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(共31张PPT)
Unit 6
Survival
Developing ideas Reading
1. To deepen your understanding of the subject---survival, understand the importance of protecting the Earth and promote humans spirit of exploration and adaptability.
2. To make correct inferences and get the evidences.
3. To conduct an interview about living on Mars.
Learning objectives
Environmental Crisis
How to survive the environmental crisis
Could we actually live on Mars
Where is Mars How much do you know about Mars
Complete the quiz and find out how much you know about Mars. Try to guess if you are not sure of the answers.
Mars is slightly more than half the size of Earth, with corresponding lower gravity. It’s a dry, rocky planet, with white polar “ice” caps that consist mostly of frozen carbon dioxide. The average temperature on Mars is minus 63 degrees Celsius. A day on Mars is about as long as a day on Earth, plus about 39 minutes. Seasons and years are twice as long as they are on Earth.
Since the 1960s, Mars has been the subject of several unmanned exploration missions. However, many such early missions failed.
More About Mars
It may be difficult to imagine when people will live on the planet Mars.
Predict the main idea according to the title and the pictures.
Read the passage and find out why humans might live on Mars.
Work out the main idea of each paragraph.
Why do we have Plan B for Earth
Why is Mars our Plan B
What are the challenges of moving to Mars
Humans’ exploration related to Mars.
Right now, Earth is the only home we have!
Paragraph 1
Paragraph 2
Paragraph 3
Paragraph 4
Paragraph 5
Why do we have Plan B for Earth
Paragraph 1
In the 1960s and 1970s,the greatest fear was that the human race, and possibly all advanced life forms on the planet, could be wiped out by nuclear missiles, just at the push of a button .Today, however, environmental problems have taken over as the greatest risk to life on Earth. Scientists are thinking of ways to lower this risk, such as replacing coal and oil with forms of renewable energy. But they are also preparing for the worst what can we do if the terrifying scenes in films such as The Day After Tomorrow happen in real life What is our Plan B for Earth
Why do we have Plan B for Earth
Paragraph 1
The greatest ___________
in 1960s and 1970s
nuclear missiles
Today the greatest _______
to life on Earth
_____________________
fear
risk
environmental problems
Have you seen the film
“The Day After Tomorrow”
The Day After Tomorrow is a 2004 American science-fiction disaster film. The film is based on the book The Coming Global Superstorm by Art Bell and Whitley Strieber. The film depicts the catastrophic effects of climate change, with extreme weather events leading to global cooling and a new ice age.
Why is Mars our Plan B
Paragraph 2
One option is to explore other planets to see if we could live on them. The most likely choice is Mars, which is relatively close to Earth and has an environment less hostile than that of other planets. Mars has fascinated people since ancient times, and today our interest in Martain exploration is greater than ever before. Films such as The Martian enjoy worldwide popularity. More governments and organisations are making efforts to educate the public on the Red Planet, for example, the Mars Desert Research Station in the Utah desert of the US and the Mars Village in North-west China’s Qinghai Province.
Why is Mars our Plan B
Paragraph 2
___________ close to Earth
Less hostile environment
Today ___________ in Martian exploration is greater than ever before.
Relatively
our interest
Films such as The Martian enjoy worldwide popularity
the Mars Desert Research Station
The Mars Village
More governments and organisations are making efforts to educate the public on the Red Planet.
Humans’ exploration related to Mars.
Paragraph 3
Since the 1960s, we have been sending unmanned spacecraft to Mars. Our probes have orbited the planet, sending back valuable data and stunning images. Our robots have explored the Martian surface, testing the soil and searching for resources, water and signs of life. Encouraged by discoveries over the years, space agencies of various countries are planning manned missions to Mars that could take place within the next 25 years.
Humans’ exploration related to Mars.
Paragraph 3
Since the 1960s, we have been sending unmanned spacecraft to Mars. Our probes have orbited the planet, sending back valuable data and stunning images.
Our robots have explored the Martian surface, testing the soil and searching for resources, water and signs of life.
Within the next 25 years, human beings are planning manned missions to Mars.
What are the challenges of moving to Mars
Paragraph 4
There is no doubt that humankind is drawn towards Mars, with dreams of making it our second home. However, sending people there will require all the skill, courage and intelligence of the human race. While the Moon can be reached within days, it would take months to reach Mars, travelling through dangerous solar radiation. And even if the first settlers do reach Mars safely, they may not be able to return to Earth-ever. Staying alive will be a daily challenge, but as proved by the Biosphere 2 experiment, not impossible.
As early as the 1980s, scientists were building Biosphere 2 in the Arizona desert. It consisted of a closed space in which people, animals and plants could live together. The closed" concept meant that the space was designed to function with its own oxygen, food and water, needing nothing from the outside world. Although the two-year experiment was not a success, it did provide us with a better understanding of how humans might be able to live on another planet. More recently, scientists have succeeded in growing a variety of plants in an environment similar to that on Mars. That definitely is a big step forward.
What are the challenges of moving to Mars
Paragraph 4
What are the challenges of moving to Mars
Paragraph 4
1
2
3
4
Staying alive will be _________________, but not impossible.
Sending people there will require all the skill, _______ and ___________ of the human race.
It would ___________ to reach Mars, travelling through _____________ solar radiation.
Even if ______________ do reach Mars safely, they may not be able to return to Earth-ever.
courage
intelligence
take months
dangerous
the first settlers
a daily challenge
Biosphere 2 experiment
possible
a closed space
People, animals and plants could _____________.
live together
Function: own oxygen, food and water, needing nothing from the ________________.
outside world
unsuccessful
Provide us with a better understanding.
A big step forward.
Right now, Earth is the only home we have!
Paragraph 5
For now, human settlement of Mars is still decades away. In the meantime, scientific research shows that the planet Earth is getting warmer. This change is being caused by human activity and is having a terrible effect on the biosphere. Until we are finally able to live on another planet, we need to take much better care of our own. Right now, it's the only one we have!
Right now, Earth is the only home we have!
Paragraph 5
To settle Mars is ___________.
Earth is ________________.
Human activity have a terrible effect on the biosphere.
decades away
getting warmer
Until we are finally able to live on another planet, we need to take much better care of Earth.
How to protect the environment (the Earth)
control air pollution
protect the forest and sea resources
stop any environmental pollution
We should...
protect water environment, save water resources
protect rare animals and plants
reduce the use of motor vehicle
carry on waste recovery use
Choose the magazine in which you would most likely find the passage？
All About Space
The Traveller
Environmental Concerns
Biology for Fun
Choose the statements that can be inferred from the passage.
Humans have yet not visited Mars.
People want to go to Mars on holiday.
There are plants growing on Mars.
The greatest to life on Earth used to be nuclear missiles.
One day, humans will have to go and live on another planet.
Our Plan A includes developing renewable energy resources.
The Biosphere 2 experiment ended in failure.
Work in pairs. Conduct an interview about living on Mars.
Decide your roles.
Look at the sample questions about living on Mars and add any more you can think of. Then write down some answers.
Think & Share
What the theme do the two passages in this unit have in common On what aspects does each passage focus
The two passages share the theme of protecting our living environments. The first passage focuses on balancing nature and urban development, and the need for harmony between humans and animals. The second passage focuses on our need to protect Earth even if we intend to settle on other places such as Mars in future.

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