3. Which of the two blocks has the greater mass and by how many kilograms?

9. Answers Green Mass = 19 250kg Volume = 0.2m 3 Red The aluminium block by 155kg.

10. In your own words... Explain something you have learned today