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16 tháng 10 2023

1. Mercury
2. Venus
3. Earth
4. Mars
5. Jupiter
6. Saturn
7. Uranus

VI. Read the text and classify the following statements. There are eight other planets that travel around the sun. These planets, in order, include Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Earth is located between Venus and Mars. The path the planets use when traveling around the sun is oval-shaped and is called its orbit. Each of the planets in the solar system take a different amount of time to orbit the Sun.Earth takes 365 days or one year to orbit the Sun. The...
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VI. Read the text and classify the following statements.

There are eight other planets that travel around the sun. These planets, in order, include Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Earth is located between Venus and Mars. The path the planets use when traveling around the sun is oval-shaped and is called its orbit. Each of the planets in the solar system take a different amount of time to orbit the Sun.

Earth takes 365 days or one year to orbit the Sun. The other planets take more or less time to orbit the Sun. It takes Mercury 88 days to travel around the Sun, which is the shortest orbit time compared to other planets. The planet taking the longest time to go around the Sun is Neptune. It takes Neptune almost 165 years to travel around the Sun.

Normally, planets located closer to the sun are hotter than planets farther away. Mercury is the planet nearest the sun, and it can have a temperature of 427°C– much hotter than an oven. Venus is not the planet nearest the sun, but it is the hottest, because it has thick clouds. These clouds let the sun’s heat in, but do not let it out. The temperature on Venus can be 460°C.

The four inner planets, Mercury, Venus, Earth, and Mars are made of rock containing many different minerals. The four outer planets, Jupiter, Saturn, Uranus, and Neptune are mostly made up of different gases. Jupiter is made mainly of helium, hydrogen, and water. The four outer planets also have rings that encircle them, with Saturn having the most rings.

Other objects in space include the moons of these six planets. A moon is a celestial object (object in space) that orbits another body in space. There are approximately 173 moons throughout the solar system. Earth has a single moon, Mercury and Venus have none, and the planet with the most moons is Jupiter with 63. Not far behind Jupiter is Saturn with 62 moons.Mars has 2 moons named Phobos and Deimos.

Classify the following statements (1-12) as they relate to the given planets. Write the names of the planet next to the statements.

Mercury

Earth

Jupiter

Uranus

Venus

Mars

Saturn

Neptune

1.    It is the farthest planet from the Sun. ………………..                               

2.    It is the hottest planet. ………………..

3.    It takes the shortest time to orbit the Sun. ………………..

4.    It takes the longest time to go around the Sun. ………………..

5.    The temperature on its surface is about 427°C. ………………..

6.    It has the most rings. ………………..

7.    It has only one moon. ………………..

8.    It has 63 moons. ………………..

9.    It has 62 moons. ………………..

10.  It is located between Venus and Mars. ………………..

11.  It has two moons known as Deimos and Phobos. ………………..

12.  It is made mainly of helium, hydrogen, and water. ………………..

0
Read the dialogue and then decide whether the statements that follow are true or false. Write True or False in your answersheet: A planet is a body in space that revolves around a star. There are nine planets in our solar system, and these nine planets travel around the sun. The names of the planets are Mercury, Venus, Earth, Jupiter, Saturn, Uranus, Neptune, and Pluto. Planets travel in orbits around their stars . All of the planets of the solar system revolve in elliptical orbits. In...
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Read the dialogue and then decide whether the statements that follow are true or false. Write True or False in your answersheet:

A planet is a body in space that revolves around a star. There are nine planets in our solar system, and these nine planets travel around the sun. The names of the planets are Mercury, Venus, Earth, Jupiter, Saturn, Uranus, Neptune, and Pluto. Planets travel in orbits around their stars . All of the planets of the solar system revolve in elliptical orbits. In other words, their orbits are like large, flat circles. The time that it takes a planet to make one revolution around the sun is called its year. The Greek were the first people to recognize and give names to some of the planets. The word planet comes from a Greek word meaning wanderer. If a person wanders, this means that he goes from one place to another and does not have a home. The Greek thought that the planets “wandered” in the sky. However, modern scientists can predict the movement of the planets very accurately

____ 1/ A planet revolves around the Earth.

____2/ Venus, Mars and Neptune are planets and stars.

____ 3/ The Greek were the first to recognize some of the planets.

____ 4/ The planets in our solar system travel around the sun and in elliptical orbits

1
14 tháng 12 2017

__TRUE__ 1/ A planet revolves around the Earth.

__TRUE__2/ Venus, Mars and Neptune are planets and stars.

__TRUE__ 3/ The Greek were the first to recognize some of the planets.

__TRUE__ 4/ The planets in our solar system travel around the sun and in elliptical orbits .

Sao đúng hết vậy ta ( có thể câu 2 là FALSE nhé bạn ) tớ học Anh Văn cũng không tốt lắm đâu . Đúng thì like cho tớ vui vưới nhé !

26 tháng 10 2018

đề bài sai à bạn :v

4 tháng 11 2018

à ừ xin lỗi mình đăng thiếu đề !!

24 tháng 3 2021

1. It is a gas giant Jupiter.

2. Clouds are made of methane, hydrogen, and helium.

3. Saturn is the least dense planet in our solar system and is made mostly of hydrogen and helium.

4. Because it is so lightweight and spins so quickly.

5. Saturn is surrounded by thousands of small rings made of rocks and rice.

31 tháng 12 2021

1 It is a gas giant like Jupiter.

2 Clouds are made of methane, hydrogen, and helium.

3 Saturn is the least dense planet in our solar system and is made mostly of hydrogen and helium.

4 Because it is so lightweight and spins so quickly.

5 Saturn is surrounded by thousands of small rings made of rocks and rice.

(11-12) Choose the underlined word or phrase(A,B,C, or D) that needs correcting: 11/ They saw an UFO at about ten o’clock last night. A B C D 12/ If there were flying saucers, there will be traces of their landing. A B C D Answer: 11/ _____ 12/ _____ (13-16) Use the correct tense or form of the verbs in parentheses. 13/ He used to __________ to the movies with me. ( go) 14/ They ____________ here yesterday. ( not come) 15/ She wishes she __________ to America next year. (...
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(11-12) Choose the underlined word or phrase(A,B,C, or D) that needs correcting:

11/ They saw an UFO at about ten o’clock last night.

A B C D

12/ If there were flying saucers, there will be traces of their landing.

A B C D

Answer:

11/ _____ 12/ _____

(13-16) Use the correct tense or form of the verbs in parentheses.

13/ He used to __________ to the movies with me. ( go)

14/ They ____________ here yesterday. ( not come)

15/ She wishes she __________ to America next year. ( go)

16/ You must study hard if you ___________ to pass the final exam. (want)

Answer:

1/ _____ 2/ _____ 3/ _____ 4/ _____

17-22) Use the correct form of the words in parentheses:

17/ I think UFOs might be the ___________ of people. ( imagine)

18/ There is no __________ that they have been there. ( evident)

19/ There may be a lot of __________ stones in Mars. ( preciosity)

20/ Many reports talked a lot about the __________ of UFOs . ( appear)

21/ It was a really _________ football match. (excite)

22/ You have had to make a difficult _________ . ( decide)

Answer:

1/ _____ 2/ _____ 3/ _____ 4/ _____ 5/ _____ 6/ _____

(23-28) Choose the word or phrase that best fits the blank space in the following passage:

On October 21, 1978, Australian pilot Frederick Valentich, age 20, took off from Melbourne and (23)__________ towards a small island. It was the young men’s first solo night over water. It was a still, clear evening, and from his Cessna aircraft Valentich had a perfect (24) _________ of the sky above and the sea below. Shortly after taking off, Valentich reported to flight controllers in Melbourne that he was being followed by a UFO. “ It’s a long shape,” he reported, “ with a green light, sort of metallic like, all shiny on the outside”. A few minutes later, he told the controllers, “ That strange aircraft is hovering on top of me again.” After that Valentich stopped talking. For the next fourteen seconds the traffic controllers heard a strange ringing sound. Then silence. Valentich and his plane never reached the island, and no (25) __________ of him or his aircraft was ever found. Several (26) __________ of the public report seeing strange phenomena in the sky over Melbourne that night. An amateur photographer produced a photo of (27) __________ looked like a large object surrounded by vapor. A NASA scientist, Richard Haines, heard about the story and began an (28) __________. He analyzed Valentich’s voice on tape and the strange sound heard at the end of the tape. But he concluded that it was “ unidentifiable.” He decided that there were four possible explanations for the mystery surroundings Valentich disappearance: (1) Valentich might have become confused and disoriented while flying his plane and finally crashed; (2) He could have staged a deliberate hoax;(3) he could have been the victim of a top secret advanced weapons ĐỀ THI THỬ MÔN ANH VÀO LỚP 10 SỐ ; or he may have benn captured by the occupants of a OFO.

23/ A. headed B. pointed C. directed D. guided

24/ A. sight B. look C. view D. spectacle

25/ A. mark B. trace C. trail D. lead

26/ A. members B. beings C. sessions D. units

27/ A. that B. which C. such D. what

28/ A. identification B. investigation C. interrogation D. introspection

Answer:

1/ _____ 2/ _____ 3/ _____ 4/ _____ 5/ _____ 6/ _____

(29-32) Read the dialogue and then decide whether the statements that follow are true or false. Write True or False in your answersheet:

A planet is a body in space that revolves around a star. There are nine planets in our solar system, and these nine planets travel around the sun. The names of the planets are Mercury, Venus, Earth, Jupiter, Saturn, Uranus, Neptune, and Pluto. Planets travel in orbits around their stars . All of the planets of the solar system revolve in elliptical orbits. In other words, their orbits are like large, flat circles. The time that it takes a planet to make one revolution around the sun is called its year. The Greek were the first people to recognize and give names to some of the planets. The word planet comes from a Greek word meaning wanderer. If a person wanders, this means that he goes from one place to another and does not have a home. The Greek thought that the planets “wandered” in the sky. However, modern scientists can predict the movement of the planets very accurately

____ 29/ A planet revolves around the Earth.

____30/ Venus, Mars and Neptune are planets and stars.

____ 31/ The Greek were the first to recognize some of the planets.

____ 32/ The planets in our solar system travel around the sun and in elliptical orbits

(33-36) Rewrite the sentences so that they are nearest in meaning to the sentence

printed before them.

33/ It’s possible that it’s correct.

That __________________________________________________

34/ It’s possible to travel to Russia without a visa.

You can’t travel to Russia if____________­­­­­­­­­______________________________

35/ I wasn’t able to phone her because I didn’t know her phone number.

If ____________________________________________________

36/ You don’t do any exercise and that’s why you put on weight.

If _____________________________________________________

0
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that best fits each of the numbered blanks. The Planets of Jupiter  The largest of the giant gas planets, Jupiter, with a volume 1,300 times greater than Earth’s, contains more than twice the mass of all the other planets combined. It is thought to be a gaseous and fluid planet without solid surfaces, Had it been somewhat more massive, Jupiter might have attained internal...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that best fits each of the numbered blanks.

The Planets of Jupiter

 The largest of the giant gas planets, Jupiter, with a volume 1,300 times greater than Earth’s, contains more than twice the mass of all the other planets combined. It is thought to be a gaseous and fluid planet without solid surfaces, Had it been somewhat more massive, Jupiter might have attained internal temperatures as high as the ignition point for nuclear reactions, and it would have flamed as a star in its own right. Jupiter and the other giant planets are of a low-density type quite distinct from the terrestrial planets: they are composed predominantly of such substances as hydrogen, helium, ammonia, and methane, unlike terrestrial planets. Much of Jupiter’s interior might be in the form of liquid, metallic hydrogen, Normally, hydrogen is a gas, but under pressures of millions of kilograms per square centimeter, which exist in the deep interior of Jupiter, the hydrogen atoms might lock together to form a liquid with the properties of a metal. Some scientists believe that the innermost core of Jupiter might be rocky, or metallic like the core of Earth.

 Jupiter rotates very fast, once every 9.8 hours. As a result, its clouds, which are composed largely of frozen and liquid ammonia, have been whipped into alternating dark and bright bands that circle the planet at different speeds in different latitudes. Jupiter’s puzzling Great Red Spot changes size as it hovers in the Southern Hemisphere. Scientists speculate it might be a gigantic hurricane, which because of its large size (the Earth could easily fit inside it), lasts for hundreds of years.

     Jupiter gives off twice as much heat as it receives from the Sun. Perhaps this is primeval heat or beat generated by the continued gravitational contraction of the planet. Another star like characteristic of Jupiter is its sixteen natural satellites, which, like a miniature model of the Solar System, decrease in density with distance from rocky moons close to Jupiter to icy moons farther away. If Jupiter were about 70 times more massive, it would have become a star, Jupiter is the best-preserved sample of the early solar nebula, and with its satellites, might contain the most important clues about the origin of the Solar System.

According to the passage, some scientists believe Jupiter and Earth are similar in that they both have__________.

A. solid surfaces      

B. similar masses           

C. similar atmospheres 

D. metallic cores

1
5 tháng 6 2017

Đáp án D

1-10) Choose the word or phrase that best fits the blank space in each sentence: 1/ The story about UFOs caught the ___________ of the whole class . A. decision B. imagination C. evidence D. science 2/ There’s no _____________ that life exists on other planets. A. creature B. experience C. evidence D. condition 3/ The satellite moves around the earth’s _________ round the sun. A. surface B. path C. space D. orbit 4/ My grandfather is keen __________ growing fruit trees. A. of...
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1-10) Choose the word or phrase that best fits the blank space in each sentence:

1/ The story about UFOs caught the ___________ of the whole class .

A. decision B. imagination C. evidence D. science

2/ There’s no _____________ that life exists on other planets.

A. creature B. experience C. evidence D. condition

3/ The satellite moves around the earth’s _________ round the sun.

A. surface B. path C. space D. orbit

4/ My grandfather is keen __________ growing fruit trees.

A. of B. in C. on D. for

5/ Articles and reports in newspapers talk lots about UFO _____________ .

A. shapes B. balloons C. appearance D. exposition

6/ People are talking about the __________ circles on the fields in The Great Britain.

A. secret B. mysterious C. marvelous D. excellent

7/ UFO’s mean ___________ flying objects.

A. unsafe B. unknown C. unable D. unidentified

8/ Some scientists and government want to send ___________ to Mars.

A. pilots B. aliens C. astronauts D. students

9/ What scenes on the earth can you see from __________ space.

A. out B. outer C. upper D. inner

10/ I think UFOs exist only in films for ___________ .

A. imagination B. persuasion C. entertainment D. introduction

Use the correct form of the words in parentheses:

17/ I think UFOs might be the ___________ of people. ( imagine)

18/ There is no __________ that they have been there. ( evident)

19/ There may be a lot of __________ stones in Mars. ( preciosity)

20/ Many reports talked a lot about the __________ of UFOs . ( appear)

21/ It was a really _________ football match. (excite)

22/ You have had to make a difficult _________ . ( decide)

(23-28) Choose the word or phrase that best fits the blank space in the following passage:

On October 21, 1978, Australian pilot Frederick Valentich, age 20, took off from Melbourne and (23)__________ towards a small island. It was the young men’s first solo night over water. It was a still, clear evening, and from his Cessna aircraft Valentich had a perfect (24) _________ of the sky above and the sea below. Shortly after taking off, Valentich reported to flight controllers in Melbourne that he was being followed by a UFO. “ It’s a long shape,” he reported, “ with a green light, sort of metallic like, all shiny on the outside”. A few minutes later, he told the controllers, “ That strange aircraft is hovering on top of me again.” After that Valentich stopped talking. For the next fourteen seconds the traffic controllers heard a strange ringing sound. Then silence. Valentich and his plane never reached the island, and no (25) __________ of him or his aircraft was ever found. Several (26) __________ of the public report seeing strange phenomena in the sky over Melbourne that night. An amateur photographer produced a photo of (27) __________ looked like a large object surrounded by vapor. A NASA scientist, Richard Haines, heard about the story and began an (28) __________. He analyzed Valentich’s voice on tape and the strange sound heard at the end of the tape. But he concluded that it was “ unidentifiable.” He decided that there were four possible explanations for the mystery surroundings Valentich disappearance: (1) Valentich might have become confused and disoriented while flying his plane and finally crashed; (2) He could have staged a deliberate hoax;(3) he could have been the victim of a top secret advanced weapons test; or he may have benn captured by the occupants of a OFO.

23/ A. headed B. pointed C. directed D. guided

24/ A. sight B. look C. view D. spectacle

25/ A. mark B. trace C. trail D. lead

26/ A. members B. beings C. sessions D. units

27/ A. that B. which C. such D. what

28/ A. identification B. investigation C. interrogation D. introspection

(29-32) Read the dialogue and then decide whether the statements that follow are true or false. Write True or False in your answersheet:

A planet is a body in space that revolves around a star. There are nine planets in our solar system, and these nine planets travel around the sun. The names of the planets are Mercury, Venus, Earth, Jupiter, Saturn, Uranus, Neptune, and Pluto. Planets travel in orbits around their stars . All of the planets of the solar system revolve in elliptical orbits. In other words, their orbits are like large, flat circles. The time that it takes a planet to make one revolution around the sun is called its year. The Greek were the first people to recognize and give names to some of the planets. The word planet comes from a Greek word meaning wanderer. If a person wanders, this means that he goes from one place to another and does not have a home. The Greek thought that the planets “wandered” in the sky. However, modern scientists can predict the movement of the planets very accurately

____ 29/ A planet revolves around the Earth.

____30/ Venus, Mars and Neptune are planets and stars.

____ 31/ The Greek were the first to recognize some of the planets.

____ 32/ The planets in our solar system travel around the sun and in elliptical orbits

(33-36) Rewrite the sentences so that they are nearest in meaning to the sentence

printed before them.

33/ My cousin will meet you at the station.

 You __________________________________________________

34/ It’s possible to travel to Russia without a visa.

You can’t travel to Russia if____________­­­­­­­­­______________________________

35/ The police said : “ Don’t touch anything in this room, everybody. ”

 ____________________________________________________

36/ You don’t do any exercise and that’s why you put on weight.

If _____________________________________________________

4
14 tháng 12 2017

1-10) Choose the word or phrase that best fits the blank space in each sentence:

1/ The story about UFOs caught the ___________ of the whole class .

A. decision B. imagination C. evidence D. science

2/ There’s no _____________ that life exists on other planets.

A. creature B. experience C. evidence D. condition

3/ The satellite moves around the earth’s _________ round the sun.

A. surface B. path C. space D. orbit

4/ My grandfather is keen __________ growing fruit trees.

A. of B. in C. on D. for

5/ Articles and reports in newspapers talk lots about UFO _____________ .

A. shapes B. balloons C. appearance D. exposition

6/ People are talking about the __________ circles on the fields in The Great Britain.

A. secret B. mysterious C. marvelous D. excellent

7/ UFO’s mean ___________ flying objects.

A. unsafe B. unknown C. unable D. unidentified

8/ Some scientists and government want to send ___________ to Mars.

A. pilots B. aliens C. astronauts D. students

9/ What scenes on the earth can you see from __________ space.

A. out B. outer C. upper D. inner

10/ I think UFOs exist only in films for ___________ .

A. imagination B. persuasion C. entertainment D. introduction

14 tháng 12 2017

(23-28) Choose the word or phrase that best fits the blank space in the following passage:

On October 21, 1978, Australian pilot Frederick Valentich, age 20, took off from Melbourne and (23)__________ towards a small island. It was the young men’s first solo night over water. It was a still, clear evening, and from his Cessna aircraft Valentich had a perfect (24) _________ of the sky above and the sea below. Shortly after taking off, Valentich reported to flight controllers in Melbourne that he was being followed by a UFO. “ It’s a long shape,” he reported, “ with a green light, sort of metallic like, all shiny on the outside”. A few minutes later, he told the controllers, “ That strange aircraft is hovering on top of me again.” After that Valentich stopped talking. For the next fourteen seconds the traffic controllers heard a strange ringing sound. Then silence. Valentich and his plane never reached the island, and no (25) __________ of him or his aircraft was ever found. Several (26) __________ of the public report seeing strange phenomena in the sky over Melbourne that night. An amateur photographer produced a photo of (27) __________ looked like a large object surrounded by vapor. A NASA scientist, Richard Haines, heard about the story and began an (28) __________. He analyzed Valentich’s voice on tape and the strange sound heard at the end of the tape. But he concluded that it was “ unidentifiable.” He decided that there were four possible explanations for the mystery surroundings Valentich disappearance: (1) Valentich might have become confused and disoriented while flying his plane and finally crashed; (2) He could have staged a deliberate hoax;(3) he could have been the victim of a top secret advanced weapons test; or he may have benn captured by the occupants of a OFO.

23/ A. headed B. pointed C. directed D. guided

24/ A. sight B. look C. view D. spectacle

25/ A. mark B. trace C. trail D. lead

26/ A. members B. beings C. sessions D. units

27/ A. that B. which C. such D. what

28/ A. identification B. investigation C. interrogation D. introspection

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that best fits each of the numbered blanks. The Planets of Jupiter  The largest of the giant gas planets, Jupiter, with a volume 1,300 times greater than Earth’s, contains more than twice the mass of all the other planets combined. It is thought to be a gaseous and fluid planet without solid surfaces, Had it been somewhat more massive, Jupiter might have attained internal...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that best fits each of the numbered blanks.

The Planets of Jupiter

 The largest of the giant gas planets, Jupiter, with a volume 1,300 times greater than Earth’s, contains more than twice the mass of all the other planets combined. It is thought to be a gaseous and fluid planet without solid surfaces, Had it been somewhat more massive, Jupiter might have attained internal temperatures as high as the ignition point for nuclear reactions, and it would have flamed as a star in its own right. Jupiter and the other giant planets are of a low-density type quite distinct from the terrestrial planets: they are composed predominantly of such substances as hydrogen, helium, ammonia, and methane, unlike terrestrial planets. Much of Jupiter’s interior might be in the form of liquid, metallic hydrogen, Normally, hydrogen is a gas, but under pressures of millions of kilograms per square centimeter, which exist in the deep interior of Jupiter, the hydrogen atoms might lock together to form a liquid with the properties of a metal. Some scientists believe that the innermost core of Jupiter might be rocky, or metallic like the core of Earth.

 Jupiter rotates very fast, once every 9.8 hours. As a result, its clouds, which are composed largely of frozen and liquid ammonia, have been whipped into alternating dark and bright bands that circle the planet at different speeds in different latitudes. Jupiter’s puzzling Great Red Spot changes size as it hovers in the Southern Hemisphere. Scientists speculate it might be a gigantic hurricane, which because of its large size (the Earth could easily fit inside it), lasts for hundreds of years.

     Jupiter gives off twice as much heat as it receives from the Sun. Perhaps this is primeval heat or beat generated by the continued gravitational contraction of the planet. Another star like characteristic of Jupiter is its sixteen natural satellites, which, like a miniature model of the Solar System, decrease in density with distance from rocky moons close to Jupiter to icy moons farther away. If Jupiter were about 70 times more massive, it would have become a star, Jupiter is the best-preserved sample of the early solar nebula, and with its satellites, might contain the most important clues about the origin of the Solar System.

Which of the following statements is supported by the passage?

A. If Jupiter had fewer satellites, it would be easier for scientists to study the planet itself.

B. If Jupiter had had more mass, it would have developed internal nuclear reactions.

C. If Jupiter had been smaller, it would have become a terrestrial planet.

D. If Jupiter were larger, it would give off much less heat.

1
4 tháng 10 2019

Đáp án B

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that best fits each of the numbered blanks. The Planets of Jupiter  The largest of the giant gas planets, Jupiter, with a volume 1,300 times greater than Earth’s, contains more than twice the mass of all the other planets combined. It is thought to be a gaseous and fluid planet without solid surfaces, Had it been somewhat more massive, Jupiter might have attained internal...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that best fits each of the numbered blanks.

The Planets of Jupiter

 The largest of the giant gas planets, Jupiter, with a volume 1,300 times greater than Earth’s, contains more than twice the mass of all the other planets combined. It is thought to be a gaseous and fluid planet without solid surfaces, Had it been somewhat more massive, Jupiter might have attained internal temperatures as high as the ignition point for nuclear reactions, and it would have flamed as a star in its own right. Jupiter and the other giant planets are of a low-density type quite distinct from the terrestrial planets: they are composed predominantly of such substances as hydrogen, helium, ammonia, and methane, unlike terrestrial planets. Much of Jupiter’s interior might be in the form of liquid, metallic hydrogen, Normally, hydrogen is a gas, but under pressures of millions of kilograms per square centimeter, which exist in the deep interior of Jupiter, the hydrogen atoms might lock together to form a liquid with the properties of a metal. Some scientists believe that the innermost core of Jupiter might be rocky, or metallic like the core of Earth.

 Jupiter rotates very fast, once every 9.8 hours. As a result, its clouds, which are composed largely of frozen and liquid ammonia, have been whipped into alternating dark and bright bands that circle the planet at different speeds in different latitudes. Jupiter’s puzzling Great Red Spot changes size as it hovers in the Southern Hemisphere. Scientists speculate it might be a gigantic hurricane, which because of its large size (the Earth could easily fit inside it), lasts for hundreds of years.

     Jupiter gives off twice as much heat as it receives from the Sun. Perhaps this is primeval heat or beat generated by the continued gravitational contraction of the planet. Another star like characteristic of Jupiter is its sixteen natural satellites, which, like a miniature model of the Solar System, decrease in density with distance from rocky moons close to Jupiter to icy moons farther away. If Jupiter were about 70 times more massive, it would have become a star, Jupiter is the best-preserved sample of the early solar nebula, and with its satellites, might contain the most important clues about the origin of the Solar System.

Paragraph 3 supports which of the following conclusions?

A. Jupiter gives off twice as much heat as the Sun.

B. Jupiter has a weaker gravitational force than the other planets.

C. Scientists believe that Jupiter was once a star.

D. Scientists might learn about the beginning of the Solar System by Studying Jupiter.

1
28 tháng 5 2018

Đáp án D