unit 16 scientists at work period1 warming up & listening academician president of zhejiang...
TRANSCRIPT
Unit 16 Scientists at work
Period1 Warming up & listening
academician
President of Zhejiang University
"Father of China's Aerospace"
Director of the Guangzhou Institute ofRespiratory Diseases
Working in a lab.Doing experiment
Scientist is a person who has expert knowledge of one or more sciences .
(especially gained through experience).
What are the subjects in which you learn science? What can you learn in your science classes?
Science
physics
chemistry
biology
Warming-up
If you want to learn the science subjects well, what should you also do besides the class learning?
Through a microscope
We can learn the subjects well by ________.
Game: What equipment will you choose if you are asked to do experiment in a lab.
chemistry
physics
biologyPH indicator flask
test tub
litmus paper
reagent
stirring robfilter
magnet engine
condenser
electric wire
voltmeter
amperemeter
sample
burette
dissector
microscope
nipper
pieces of glass
Do you still remember what your teacher often remind you before, when and after you do an experiment?
Listen to what Mrs. Zhu is talking to his students for the first time, focusing on the subjects mentioned in the passage.
Flames
Safety in the lab
ExperimentsLong hair
Gases
1. ______comes first!
2. ______the teacher’s____________.
Don’t come in __________________.
Students with long hair should _____it ___.Always _______________ your teacher’s instructions and don’t _____ anything _____ your teacher tells you to.
Listen to the tape for the second time to write down some key words .
Before the experiment:
Safety
Follow instruction
without your teacher
tie
up listen carefully to
touch
unless
During the experiment
1. can be very dangerous. You should and carefully it. Never anythin
g.1. Be careful about the .2. When working with ,make sure your
hands are .3. When anything gets into your mouth or eyes,
immediately your eyes .
4. Don’t things or start playing .
Gases
wave smell taste
flameelectricity
dry
washwith a lot of water throw
After the experiment
everything and the classroom and clean.
your hands with water and .
the lights and the windows.
Clear away leave
neat
Wash soap
Turn off shut
DOS DON’TS
Follow / teacher’s /instructions Don’t come into / without …
Be careful about / when… Don’t touch… / unless…
Always listen carefully to… Don’t throw… / unless…
Clean…away and leave …clean and neat
Don’t forget to…
You should tie…up Never put / nose directly into…
Remember that… Never put /fingers into/ and taste…
Make sure that…
Now list what you can do and can’t do in a lab as much as possible.
Knowing the rules in a lab is very necessary for the sake of our safety. Suppose you are a teacher and you are going to make an announcement to your students to give them some instructions before an experiment.
1. It suddenly starts raining with thunder and lighting .What are the things you should do and what are the things you should not do?
2. You want to do a science experiment in a physics class. Remember the safety instructions from the physics lab and practise them in English.
3. You want to go on a hiking trip in the mountains . What are the things you should do and what are the things you should not do?
4. You want to do a science experiment in a chemistry class. Remember the safety instructions from the chemistry lab and practise them in English.
Situations:
1
2
3
4
1. Have a discussion to find out the best rules for the lab and recommend it to the school leader.
2. Have a face-to-face interview with the prize winners or tutors (about science festival) .
3. Preview Speaking and try to search for some information about the new inventions and discoveries.
Homework:
In chemistry we learn about the way different liquids and materials react with each other.
back
In physics we can learn about the laws of the universe , for
example about Newton and the reason why all the things on
earth fall down.
back
In biology we learn about life on earth, for example by looking at the structure of cells.
back
Situation1: You are in a thunderstorm
• Dos:• If you are outdoors , go
home or to a safe place as quickly as possible.
• Stay indoors if you are at home.
• Close the windows if you are in a car.
• Keep your body low to the ground.
• ---
• Don’ts:• Don’t shelter in small
buildings. • Don’t stand under
trees .• Don’t use electrical
machines.• Don’t take a bath or
shower.• ---
back
Physics experiment
• Dos: • Be on time before the
experiment starts.• Carefully follow all
instructions.• Check all the
instruments to see if they are OK.
• Keep the lab clean.• ---
• Don’ts:• Don’t’ touch the
instruments before the experiment starts.
• Don’t leave the lab without the teacher’s permission.
• Don’t take anything from the lab.
• ---
back
Hiking trip
• Dos:• Wear good shoes and
clothes.• Bring a backpack.• Tell someone else
where you are going.• Bring water and a map.• Watch out for dangers
such as snakes.• Wear a hat • Bring a cell phone.• ---
• Don’t s:• Don’t go alone .• Don’t take unsafe
roads.• Don’t go on if you aren’t
felling well.• ---
back
Chemistry experiment
• Dos:• Keep chemicals and
instruments in order.• Keep quiet in the lab.• Take good care of the
instruments in the lab.• Keep the instruments
clean and dry.• ---
• Don’ts:• Don’t speak loudly.• Don’t walk around if
you don’t have to.• Don’t be late for the
experiment.• Don’t start without the
teacher’s permission.• ---
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