October 2018 1 22 Report

1. W tabeli podane są informacje o dwóch planetach :

Planeta

Średnica

Średnia odległość od Słońca

Merkury

4,9 x 10 do potęgi 3 km

5,8 x 10 do ptęgi 7 km

uran

5,2 x 10 do potęgi 4 km

2,9 x 10 do potęgi 9 km

a) Ile razy średnia odległość Merkurego od Słońca jest mniejsza od średniej odległości Urana od Słońca ?

b) O ile kilometrów średnica Urana jest większa od średnicy Merkurego ?

2.Czas wahnięcia ciężarka przywiązanego do nitki zależy od długości nitki . Aby obliczyć , po ilu sekundach ciężarek wykona pełne wahnięcie ( „tam i z powrotem ” ) , wystarczy pierwiastek kwadratowy z długości nitki ( w metrach ) pomnożyć przez 2 . Nitka jednego wahadła ma długość 1 m , a drugiego 2,25 m . Które wahadło ma dłuższy czas pełnego wahnięcia i o ile dłuższy ?

a) Ze złota można wykonać bardzo cieniutkie blaszki o grubości 2,5 x 10 do potęgi -7 m.

Ile to milimetrów ?

b) Odległość galaktyki Andromedy od Ziemi wynosi 2.3 x 10 do potęgi 23 m .

Ile to kilometrów ?

c) Objętość wód oceanów Ziemi to 1,4 x 10 do potęgi 9 km sześciennego .

Ile to litrów ?

d) Kontynenty przemieszczają się ze średnią prędkością 1,5 x 10 do potęgi -9 m/s .

Wyraź tę prędkość w kilometrach n godzinę .

Proszę o obliczenia !


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Pomożecie , Pilne ? Poniżej macie tekst do zadania 1 ;) 1.Grace: Are you all rigt , Annie ? You look really upset .Annie : No , I'm not all rigt . I've just been told something awful : a new bypass is being planned for the city .Niels: I don't understand . Isn't a bypass a road round a town ?Grace: Yes.Niels: But that's good ! Pollution and noise are reduced because cars go faster , and traffic stays out of the town centre .Annie: Yes , but it isn't all good news , I'm afraid .2.Annie: A new bypass will damage the environment ! A lot of trees will be cut down , and animals will lose their habitats .Jake: But lots of roads are being built all the time . One more won't make any difference !Niels: Yes . You like having a mobile phone - making phones causes pollution .Grace: And going on holiday by plane does , too .2.Grace : You didn't get upset two years ago when the car factory was built . A lot of trees were cut down then .Annie: I know , Grace . but I wasn't in the environmental club then . I didn't know about protecting habitats and . . .Jake: Well , a lot of people are employed at the factory , and that's a good thing .Annie: Yes , of course it is . But it has a price . Oh , I forgot to tell you , Jake .Jake: What ?Annie: The bypass will come quite close to our school .Jake: Oh . Will our school be knocked down , then ?Annie: No , but all the football pitches are going to be sold .Jake: No! That's awful .Annie: But that's progress Jacke .Zadanie 1Answer the questions .1. How does Annie feel about the bypass ?2. What happens to traffic when there's a bypass ?3. What happens to animals ?4.Why didn't Annie feel upset about the factory ?5. What part of the school will the bypass affect ?Zadanie 2.Przetłumacz :- doscovery- health- technology- invention- entertainment- pollution- transportZadanie 3 .Complete the sentensces with words from exercise 2 .1. We need to use modern technology to achieve positive results , not negative ones .2. Governments need to spend mre money on medical research in order to improve people's general ___________ .3. Making public ____________ cheaper encourages people to use their cars less .4. In some ways , the _________ of the computer is the best thing that ever happened ; in other ways , it's the worst .5. One of the results of the ___________ of radium was a great improvement in cancer treatment .6. People today have much more time for _______ , both at home and in public places like cinemas .
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