课件34张PPT。课件课时设计Period 1: Introduction & Reading and
Vocabulary
Period 2: Vocabulary and Speaking &
Vocabulary
Period 3: Grammar 1 & Grammar 2
Period 4: Listening and Writing & Function
Period 5: Pronunciation & Everyday English &
Cultural Corner & TaskIntroductionDo you know them?famous scientistsDo you know them?famous scientistsFree talk : What do you know about the things shown below?Match the following words.1.physics
2.chemistry3.biologyAlfred Nobel
Darwin
Li ZhengdaoThomas Edison
Albert Einstein
Newton
Madam Curie
Listen and choose.1.(a) Water exists as a solid, a liquid and a gas.
(b) Water exists as a solid and a liquid only.
2.(a) When you heat a metal, it expands.
(b) When you heat a metal, it contracts.
3.(a) Steel is a mixture of iron and other substances.
(b) Steel is a mixture of iron and oxygen.
4.(a) Two-thirds of the earth’s surface is water.
(b) 50% of the earth’s surface is water.
5.(a) The distance of the sun from the earth is 25.500 kms.
(b) The distance of the sun from the earth is 150.500.500
kms.
6.(a) The earth is 4.6 million years old.
(b) The earth is 4.6 billion years old.
7.(a) The earth is twice as large as the moon.
(b) The earth is forty-nine times larger than the moon.Put the words in pairs or groups.contract air earth gas liquid oxygen
moon solid moon solid expand sunair – gas - oxygencontract - expandearth – sun - moongas – liquid - solidPut words in the right place.electricity iron metal
steel air glasselectricity iron air
some metalssteel glass some metalselectricity
some metals (alloy for example)Reading and VocabularyLook at the pictures. Do you know the names of the equipment？test tube tongs balancecrucible beaker & glass rod Bunsen burner Since you are interested in doing scientific experiments, now let’s get to know some vocabulary and knowledge related to science and experiment.Potassium
（钾）What can it be used for?How about the following metals?Sodium(钠) Calcium(钙)Magnesium(镁)Let’s get to know more!Let’s go on getting to know more metals.Aluniniu（铝） Zinc（锌）Iron（铁） Copper （铜）science
scientific
experiment
apparatus
test tube
tube holder
Bunsen burnerWhat words can you think of when looking at the pictures? Do you know how we can carry out an experiment successfully?It’s interesting to do an experiment. But we’ve got a lot of things to do before an experiment. First, we should be clear about the aim of the experiment, the apparatus we need and how we can carry it out (we call it “method”). We watch what’s happening and get the result. Lastly it is important to have a discussion on the result of the experiment. Don’t forget to write down the conclusion.DiscussionWhat is the correct order to describe a scientific experiment?aimmethodresultconclusionPassage ARead through passage A and study new words.electrical adj. 用电的，与电有关的
electricity n. 电
equipment n. 设备，装备
react vi. （化学）反应
reaction n. 反应
oxide n. 氧化物
steam n. 蒸汽， 水气Fast Reading The Different Uses of Metals
The Reaction of Metals
The Reaction of Metals with OxygenRead Passage A and choose the best title for it.Detailed ReadingWhat should we know when we use metals?
Which metal reacts most with water, potassium or iron?
It is important to know how they react with
different substances. Potassium reacts most with water.Read and answer.Work in groups of four. One is a reporter from a TV station. The others are scientists. The interview should include the following questions.Which metals reacts the most with oxygen and water?
What happens when you heat calcium in oxygen?
Which meals reacts with steam?
Does iron have a slow or fast reaction with steam?
Does copper react with water?
Potassium, calcium and sodium.It burns to form an oxide.Magnesium, aluminium and zinc.It has a slow reaction.No, it doesn’t.Passage B Can we put nails in wet air?Pre-reading:Put the words in the right place of the experiment report.conclusion method
result
aim apparatusAimApparatusMethodResultConclusionAn Experiment Report
1. __________:
2. __________:
3. __________:
(1)________
(2)________
(3)________
4. __________:
5. __________:Scanning Right or wrong.
FTFIron rusts easily in dry air.
To make sure there’s no air in the water, you have to boil the water for 3 minutes.
We don’t know whether iron rusts in ordinary water.To find out if ... iron nails test tubes oil tube holders
cotton wool Bunsen burnerAfter a week, rust( not ) rust inOne group reads one experiment report. Then fill in the form below.Complete the passage using what we’ve learnt in this lesson. In the first part of the experiment, the ____ is dry. It shows that iron ___________ in dry air.
In the second part, you must _____ the water to ______ _______ that there is no air in it. ________ some oil to the water can ______ the air out of it. It shows that _____ don’t rust in ____________ water.
In the third part, _______ the tube with water. It shows that they rust in _________ water.airdoesn’t rustboilmake sureAddingkeepnailsair-freehalf-fillordinaryComplete the passage with proper words.This is a _________ _________ done in a lab.
First, get all the ____________ ready on the desk, a container(容器) with some cold water in it, some potassium(钾) and a spoon.
Secondly, ________ some potassium into the water. Then a strong light will be seen, and it lasts for a while.
We can reach a __________ that potassium _______ with cold water.scientific experimentapparatusespourconclusionreactsComplete the sentences:
1.In the first part of the experiment, the _______ is dry, not wet.
2.It shows that iron____________ when the air is dry.airdoes not rust3.In the second part of the experiment, you must _______ the water to make sure there is no ________ in it.
4.You add ________ to the water because this keeps _________out of it.boilairoilair5.It shows that __________ does not rust in water that has no _______in itnailairRead the passage and complete the table.cotton
woolnailsIron does
not rust.waterIron does
not rust.waterwaterIron rusts.
