Revision as of 08:31, 4 September 2009

Outcomes

Specification References

• 5.2 recall and use the relationship between density, mass and volume: density = mass/ volume
• 5.3 describe how to determine density using direct measurements of mass and volume

Starter

Main Body of Lesson

• Density of Regular shapes - blocks and maybe a cylinder to challenge the more able. They can use the digital micrometer for one and a more sensitive balance. This will revise significant figures in measurements and in calculations.
• They can use their values to identify the material.
• You could also recap on prefixes - milli, centi, kilo along with conversions (1 ml = 1 cm3, m3 <--> cm3, g <--> kg) Conversion Questions for Density
• Density of Irregular shapes using Eureka Can and Displacement Method.
• Density of Water using a measuring cylinder. It is important for pupils to know the density of water is 1g/cm3 or 1000kg/m3.

Plenary

• Here is the old Buried Treasure activity from Vince Robinson.

Homework

• Read pages 16-21
• Q's 1-9 pg. 17
• Q's 1 and 2 pg. 19
• Extension Q's 1 and 2 pg. 20

Additional Information

Resources Required

• Density of Regular Shapes - cubes, blocks, cylinders, digital micrometers, balance, sensitive balance, rulers, copies of density table.
• Density of Irregular shapes - irregular shaped objects, eureka cans, balance
• Density of Water- measuring cylinders - range of sizes, balance
• Buried Treasure Activity - seven different sized platicine 'blobs' with a treasure (polystyrene ball painted gold?)hidden in one of them.

Textbook References

• None

Website References

• None

Skills Addressed

• Obtaining

Safety/Hazards

• General Laboratory Health and Safety Risk Assessment

Notes

• None