高二英语Transforming mars课件

1、Transforming Mars1234567891. Mercury2. Venus3. Earth4. Mars5. Jupiter6.Saturn7.Uranus8.Neptune9. PlutoEarth VS MarsForm (1)EarthMarsLength of one day 24 hoursLength of one year365 daysIs there water?YesThere is_, but there is_.Main gases in atmosphereNitrogen 78%, oxygen 21%Average temperature15CGra

2、vity: weight of a 60 kg person60kgAbout _Average distance from the Sun150 million km_ km 24.5 hours687 earth days, 668 Martian daysno watera lot of ice-60 C95% carbon dioxide20kg228 millionTransforming StagesArrange the stages in right order15247863Teachers deskTransforming Stage 1(AD 2030-2045) Exp

3、edition Underground buildings Experiments Look for site for future landings Check for signs of life Survive, spacesuits Low gravity, move easilyTransforming Stage 2(AD 2045-2095) Huge solar mirrors, heat ice caps Spray black, not reflect heat away Chemicals released Atmosphere thicker, retain more h

4、eat Greenhouse effect start -40CTransforming Stage 3(AD 2095-2130) Plants introduced Carbon dioxide, convert into oxygen First clouds Sky, from pink to blue -15CTransforming Stage 4(AD 2130-2145)towns Warming continue Melt more ice Rivers and small oceans People migrate (move), construct towns Trees

5、 Look greener 0CTransforming Stage 5(AD 2145-2185) More like Earth The amount of oxygen rises Inhabitants, without spacesuits 10C cities, farms, industries all overDebate: Whether it is really worth transforming Mars and make it our colony.15247863Teachers deskForAgainstReadingDestination MarsUnderl

6、ine sentences to support your ideaRequirement of debate Clear Loud Confident Polite Impressive Logical and reasonable Mars is a goalworthy ofonly the greatest effortsthat we can offer as a civilization.We cannot fly to Mars“on the wings of love”,Or even fuel our rocketswith hopes and dreams.Instead,it is by the sweat of our brow,the ache of our musclesand the drive of our willthat we have alwaysblazed the trial of exploration.And we willcontinue to do soin the future.Homework Find further information on Mars and solar system if you are interested http:/ma