《365个科技真相》本书改编组著|(epub+azw3+mobi+pdf)电子书下载

图书名称：《365个科技真相》

【作　者】本书改编组著

【丛书名】365初中英语天天阅读系列

【页 数】 184

【出版社】 上海：上海教育出版社 , 2020.06

【ISBN号】978-7-5720-0042-3

【价 格】50.00

【分 类】英语-阅读教学-初中-课外读物

【参考文献】 本书改编组著. 365个科技真相. 上海：上海教育出版社, 2020.06.

图书封面：

图书目录：

《365个科技真相》内容提要：

本书采撷了全球科学与技术的前沿发展，以每天一篇科普短文为青少年读者详细解读最新的科技发展。上册179天围绕物理、化学、生物学、地球科学给出了179个有趣又奇妙的科学知识。有些知识在生活中能观察到，如泡在牛奶里的麦片受浮力和引力的影响而呈现出不同的悬浮效果；有些则令人大为惊叹，如活到80岁的普通人，一生走的路竟然有5个赤道那么长；有些则与我们正在经历的新冠疫情有关，如病毒是什么，哪位科学家用何种方式首次发现了病毒。这些科学知识涉及了相当多的学科词汇，为此中方作者做了十分细致的注释工作，把新词、词组和专业词汇都按序罗列，并给出了音标、词性和释义。《365个科技真相（上册）》每天一篇科普短文，既能开拓青少年的科技全球视野，又能提升他们的英语阅读能力。

《365个科技真相》内容试读

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PHYSICSe

(物理)

The 'knowledge of nature',or physics,is a natural sciencethat includes the study of matter,its movement in space andtime,energy and force.Its main goal is to understand howthe universe behaves.Physics is one of the oldest knownfields of study and usually explains all the other sciences.Itis ever-evolving,expanding almost every day to cover newtechnologies and exciting discoveries in the09Yknown universe and beyond.

1 We Are as Wee as a Sugar Cube(我们能缩小到一颗方糖那么小)

Even though the human race is large enough to occupy almosthalf the Earth's surface,it can strangely also fit into the volume ofa sugar cube.Before you go crazy wondering how,here's an easyexplanation that may help you understand the phenomena.

Each human being is made up of a countless number of atoms.

And atoms,as we know,are 99.99 per cent empty space.Thatwould almost be equivalent to the space between the Sun and the

Earth,which sure is a lot of space!Should all this space be takenout,the entire human race could becompressed enough to fit into one

1.What does 'We'refer to in the title?

single sugar cube.Mind-boggling,

2.Explain 'We Are as Wee as a Sugar

Cube'according to the article.

isn't it?

1

365 Science and Technology Facts

365个科技真相（上册）

2 Magnetic Water(带磁性的水）

Did you know that apart from its life-giving properties,water alsoembodies certain magnetic properties?In other words,water can actlike a magnet.

So,if you rub a comb to a piece of wool and hold it near a tapof running water,you will notice that the water seems to movetowards the comb.Water contains several dissolved ions,positiveand negative.When you hold a negatively charged comb close to therunning water,it repels the negative charge in the water,sending itback up into the tap and all we are left with are positively chargedions.As droplets of water flow down the tap,the positively chargedions in it are attracted tonegatively charged ions

1.Why is the comb negatively charged?

in the comb,causing the

2.If we hold a positively charged comb

water to get attracted to

close to the running water,willthe arrows on the picture change

the comb and swirl by its

direction?Give your reasons.

side.

3 Clumping Cheerios(麦圈效应

Have you ever wondered why the cereal in a bowl of milk clumpstogether,while some pieces simply cling to the edge of the bowl?Thebasic principle behind this is buoyancy,which helps an object to floatin water.This floating cereal causes a slight depression on the surfaceof the milk.Since there's more than one piece of cereal in our bowl,thedepression is much more,which brings all the pieces of the cereal close

to each other,causing them to clump together.This effect may also be termed as the

Cheerios Effect'.

1.Write 'Cheerios Effect'or 'Meniscus

Effect'on the proper place in the

The pieces that cling to the sides of the

picture.

bowl do so due to a phenomenon known

2.If several pieces of Oreos are put in

as the 'Meniscus Effect'.A meniscus is an

a bowl of milk,will 'Cheerios Effect'

upward or downward curve.The meniscus in

happen?Give your reasons.

the bowl of milk is floating upwards and this is what causes

①buoyancy浮力

the cereal to float upward along the edges of the bowl.

②meniscus弯月面

Physics

(物理)

4 Cereal Magic(麦片魔法）

We are all familiar with the tall claims made by advertisers thatcertain foods have vitamins and minerals.But sometimes,what theysay is true,especially when they say cereal has added iron in it.Mostcereal we eat does,in fact,have a certain amount of iron added to it.

To do a quick test of this,grind some cereal with water and add this toa bowl.Now drop a piece of the magnet into this bowl and stir.Take outthe magnet after five minutes.You will notice tiny specks of iron stuckto the magnet.Sounds like something fun to try,along with your

healthy dose of cereal every morning.Now,with food and factscombined,we aresure that breakfast

1.What is cereal magic?

mornings are going to

2.What is the writer's attitude toward

be a lot more interesting!

advertisements?

5 Yell for Coffee!(吼热一杯咖啡！)

As weird as this may sound,yelling for eight years,seven months andsix days can produce enough heat to brew one cup of coffee.This isbecause the chemical energy from yelling gets converted to soundenergy,which gets converted to vibrations that cause a slight rise inthe temperature around us.It is this rise in temperature that wouldlead the coffee to heat up.So,while yelling for eight long years really

doesn't make sense,you

1.How long do we need to yell for a

could try it when you are

cup of coffee?

feeling cold and do not

2.Energy can change from one form toanother.Can you give more examples?

have something to warmyou up.

3

365 Science and Technology Facts I

365个科技真相（上册）

6 Eggs-They Love a Good Spin

(爱旋转的蛋)

Be it a raw egg or a hard boiled one,eggs totally love a goodspin.Sounds funny?Well then,try it yourself.

Take a raw egg and a hard-boiled egg and set bothspinning.Both the eggs stop spinning as soon as you trystopping them.However,you will notice the raw egg beginsspinning on its own once again.This is because,whilethe shell has been stopped,the liquid inside the egg still

continues to spin.

1.What's the difference between

Now in the case of a hard-boiled egg,

a raw egg and a hard-boiled eggwhile spinning☑

set it rotating at a super-fast speed,and

2.Which toy does a hard-boiled egg

you will notice that instead of spinning

spinning vertically make you think

horizontally like it generally does,the

of?Is it the same as the hard-boiledegg?

egg spins vertically and begins to stand.

7 How to Spot an Old Egg（如何识别陈蛋

The shell of an egg is made up of around 7,000 tiny pores that allow the passage of carbondioxide and oxygen through it.If kept for a long time,bacteria enter the egg throughthese pores,causing the egg to rot.Apart from this,an egg has two membranes:theouter and the inner membrane.When an egg is freshly laid,it is warm.However,with timeit starts cooling.As it cools,the inner membrane contracts,while the outer one doesn't.

This causes an air pocket to form between both the membranes.As time passes,more

air enters this air pocket.Thus,when you put a

relatively fresh egg in water it sinks,while an egg that isold will float due to the amount of air it has in it.

1.Which one of the eggs in thepicture is old?Why?

2.If you don't have water on hand,how can you spot an old egg?

①membrane膜状物

Physics

(物理)

8 Toasted in a Bolt of Lightning(闪电烤面包)

The most exciting part of a thunderstorm is the lightning that it brings in its wake.The whole sky aroundus lights up,looking like ten thousand sparkling stars.But what is even more exciting is the fact thatfrom now on when the weather guy informs you that a thunderstorm is on its way,a toast party issomething you should think about!Why is that?

Believe it or not,just one bolt of lightning can provide enough power to a 1,000-watt,double slicetoaster for 84,000 minutes.This large amount of energyis more than sufficient to toast around 100,000 slices of

1.How long can two bolts of lightning

bread in one go.That is more than enough bread for your

make a 1,ooo-watt,double slice

schoolmates,your dance class friends,your art class

toaster work?

2.Can we collect lightning energy?

friends and the entire neighbourhood!

Give your reason(s).

Perfect for a toast party,isn't it?

How Rocket-tea!（火箭茶包！)

Believe it or not,when a teabag is lit from the top,it actually resemblesa rocket as it takes off into the air.

This happens because as the teabag is set ablaze,and begins to burn,the air inside expands since it is heated up.This expansion causes theair to lose its density,and be pushed up into the air by the cooler air thatsurrounds it.This explains why hot air rises,while cooler air remains at thebottom.Well,this also explains why a teabag which is set on fire resembles arocket that's just taken off.This is toocool an experiment not to try,but just a

1.What does the title mean?

word of caution:this could also be too hot

2.How does a rocket take off into the

an experiment and hence whenever you

air?

undertake it,makesure you havean adultaround you.

5

365 Science and Technology Facts

365个科技真相（上册）

10 The Mpemba Effect

(姆潘巴现象)

Who doesn't love the crunch of a chilled icecube in their mouth?We all do!But the nexttime you are about to freeze those ice cubes,try this:instead of cold water,add some hotwater into those ice cube trays.What happenswill be hard to believe.The hot water will freezefaster than the cold.Why so?

This phenomenon is known as the'Mpemba Effect',where due to its heat,the hot water tends to evaporate at amuch faster rate than the cold water.

Therefore,there is a lesser amount ofvolume present in the cooler water,causingit to freeze faster.

0

00.

1.What is the Mpemba Effect?

2.Do you believe in the Mpemba Effect?

l1 Sinking and Floating(下沉与漂浮)

When Neil put up his counter to sell lemonade in summer,his aunt Martha handed him a little limethat she thought he could use.So,Neil decided to slice the lime and add it to his jug of lemonade.

But doing so left him confused as ever because while the lemons floated,the lime began to sink.Neil

wondered,why?

That's when aunt Martha explained to him that alime has a higher density as compared to a lemon.Andthis is exactly what causes limes to sink and lemonsto float in water.We bet with this information,ourlemonadeboy Neil

1.Write the names of the two kinds of

will not be

fruit in the picture.

as confused

2.Why are these two kinds of fruit indifferent states?

anymore.

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