Scientists at Scientists at workwork

Unit 16Unit 16

1 He has very ________eyes; he catches sight of things quickly.2 The car wouldn’t go because the __________had gone wrong.3 Whether right or wrong, he has ideas about how the lessons should be _______________.4 There are several other kinds of __________in the air besides oxygen.5 The US and UK are __________by a common language and mutual interests.6 Why did you___________the cloth when I’d advised you to cut it with scissors?7 A live wire is one that is ____________with electricity.8 The worker got _________when he touched the wire.9 The rocket appeared about twelve to fifteen ________ in diameter.10 The tea received a great________of praise from Tom.

sharp

engine

conducted gases

tied

tear

charged shocked feet feet

deal

Fill in the blanks with the words learnt in this unit.

A B

table week door pea day sun house shoehead night pocket arm steam lazy break window photo son draw man light

cloth bones end bell rising maker keeper ache club knife way chair shopping servant dreaming boat nut down break copying law

tablecloth , weekend , doorbell , peanut , daybreak, sunrise,house-keeper, shoe-maker, headache, nightclub , pocket- knife, arm-chair , highway , steamboat, lazy- bones, breakdown, window-shopping, day- dreaming, photocopying, son-in-law

Word formation:

in a chemistry lab

doing an experiment

an English-Chinese dictionary, an English book and a notebook

in a physics labdoing an experiment

in a biology lab

looking at something through a microscope

chemistry

science of elements and their laws of combination and change

element

substance

gas, liquid, solid

chemical change

chemistry experiments

language

the system of sounds and words used by humans to express their thoughts and feelings

sounds, words, phrases, sentences

grammar

communicate communication

native/mother language

foreign language

physics

science of matter and energy and of interactions between the two

matter

power

energy

physical change

physics experiment

biology

science of life and of living organisms animal plant living things gene cell protein biology experiment

1. Safety comes first2. Follow the teacher’s instructions3. Bottles may contain dangerous gases.4. Immediately wash your eyes with a lot of water.5. Clear everything away and leave the classroom neat and clean, wash your hands, turn off the lights and shut the windows.

( P22 )

Listening on page 891 It is the oldest public museum . it has a library where many great writers and scientists wrote their books.2 A museum about nature and environment.3 The first areoplanes and the American Space capsule that made the first flight around the moon.

Useful expressions on P 23

be to do sth: should /must do, plan to do a maglev train in one’s opinion (a) waste of money much too / too much in the future mean to do sth./ mean doing sth. make (good/full) use of

The money would be better spent building more roads or railways in other parts of China.

Cloning1.can help some women have babies2.can help medical research1.it is not natural to make people2.dangerous, people use it to do strange thingsNuclear energy1.can make all the electricity we need2.is a limitless resource1.unsafe to all life if not controlled2.can be expensive to build/repair

Speaking on P23

Computers1.makes communication faster2.can keep information better1.unsafe because of viruses2.makes more problems than it solves

Space flights1.makes research of outer space possible2.put communication satellites in space1.expensive and dangerous 2.used by the army

Benjamin Franklin(1706~1790)

an American printer, author, diplomat, philosopher, and scientist

Aim :

Materials:

Instructions:

Description:

Result:

FRANKLIN’S FAMOUS KITE EXPERIMENT

Aim :

Materials:

Instructions:Description:Result:

To show that lighting and electric are the same.

some wooden sticks, a piece of silk, some rope, a sharp piece of metal, silk ribbon, a key, a condenser, a small shed , a thunderstorm with lightning

Paragraphs 5 & 6

Paragraph 3The electricity can be collected and

stored in the condenser; can be used to do other experiments;proves that lightning and electricityare the same.

How to make a kite1. Build the frame of the kite by making a

small cross of two pieces of light wood.2. Tie the corners of the handkerchief to

the points of the cross.3. Add a tail to the frame and tie a long

string to the cross. What to do then Fix a very sharp piece of metal, pointing

a foot or more above the frame, to the top of the longer stick of the cross.

Fasten a key to the end of the long string. Tie a silk ribbon to the string, just above

the key.

Tie to

Add to

Fixto

Fasten to

Useful phrases in the text

a number of experiments do an experiment fly high in the rainy sky get /become charged a great deal of be made of / from fix / fasten / tie… to protect …from take care that…

Explanation of some sentences

1. Benjamin Franklin conducted a number of experiments in ______ he showed

______ electricity is .

2. Here is _____ he described one of his

experiments.

3. Having realized ______ I could use a kite

to attract lightening, I decided to do an

experiment.

(

)

When I had realized that I could use a kite ….

[]

which

what

how

that

______ the first thunderstorm came, I took

my condenser to a shed in the field ______ I

could do my experiment.

I was beginning to think ______ the

experiment would not work.

Others followed even before the whole string

was wet, and I was able to collect and store a

great deal of electricity in the condenser.

The experiment proves that lightening and electricity are the same.

When

where

that

and

[ ](

)

[]

Fly the kite ______ a thunderstorm appears

to be coming on.

Take care ______ the string does not touch

the wall or the door.

when[]

that