Traduccion Ingles

planet saving technology

before you read

1.- answer and discuss these questions in your group.
a. what is the most important technological inventionof all time?
b. what technological invention in your house coul you not live without?
c. how does technology affect our lives and planet?

2.- Classify the words in the box under the corresponding category.
Astronomer -astronomy–chemist -chemistry -design -designer -ecologist -ecology -engineer -engineering -geneticist - genetics -physicist -physics -research -researcher -science - scientost.

discipline/field | people who work in it |
| |

3.- which words in exercise 2 look or sound similar in Spanish?

4.- which words from exercise would you expect tofind in a text about ¨green¨ technology?

While you read
5.- read the text on pages 50 and 51 and check your predictions in exercise 4.
6.- what kind of text is it? Choose one option.
A. a newspaper article. B. a brochure. C. a webpage.
7.- this text has some scientific words such as photovoltaic and phytoremediation. Read the text again and find at least 5 other scientific terms. Can youdeduce their meaning? Check the meaning of the other words in a dictionary.

8.- read the text again and choose one heading (a.-d.) for each part of the text (I.-III.). There is one heading you do not need to use.
A. fresh from salty water. C. making the sun work for us.
b. harnessing the power of the wind. D. natural disposal of toxic waste.9.- read the text again. Find and classify at least 3 more inventions of each type.
Conventional inventions ¨green¨ inventions
Calculator_______ solar cells___________

10.- these words are highlighted in the text. What do they refer to?
a.- it (I, paragraph 1, line 6) it refers to _________
b.- they (I, paragraph 3, line 4) it refers to _________
c.- we (II, paragraph 2,line 5) it refers to _________
d.- it (II, paragraph 4, line 3) it refers to _________
e.- it (III, paragraph 2, line 1) it refers to _________
f.- they (III, paragraph 4, line 2) it refers to _________

11.- read the text once more and list at least one advantage and one disadvantage for each invention.

Text 1
Solar energy is the sun´s rays (solar radiation) that reach the earth ; it canbe converted into other forms of energy, such as heat and electricity. In fact, as far back as the 1830s, british astronomer john Herschel proposed that a solar thermal collector box be used to cook food during an expedition to Africa.
Today, energy specialists suggest that the energy of the sun can have other uses, for example converting it into thermal energy to heat water for use in homes,buildings, or swimming pools, and to heat spaces such as the inside of greenhouses, homes, and other buildings.
Solar energy can be converted into electricity in two ways:
* Photovoltaic devices (PV devices) or solar cells change sunlight directly into electricity. PV systems are often used in remote locations that are not connected to the electric grid. They are also used to power watches,calculators, and lighted road signs.
* Solar power plants indirectly generate electricity when the heat from solar thermal collectors is used to heat a fluid which produces steam that is used to power generators.
Even though the rays of the sun are readily available, there are still some disadvantages: the amount of sunlight that arrives on the earth´s surface is not constant and depends onlocation, time of day, time of year, and weather conditions.
Today electrical engineers recommend that we install solar panels is areas with stable solar conditions such as deserts and sunny areas.

II text
Humans cannot drink saline water, but saline water can be made into freshwater; this process is called desalination. As long as we have lots of salty water, we can make plenty of...