02/05/2010 (Day 1)

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02/05/2010 (Day 1)

DictationCheck-point 6(P.151)

Revision: Troubles caused by thermal expansion and

contraction(P.152)

Application of thermal expansion and

contraction(P.152)Bimetallic strip

Brass & Iron

Experiment 6.16(P.153)FIRE ALARM

Experiment 6.16(P.153)FIRE ALARM

1. Iron should be placed close to the nail.

Experiment 6.16(P.153)FIRE ALARM

The bimetallic strip bends.

2.(a)2.(b)

The bell rings when the bimetallic strip bends and touches the iron nail.

CASE 1Bimetallic strip

After Heating

Heating

CASE 2Bimetallic strip

After Heating

Heating

QUESTIONBimetallic strip

After HeatingHeating

CASE 3Bimetallic strip

After Heating

Heating

CASE 4Bimetallic strip

After Heating

Heating

HOMEWORKWORKBOOK

Part 6.6 P.48~49Part A and B

Due date: 4-5-2010

Application of thermal expansion and

contraction(P.153)Thermostat