2017 2018学年高中英语Module5ALessoninaLabIntroductionamp;Listening课件外研版必修1.pdf

Introductionandwriting

dissolve

crucible

tongs

solid/liquid/gas

testtube

balance

Bunsenburner

Listening

Guess,listenandchecktheanswer.

1.(a)Waterexistsasasolid,aliquidand

agas.

(b)Waterexistsasasolidandaliquid

only.

2.(a)Whenyouheatametal,itexpands.

(b)Whenyouheatametal,itcontracts.

3.(a)Steelisamixtureofironandother

substances.

(b)Steelisamixtureofironand

oxygen.

4.(a)Two-thirdsoftheearth’ssurface

iswater.

(b)50%oftheearth’ssurfaceiswater.

5.(a)Thedistanceofthesunfromthe

earthis25,5000kilometres.

(b)Thedistanceofthesunfromthe

earthis150,500,500kilometers.

6.(a)Theearthis4.6millionyearsold.

(b)Theearthis4.6billionyearsold.

7.(a)Theearthistwiceaslargeasthe

moon.

(b)Theearthisforty-ninetimes

largerthanthemoon.

Putthesewordsinpairsorgroups.

aircontractearthgasliquidoxygenmoonsolid

sunexpand

1)air——gas——oxygen

2)contract—expand

3)earth——sun——moon

4)gas—liquid—solid

1.liquid:液体

2.expand:vi.使...膨胀

Metalsexpandwhentheyareheated.

3.contractvi.收缩

Metalscontractastheygetcooler.

4.substancen.物质

5.mixturen.混合物

6.oxygen氧气

7.electricityn.电

Answer

thequestions.

electricityironmetalsteelairglass

1.Whichoftheabovearenatural?

2.Electricity,iron,somemetalsandair

arenatural.

2.Whichareman-made?

Steel,somemetalsandglassareman-

made.

3.Whichcanbeboth?

Electricityandsomemetalsalloysfor

example)canbeman-madeandoccur

naturally.