Bài tập Tiếng Anh Lớp 8 Global Success - Unit 12: Life on other planet

 13 fast-flying /fɑːst 'ˈflaɪɪŋ
 n, phr người bay truyền tin nhanh
 messenger ˈmesɪndʒər/
14 galaxy n /ˈɡổləksi/ ngõn hà
15 incident n /'ɪnsɪdənt/ sự cố
16 lightening n /' laɪtnɪŋ/ chúp
17 lack v /lổk/ thiếu 
 lack of n /lổk əv/ sự thiếu
18 language barrier n /ˈlổŋɡwɪdʒ ˈbổriər/ rào cản ngụn ngữ
19 misunderstand v /ˌmɪsʌndərˈstổnd/ hiểu nhầm 
 misunderstanding n /ˌmɪsʌndərˈstổndɪŋ/ sự hiểu nhầm
20 NASA = National Cơ quan 
 Aeronautics Space n /'nổssə/ Quản lý Khụng gian 
 Administration Hàng khụng Quốc gia
21 name after v, phr /neɪm ˈổftər/ đặt theo tờn của
22 oxygen tank n / ˈɒksɪdʒən tổŋk/ bỡnh ụ-xy
23 replace v /r'ɪpleɪs/ thay thế 
 replacement n /rɪ'pleɪsmənt/ sự thay thế
24 solar system n /ˈsəʊlə sɪstəm hệ Mặt trời
 Mercury n /ˈmɜːrkjəri/ Sao Thủy
 Mars n /mɑːrz/ Sao Hỏa
 Venus n /'vi:nəs/ Sao Kim
 Saturn n /'sổtɜːn/ Sao Thổ
 Neptune n /'neptju:n/ Sao Hải Vương
 Jupiter n /ˈdʒuːpɪtər/ Sao Mộc
25 space buggy n /speɪs ˈbʌɡɪ/ xe thỏm hiểm khụng gian
 space shuttle n /speɪs ˈʃʌtl/ tàu con thoi (tàu vũ trụ)
 space suit n /speɪs su:t/ bộ đồ khụng gian
26 surface n /’sɜːf ɪs/ bề mặt
27 signal n /'sɪgnəl/ tớn hiệu
28 terrorist n /' terərɪst/ kẻ khủng asked C
 S2 V O
 S1 wanted to know wh (đổi
 (đổi ngụi) (lựi thời) (đổi ngụi)
 wondered trạng ngữ)
E.g. She asked: “When will you go camping?” She asked me when I would go camping.
 Note
- Khụng dựng say và tell cho cõu hỏi giỏn tiếp.
E.g. She said to me when I would go camping. (Incorrect)
 She asked me when I would go camping. (Correct)
- Khi chuyển cõu hỏi giỏn tiếp, bỏ trợ động từ do/does/did và lựi thời của động từ chớnh. (Cỏc trợ 
động từ khỏc phải đặt sau chủ ngữ và lựi thời.)
E.g. She asked: “Do you like chocolate?”
 She asked me if did I like chocolate. (Incorrect)
 She asked me if I liked chocolate. (Correct)
- Cỏc quy tắc đổi ngụi, đổi trạng ngữ ỏp dụng tương tự giống cõu kể.
- Cỏc quy tắc đổi ngụi, đổi trạng ngữ ỏp dụng tương tự giống cõu kể.
- Bắt buộc phải dựng If/whether để nối cõu nghi vấn và từ để hỏi W-H để nối cõu hỏi thụng tin.
 Tip
“Do / Does + S + V?” S + V-ed/P1.
“Did + S + V?” S + had P2.
“Is / Am / Are + S + C / V-ing?” S + was / were + C / V-ing.
“Was / Were + S + C / V-ing ?” S + had been + C / V-ing.
D. PRACTICE
A. PHONETICS
I. Decide whether the sentences have falling tone (F) or rising tone (R).
1. How big are the moons of Jupiter? (___)
2. The surface of Mars has many volcanoes (___), canyons (___), and craters.
3. Is Mercury the closest planet to the Sun? (___)
4. Who developed the nebular hypothesis? (___)
5. Is there life on other planets? (___)
6. What is the largest satellite of Uranus? (___) 10. The largest known impact _____________ in the Solar System is a huge unnamed scar on the 
surface of Mars, 10,600 km long by 8,500 km wide.
II. Match the words with their definition.
1. Earth a. It is the second planet from the Sun and the sixth-largest planet in the Solar 
 System.
2. Uranus b. It is nicknamed the red planet because it is covered with rust-like dust.
3. Jupiter c. It is the fifth planet from the Sun and the biggest planet of our Solar System.
4. Neptune d. It is the sixth planet from the Sun, with the largest planetary rings in the Solar 
 System.
5. Mars e. It is the seventh planet from the Sun and the third-largest planet in the Solar 
 System.
6. Saturn f. It is the farthest planet from the Sun at an average distance of 4.5 billion 
 kilometres.
7. Venus g. It is the closest planet to the Sun and also the smallest planet in the Solar 
 System.
8. Mercury h. It is the third planet from the Sun and the fifth largest planet in the Solar 
 System.
Answer:
1- 2- 3- 4- 5- 6- 7- 8-
III. Choose the best answer to complete the sentences.
1. In 1957 the Soviet Union launched the first satellite to _______ the Earth. 
A. move B. orbit C. travel D. fly
2. If _______ existed and were living out there, what types of signals would they send us? 
A. scientists B. astronauts C. aliens D. explorers
3. Researchers made the amazing findings of _______ of water on Mars.
A. footprints B. trips C. paths D. traces
4. We can only see _______ in the sky at night because during the day the sunlight is so bright.
A. the Earth B. stars C. aliens D. UFO
5. I think the availability of liquid water is the most important factor that makes a planet _______. 
A. habitable B. unsuitable C. dead D. impossible C. GRAMMAR
I. Choose the correct answer.
1. The teacher asked the students, “What (is astronomy/ astronomy is)?”
2. Kelvin asked his father, “Who (did name/ named) the planets?”
3. He wanted to know why (do planets revolve/ planets revolve) around the sun.
4. “What (is the sun made of/ the sun is made of)?” asked my sister.
5. Joe asked, “Where (the spiral arms are located/ are the spiral arms located)?”
6. The reporter asked us how deep (was the water/ the water was) on Mars.
7. She asked the professor why (Pluto was/ was Pluto) no longer a planet.
8. Carole asked her brother, “Who (discovered Mercury/ did Mercury discover)?”
9. Jim asked me when (the planets would be/ will the planets be) visible at the same time.
10. She asked how many planets (are there/ there were) in the Milky Way.
II. Change the sentences into reported speech.
1. “Why is there no gravity in space?” 
 Susan asked her teacher
2. “How far is it from the earth to the sun?” 
 Paul asked Helen
3. “Can black holes get smaller?” 
 Natalie asked Alexander
4. “Are you reading about UFO sightings?” 
 Johnson asked Melinda
5. “Could there be life on Mars?” 
 Penelope asked Nicholas
6. “Is there actually life somewhere in the Solar System outside Earth?” 
 Bella asked Nolan
7. “Did intelligent life exist on that planet billions years ago?” 
 Stella asks Alice
8. “Are we alone in the Milky Way galaxy?” 
 Chloe asked Grace
9. “What will you do with these alien toys?” C. did meteors usually came D. did meteors usually come
4. She asked, “How much _______ about our Solar System?” 
A. do you know B. you know C. you knew D. you will know 
5. Hannah asked Alison _______ earth-like planets the Milky Way might have. 
A. whether B. if C. how many D. what
6. William asked Gwen, “Will Allen be able to come _______?” 
A. that day B. the day after C. the following day D. tomorrow
7. Santiago asked Gabriel, “What _______ the most distant black hole ever seen?” 
A. is B. has been C. had been D. would be
8. She wanted to know where _______ on Mars. 
A. did Perseverance land B. Perseverance landed 
C. Perseverance lands D. Perseverance land
9. Daniel asked Nolan if he would help him learn about constellations _______. 
A. tomorrow night B. the night after tomorrow 
C. next night D. that night
10. He asked, “How many planets _______ in the Solar System?” 
A. is there B. there is C. are there D. there are
V. Choose the underlined part that needs correcting.
1. Jason asked Nathan how could people learn about black holes if they trapped both dark matter and 
light.
A. asked B. could people C. if D. trapped
2. I asked the scientist, “What will happen to the planets when the Sun became a red giant?”
A. will happened B. when C. became D. giant
3. Sarah asked Abigail if scientists could discovered more planets outside the Solar System.
A. asked B. if C. discovered D. outside
4. They wanted to know when did astronauts orbited the moon and later walked on its surface. 
A. wanted B. did C. orbited D. walked
5. Scientists said that they estimated the age of the universe by using the movement of stars to 
measure their expanding speed.
A. said B. estimated C. using D. their
6. The student asked, “How many sunlight does the surface reflect instead of absorbing?” ___ Oh, don’t you know that scientists have found some potentially habitable exoplanets outside 
 the solar system?
___ I’m not sure about it. Not in this century!
___ Yes, I have. Sometimes I dreamt of life outside the earth when I watched sciencefiction movies 
 and read articles or books about astronomy. But I think humans won’t be able to live on 
 another planet.
___ Why not?
_1_ Have you ever thought of living on another planet?
___ Because it’s too far from US. It would take US light-years to reach a habitable planet with the 
 existing technology, supposing that we find one.
___ Yes, I know. But I believe scientists will invent a super spaceship space travel in the future 
 which helps to reduce the time they travel in space.
___ What is the closest habitable planet to Earth then? How far is it?
___ In August 2016 astronomers announced the discovery of a rocky planet in the habitable zone 
 of Proxima Centauri, which is the closest star to our Solar System. The planet is located 
 approximately 4.2 light-years from Earth.
E. READING
I. Read the passage and decide whether the statements are TRUE (T) or FALSE (F).
The word alien is a popular word for an extraterrestrial life-form, or a being from another planet. No 
one knows whether there is life elsewhere in the universe. But some scientists think that it is possible.
Whether life exists on other planets or not, the idea of aliens has excited people for years. Lots of 
people enjoy science fiction stories about aliens - also called extraterrestrials. Some believe that 
aliens actually have visited Earth. Many people have reported seeing unusual objects in the sky. Some 
think that these UFOs are alien spaceships. The presence of aliens on Earth has never been proven, 
however.
Most scientists believe that for another planet to have life on it, it must be similar to Earth in several 
ways. It is likely to need an atmosphere and water. It also must orbit a star, like the Sun, at a good 
distance. This star would provide the right amount of light and heat for life to exist.
Scientists have studied planets and moons in our Solar System to see if they can support life. Space 
probes have searched for traces of bacteria or other tiny living things on Mars. Some scientists are Mars has two moons. One is called Phobos and the other Deimos.
A day on Mars is 24 hours and 37 minutes - only a little bit (7) ______________ than a day on our own 
planet. A year on Mars, however, is almost twice as long, lasting 687 Earth days. This is because it 
takes a lot longer than Earth to complete its (8) ______________ around the Sun.
Until recently, scientists believed that there was no liquid water on the (9) ______________ of Mars - 
only rocks, soil dust and ice. In 2018, however, they found evidence of a lake under the planet’s south 
polar ice cap.
Humans have not yet been to Mars, but scientists have sent (10) ______________ there to help them 
research this fascinating planet. The first spacecraft to land on Mars was the Viking Landers, which 
touched down on the surface in 1976.
F. WRITING
I. Rearrange the words to make meaningful sentences.
1. They/ water and oxygen/ whether/ Mars and its moons/ there/ on/ asked/ were
___________________________________________________________________________________
2. We/ many/ how/ solar/ know/ galaxy/ systems/ don’t/ are/ in/ there/ each
___________________________________________________________________________________
3. She/ Solar System/ could/ if/ name/ her younger brother/ all planets/ in/ the/ asked
___________________________________________________________________________________
4. The professor/ on/ Solar System’s history/ the/ a/ had/ huge/ influence/ said/ Jupiter/ that
___________________________________________________________________________________
5. A space buggy/ travelling/ the surface/ a vehicle/ the moon/ is/ used for/ of/ on
___________________________________________________________________________________
6. He/ to/ asked/ planet/ travel/ more easily/ one/ humans/ be/ from/ would/ when/ to/ able/ 
another
___________________________________________________________________________________
7. There/ is/ a field of/ circling/ Saturn/ appears as rings/ ice and rock debris/ that
___________________________________________________________________________________
8. Scientists/ moons,/ have/ any/ doesn’t/ Venus/ they/ sure/ aren’t/ why/ say/ that/ and
___________________________________________________________________________________
II. Complete the second sentences so that it has a similar meaning to the first one. B: We’d like some beef, some potatoes, some spaghetti, and an omelette. 
3. A: What did you buy at the corner shop yesterday? 
B: I bought a T-shirt, a jumper, a dress, and a hat. 
4. A: What sports do you like? 
B: I like football, tennis, fishing, and jogging. 
5. A: What fruits do you have today? 
B: We’ve got apples, pears, bananas, and oranges.
B. Vocabulary & Grammar
I. Rearrange the letters to name the following pictures.
1. racetr 2. lagxay 3. elosepcet
_________________ _________________ _________________
4. cetork 5. diliuq 6. slaeni
_________________ _________________ _________________
II. Use the words in I to complete the following sentences.
1. The _____________ looked scary; they were green, and had long legs, huge heads, and big eyes. 
2. There are a lot of solar systems in a _____________. 
3. Ash began to erupt from the _____________ in the mountain. 
4. The scientist was looking at the stars through a _____________. 
5. They launched the _____________ into space in March 1980. 
6. _____________ water is one of the things that a planet needs to support life on it.
III. Choose the correct words to complete the following sentences.