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Transforming Mars

Transforming Mars. Compared with Venus , Mars is similar to Earth in length of a day. _____. _________________. Venus( 金星 ). 5832 hours. /. 475℃. /. /. Transforming Mars. Low. No. No. Ice caps. Carbon dioxide. while, however, nonetheless. Contrast two ideas.

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Transforming Mars

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  1. Transforming Mars

  2. Compared withVenus, Mars is similar toEarthinlength of a day. _____ _________________. Venus(金星) 5832 hours / 475℃ / /

  3. Transforming Mars Low No No Ice caps Carbon dioxide while, however, nonetheless Contrast two ideas Whilethere is no water, there is lots of ice on Mars. Whilethere is no oxygen, there is lots of carbon dioxide in the atmosphere. _________. However, ____________. ________ . Nonetheless, _________ .

  4. Transforming Mars the mirrors in orbit round Mars ice ice caps black plants from Earth the chemicals into the air forests of trees involve doing The major tasks involve raisingtemperature,gettingwater, andmakingthe air breathable. Making the air breathable involves____________, and _________. Raising temperature involves ________, ________, and _______. Getting water involves __________.

  5. Transforming Mars the mirrors in orbit round Mars ice plants from Earth ice caps black the chemicals into the air forests of trees if Conditions Ifthe plants can survive on Mars, carbon dioxide ________________________. can be converted into oxygen . If the huge solar mirrors are put in orbit round Mars, the ice caps ____________. will be heated.

  6. If …. • Mars will be greener. • the sky of Mars will turn from pink to blue. • it can retain more heat. • he must wear spacesuit, because there is no oxygen on it. Mars will be greener. 1) a scientist walks on Mars at present, 2)forests of trees are planted on Mars, 3) there is enough oxygen on Mars, 4) the atmosphere becomes thicker, the sky of Mars will turn from pink to blue. it can retain more heat. he must wear spacesuit, because there is no oxygen on it.

  7. as long as Conditions Scientists can survive only as long as they wear spacesuits, because 95% of the atmosphere is carbon dioxide. As long as the amount of oxygen in the air rises to 20% 1.____________________________________________(只要空气中氧气的含量达到20%), more people can migrate from Earth. As long as there is enough water vapour 2._________________________________(只要有足够的水蒸气)，the first cloud will appear.

  8. Transforming Mars Rivers and small oceans breathable 10℃ so that, as a result Cause and result The temperature goes up, melting enough water ___________ rivers and small oceans are made. so that The temperature goes up, melting enough water. _____________, rivers and small oceans are made. As a result

  9. More practice so that, as a result Causes Results • The ice caps are sprayed black. • Chemicals are released into air. • Plants are introduced from Earth. • They don’t reflect the heat. • The atmosphere….. • Carbon dioxide…...

  10. Language points • similar • while, however, nonetheless • involve • if, as long as • so that, as a result

  11. Assignments • Read the text and finish Ex 2 in the textbook; • Review what is learnt today and finish the translation.

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