Unit 12 grade 8: Life On Other Planets – Skills 1
1.1. Task 1 Unit 12 grade 8
a. Look at the pictures and discuss the questions. (Look at the picture and discuss the question.)
first. What are the names of the two planets in pictures A and B?
(What are the names of the two planets in the picture?)
2. How do you think the pictures are different?
(How different do you think the images are?)
Guide to answer
1. A. Earth (The earth)
B. Mars (Mars)
2. Totally different. (Completely different.)
b. Read the text below and check your answers. (Read the text below and check your answers.)
1. Mars is called the red planet because of its red-covered surface. There have been many discoveries of Mars by humans since the mid-20th century. Scientists hope that we can find another planet to house human life.
2. There are many main reasons why the weather on Mars is not suitable for human life. Temperatures on Mars can drop as low as -87 degrees Celsius and rarely above 0 degrees Celsius. But the bigger problem is the lack of oxygen. 95% of the air is CO2 and this is toxic to breathe. Furthermore, there is no water on Mars even though scientists have found traces of it.
3. However, in the early 19th century, scientists discovered that Mars has some similarities with Earth. A day on Mars is 24 hours, 39 minutes and 35 seconds, roughly the same as a day on Earth. Mars also experiences seasons like Earth. However, these seasons are twice as long because a year on Mars lasts twice as long as a year on Earth.
1.2. Task 2 Unit 12 grade 8
Find words in the text that have similar meanings to these words or phrases. (Find words in the text that have similar meanings to these or phrases.)
Guide to answer
first. causing death or illness = poisonous (death or illness = poison)
2. two times = twice (twice = double)
3. has, goes through = experiences (yes, experience = experience)
4. marks or signs showing that something happened = traces (a sign or feature that something has happened = a trace)
5. the outside or top layer of something = surface (outer or top layer of something = surface)
6. weather conditions of a particular place = climate (weather conditions of a particular place = climate)
7. provide a place to live = accommodate (provide a place to live = provide)
1.3. Task 3 Unit 12 grade 8
Match the headings with the paragraphs (1-3). There is one extra. (Match titles with paragraphs (1-3.) There is a redundant sentence.)
Guide to answer
1 C. Explanation for the name of the Mars. (Explain the name of Mars.)
2.B. Reasons why we may not be able to live on Mars.
(The reasons why we might not be able to live on Mars.)
3.A. Reasons why we may be able to live on Mars.
(The reasons why we might live on Mars.)
1.4. Task 4 Unit 12 grade 8
Read the text again and answer the questions. (Read the text again and answer the questions.)
first. What is the other name for Mars? (What is another name for Mars?)
2. What are the lowest and the highest temperatures on Mars?
(Highest and lowest temperatures on Mars?)
3. Why is it poisonous to live on Mars? (Why is it so toxic to live on Mars?)
4. Which is longer, a day on Earth or a day on Mars ?
(Which is longer, a day on earth or a day on Mars?)
5. How long is a year on Mars? (How long is a year on Mars?)
Guide to answer
1. It is also called the Red Planet. (It is also called the red planet.)
2. The lowest temperature is -87 degrees Celsius and the highest may be a bit higher than zero.
(The lowest temperature is -87 degrees Celsius and the highest temperature is a little over 0 degrees.)
3. Because 95% of atmosohere is carbon dioxide. (Because 95% of the air is CO2.)
4. A day on Mars is a bit longer. (A day on Mars is a bit longer.)
5. It is twice as long as a year on Earth. (It’s twice as long as a year on Earth.)
2.1. Task 5 Unit 12 grade 8
Work in pairs. One is a human and the other is a Martian. Use the suggestions below to ask and answer about life on Earth and life on Mars. (Work in pairs. One is a human and the other is a man on Mars. Use the prompts below to ask and answer questions about life on Earth and on Mars.)
– So what kind of food do you eat? (So what food do you eat? )
– Well, we eat things like rice, bread, cooked meat. And you? (Oh, we eat things like rice, bread, cooked meat. How about you? )
Guide to answer
A: We eat tablets, rocks… What do you drink?
(We eat tablets, ice cubes… What do you drink? )
B: We drink water, juice… And you? (We drink water, juice… And you? )
A: We drink liquid from under the rock… How long do you sleep?
(We drink liquid from the ground… How long do you sleep? )
B: We sleep for 6-8 hours/night. And you? (We sleep for 6-8 hours a night. How about you? )
A: We sleep 2-3 hours/night. How do you travel?
(We sleep 2-3 hours a night. How do you get around? )
B: We travel by bicycle, car… And you? (We go by bicycle, car… How about you? )
A: We travel by flying cars, space buggies, UFOs…
(We go by flying cars, space cars, UFOs… )
REMOVE: How is your environment? (How is your environment? )
A: The environment has forests, lakes, oceans. Mountains, cities… And you?
(The environment has forests, lakes, oceans, mountains, cities… How about you? )
B: We have dry dessert, rocky landspace, caves…What problem do you have ?
(We have arid deserts, mountain views, caves… What’s your problem? )
A: We have diseases, pollution, overpopulation… And you?
(We have disease, pollution, overpopulation… How about you? )
B: We have survival, loneliness….
(We have survival, loneliness…)
2.2. Task 6 Unit 12 grade 8
Now swap pairs. The human of one pair works with the Martian of the other pair. Take turns to report what your previous partner said about life on their planet to your new partner to see if he/ she said similar things. (Now exchange in pairs. Humans make a pair to work with people on Mars as the other pair. Take turns reporting to your classmates in advance what they have said about life on their planet to your new friend to see if he/she says the same thing.)
3. Practice Task 1
Read the passage below and decide whether the statements are TRUE or FALSE?
Long ago, people thought the Moon was a god and we would never be able to reach it. However, the invention of telescopes in 1608 enabled people to learn that the Moon is just another planetary body. And mankind’s dream of walking on the Moon suddenly seemed possible.
The dream came true on July 20th, 1969 when Neil Armstrong, Buzz Aldrin, and Michael Collins flew to the Moon as part of the Apollo 11 lunar mission. Neil Armstrong was the first to step onto the Moon. After admiring the tranquil, desolate beauty of the Moon’s surface, Neil Armstrong and Buzz Aldrin completed their mission, while Collins stayed in orbit to maintain the systems on board the spacecraft.
During the stay of more than twenty-one hours on the Moon’s surface, the astronauts found no rain or wind at all. The Moon was like a desert with plains, mountains, and valleys. The surface was covered with dust, which was so thick that they left footprints where they had walked. They left a United States of America flag there and return to Earth with forty-six pounds of moon rock for scientific study.
Question 1: People have known all about the Moon for thousands of years
Question 2: The invention of telescopes helped people to understand that the Moon is not a god.
Question 3: Only Neil Armstrong and Buzz Aldrin stepped onto the Moon.
Question 4: The climate on the Moon was unfriendly, with a lot of rain and wind
Question 5: The astronauts stayed on the Moon for nearly one day
4. Practice Task 2
Choose the letter A, B, C or D to answer these following questions
A new study published in the journal Science shows definitive evidence of organic matter on the surface of Mars. The data was collected by NASA’s nuclear-powered rover Curiosity. It confirmed earlier findings that Mars, the Red Planet once contained carbon-based compounds. These compounds – also called organic molecules – are essential ingredients for life as scientists understand it.
The organic molecules were found in Mars’s Gale Crater, a large area that may have been a watery lake over three billion years ago. The rover encountered traces of the molecule in rocks extracted from the area. The rocks also contain sulfur, which scientists speculated helped preserve the organics even when the rocks were exposed to the harsh radiation on the surface of the planet.
Scientists are quick to state that the presence of these organic molecules is not sufficient evidence for ancient life on Mars, as the molecules could have been formed by non-living processes. But it’s still one of the most surprising discoveries, which could lead to future revelations. Especially when one considers the other starting to find that Curiosity uncovered around five years ago.
Question 1: Did Mars contain carbon-based compounds?
A. Yes, it did B. no, it didn’t
Question 2: What may have been in Mars’s Gale Crater?
A. a mountain B. a forest C. a lake D. a hill
Question 3: What was the role of sulfur in the rocks?
A. It helped preserve the organics B. It formed the rocks
C. It made the atmosphere D. It made life possible
Question 4: Have there been enough evidence to confirm the existence of life on Mars?
A. Yes, there have B. No, there haven’t
Question 5: Why are the evidence in sufficient to claim life on Mars?
A. The molecules could have been formed by non-living processes.
B. The molecules exist everywhere on the planet.
C. All planets have these molecules.
D. The existence of these molecules is not strong enough
At the end of the lesson, the children need to reread the article about Mars and its similarities and differences with Earth, practice asking and answering about life on Mars and on Earth; Also memorize the following words:
- poisonous (adj): poisoned
- experiences (n): experience
- traces (n): traces
- climate (n): climate
- accommodate (v): adapt
- surface (n): surface