Tiêu đề 12. UNIT 12. LIFE ON OTHER PLANETS-HS.docx ✅

2. Does _____________ water really exist beneath the ice cap at the southern pole of Mars? 3. Earth appears to be the only planet in the solar system with living _____________. 4. The _____________ observes the universe in infrared light, which is invisible to the human eye. 5. _____________ is what holds the planets in orbit around the sun and what keeps the moon in orbit around Earth. 6. The discovery of _____________ could help scientists find out whether some form of life existed on Mars. 7. Some people think that _____________ exist in the Solar System and throughout the universe. 8. A _____________ is any object flying in the sky which cannot be identified by the person who sees it. 9. Our Sun is just one star among the hundreds of billions of stars in our Milky Way _____________. 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 6. The _______ is the centre of the Solar System, making up around 99.86% of its mass. A. Earth B. Sun C. Moon D. Mars 7. A _______ is an object in space that orbits or circles around a bigger object. A. comet B. meteor C. planet D. satellite 8. Astronauts can’t breathe in _______ outer space, so they have to wear a spacesuit with an oxygen tank. A. weightless B. thoughtless C. powerless D. airless 9. Ail of the planets in our Solar System, except for _______, were named after Greek and Roman gods. A. Neptune B. Jupiter C. Earth D. Venus 10. If we don’t take _______ care of planet Earth, it mightn’t be able to support human life someday. A. appropriate B. essential C. special D. voluntary IV. Supply the correct form of the word in brackets. 1. Is the asteroid 16 Psyche a ____________ target for mining? (promise) 2. Lack of oxygen is the biggest reason why Mars would be an ____________ place for human beings. (appropriate) 3. Only planets within the liquid-water ____________ zone can support life on their surfaces. (habitat) 4. They chose two of their most ____________ astronauts for the latest mission to the International Space Station. (experience) 5. Scientists are searching a planet that can provide the humans with minimal ____________ and amenities. (accommodate) 6. Huge storms always occur on Jupiter; therefore, this planet is said to be a ____________ planet. (storm)
7. The word UFO is an abbreviation which comes from the initial letters of the words ____________ ‘flying object’. (identify) 8. At the end of the film, David lost control of the spaceship and it started to spin ____________. (control) 9. With help from advanced technology, could the moon develop and maintain a ____________ atmosphere? (breathe) 10. Within our own galaxy there are probably tens of thousands of systems. (planet) 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