Week 2 w/b 05/05 Week 3 w/b 12/05 Week 4 w/b 19/05 Week 5 w/b 26/05Curriculum learning objectives:

PRESSUREhow the effect of a force depends on the area to which it is appliedhow to use the quantitative relationship between force, area and pressureabout practical applications of this relationshipto present and listen to arguments based on scientific understanding

PNEUMATICS AND HYDRAULICSthat gases can be put under external pressure, and some uses of thisto explain the transmission of pressure in terms of the particle modelthat liquids can be put under external pressure, and some uses of thisthat gases and liquids have internal pressure which depends on the weight of fluid above the point being considered

REVIEWto use ideas about force and pressure to interpret secondary sources

LEVERSthat a lever is a simple machine which uses a pivotabout uses of leversthat the turning effect of a lever depends on the force and its distance from the pivotabout examples of levers in the bodyhow pairs of antagonistic muscles produce turning effects at skeleton joints

BALANCEthat a force can make an object topple over (turn about a pivot)that the turning effect of a force is called its momentto plan and carry out an investigation

MOMENTSto devise a table to show results effectively and draw conclusionsto identify and explain anomalous resultsto use the principle of moments to explain balanceto calculate moments about a single pivot

ASSESSMENTto use the ideas of this unit

Student learning outcomes:

PRESSUREexplain the relationship between force and area, eg in terms of lying on a bed of nailsapply the quantitative relation between pressure, force and area to a number of situations, eg skis, sharp bladesshow, by the ability to apply ‘reverse logic’, that they have grasped the key ideas of pressure

PNEUMATICS AND HYDRAULICSdescribe some effects and uses of gases under pressure, eg car tyres, aerosols, pneumatic systemsapply the model of the particle theory of matter to explain the behaviour of gases under pressureapply the particle model of matter to explain why liquids are incompressible and gases are compressibleapply the concept of transmission of pressure to predict the resulting forcedescribe some effects and uses of liquids under pressure, eg fire hoses, hydraulic systemsdescribe an effect of atmospheric pressure or underwater pressure

REVIEWshow by the links they make that they have grasped the key ideas

LEVERSdescribe how to make a task easier by increasing the distance between the effort and the pivotidentify levers in a number of household devicesdescribe the arrangement of muscles on the arm and associate them with the parts of a leverexplain how an antagonistic muscle pair works

BALANCEdescribe how an object can be kept in balance, eg human body, craneapply the idea of the turning effect of a force to everyday situations, eg lifting heavy objects plan to take appropriate measurements

MOMENTSpresent results in a way which helps them identify patterns explain, in terms of experimental technique, how anomalous results might have occurredrecall the principle of moments and apply it to a range of situations

ASSESSMENTshow, by their answers, that they have grasped the key ideas

Discovery Bay International SchoolUnit Plan

Unit Title: PRESSURE AND MOMENTS

Year 9Term 3.1

Teachers: Mikaela Parker