a sun flower on a planet that in 3 days the flower grow 2cmhow hot is this planet star?how far it is?what kind it is? (there are multipule answers)

NH

Nguyễn Huỳnh Đăng

17 tháng 12 2016 - olm

a sun flower on a planet that in 3 days the flower grow 2cm

how hot is this planet star?how far it is?what kind it is?

(there are multipule answers)

#Toán lớp 9

0

NA

Nhật Anh

14 tháng 8 2020

Mercury is the smallest member of the sun's family. It is only 3.100 miles across. It is also the sun's swiftest planet. Its yearly journey round the sun is only 85 days. Mercury always keeps one side towards the sun. On this side it is always day, on the other side always night. We only see the lighted side. Mercury appears to us like a yellowish orange star. The nearest planet to the sun, it is always seen near the sun, either just before sunrise or soon after sunset. People sometimes...

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Mercury is the smallest member of the sun's family. It is only 3.100 miles across. It is also the sun's swiftest planet. Its yearly journey round the sun is only 85 days.

Mercury always keeps one side towards the sun. On this side it is always day, on the other side always night. We only see the lighted side.

Mercury appears to us like a yellowish orange star. The nearest planet to the sun, it is always seen near the sun, either just before sunrise or soon after sunset. People sometimes call mercury the morning star or evening star.

Mercury is half the size of the earth. Because it is much lighter, it has much less gravity. If you can visit Mercury in a spaceship, you will find it a strange world. Its low gravity makes you feel very light. If your weight on earth is 100 pounds, your weight on Mercury is only 27 pounds. Looking at the sun from Mercury, you can see that it's much more brilliant than it is seen from the earth. And the yellow centre of the sun appears three times bigger from Mercury.

On its lighted side, Mercury's temperature is about 300 degrees centigrate. But the dark side is extremely cold, but 150 degrees below zero so mercury is probably the coldest as well as the hottest of the planets.

21. A. Mercury is .......

A. the sun's fastest planet B. the coldest planet

C. the hottest planet D. all are correct

22. We cannot see the dark side of Mercury because .......

A. it moves very fast.

B. it always appears just before sunrise or soon after sunset.

C. it always keeps one side towards the sun.

D. it is too far for us to see.

23. When can we see Mercury? - We can see it ......

A. just before the sunset

B. just before sunrise

C. after the sunset

D. both A and C are correct

24. Why do we weigh much on the earth than on Mercury? - Because .......

A. Mercury is nearer to the sun. B. Mercury has got less gravity than the earth.

C. Mercury is much hotter. D. none are correct.

25. Why does the sun look bigger when it is seen from Mercury?

- Because .......

A. Mercury is the smallest planet of the sun.

B. Mercury is nearer to the sun.

C. Mercury is a light planet.

D. It only takes Mercury 88 days to move round the sun.

Chọn đáp án và giải thích chi tiết

#Tiếng anh lớp 12

1

HT

Hoàng Tử Hà

14 tháng 8 2020

1/ swift= fast=> A

2/ Mercury always keeps one side towards the sun=> C

3/ The nearest planet to the sun, it is always seen near the sun, either just before sunrise or soon after sunset => B

4/ Because it is much lighter, it has much less gravity. => B

5/ B bởi gần thì nhìn mới to chứ :v

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LT

LInh Thuy

10 tháng 4 2019

IV. Read the passage and choose the correct answer (A, B, C or D). Earth, our beautiful home planet, is the only astronomical object to accommodate life (23) . . . . . we know it. Scientists believe Earth was (24) . . . . . approximately 4.5 billion years ago. It is the fifth-largest (25) . . . . . in our solar system. Its equatorial diameter is about 12,074 kilometres. Earth is the third-closest planet to the sun. The distance from Earth to the sun is roughly 149,600,000 kilometres. It (26) ....

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#Tiếng anh thí điểm lớp 9

1

N

Nguyen

10 tháng 4 2019

IV. Read the passage and choose the correct answer (A, B, C or D).

Earth, our beautiful home planet, is the only astronomical object to accommodate life (23) . . . . . we know it. Scientists believe Earth was (24) . . . . . approximately 4.5 billion years ago. It is the fifth-largest (25) . . . . . in our solar system. Its equatorial diameter is about 12,074 kilometres. Earth is the third-closest planet to the sun. The distance from Earth to the sun is roughly 149,600,000 kilometres. It (26) . . . . 365,3 days for Earth to orbit the sun, and 24 hours to rotate on its axis. The surface temperature ranges from -88 to 580C. Nearly 70 percent of Earth's surface is covered by ocean, (27) . . . . has an average depth of about 4 kilometres. In 2015 it was estimated that 7,3 billion humans are living on Earth.

23. A. as B. so C. because D. that

24. A. find B. formed C. found D. built

25. A. system B. planet C. star D. sun

26. A. has B. takes C. gets D. begins

27. A. what B. that C. which D. where

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TV

Thanh Vi

16 tháng 2 2019

VI.Read the passage carefully, tlien decide whot hen the following,statement are true T) or false (F) There are nine planets in our solar system. These planets each have their atmosphere and environmental conditions. Scientists have been trying to research other planets to see if it is possible for life to exist on the other eight own bodies in space. Mercury and Pluto are probably the most difficult to research because of their position in the solar system. Mercury is so close to the sun...

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#Tiếng anh lớp 9

1

VN

Vũ Như Quỳnh

16 tháng 2 2019

VI.Read the passage carefully, tlien decide whot hen the following,statement are true T) or false (F)
There are nine planets in our solar system. These planets each have their atmosphere and environmental conditions. Scientists have been trying to research other planets to see if it is possible for life to exist on the other eight own bodies in space.
Mercury and Pluto are probably the most difficult to research because of their position in the solar system. Mercury is so close to the sun that with our current technology a space shuttle would burn up before it even reached its atmosphere. Pluto is so far away that some scientists believe that it may not even be a planot but a large asteroid or comet. A space shuttle can not trave that far away because it is so far away from the sun that it would freeze.
Many scientists also believe that our solar system is not alone in the uni- with us. It is difficult to know if there is life present elaewhere in the universe. for many years to come. yerse. Many believe there are several other systems that share the uhiverse .The universe is a complex structure of space that may continue to be a mysterey for many years to come
32. There are nine planets in our solar system, besides Earth. T
33. It is difficult to study the planet Mercury because it is very close to the sun.T
34. We don't know much about Pluto even though we can see it up close F
35. Pluto may not be a planet, according to some scientists. T
36. Scientists have got enough information about the universe F

#Yumi

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ML

Minh Lệ

19 tháng 8 2023

1. Choose a planet in our solar system that you like and search for the information about it.2. Design a poster about that planet, including: - The planet’s name: What does its name mean?- Size: How big is it?- Atmosphere: What is its atmosphere like? Is it a thick or a thin atmosphere?- Temperature: What is its average temperature? How hot and cold does it get?- Appearance: What does it look like?- Something special: Is there anything special about it?3. Present your poster to the...

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#Tiếng anh lớp 8

1

NV

Nguyễn Việt Dũng

CTVVIP

19 tháng 8 2023

Tham khảo
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Hello everyone, today I will talk about Mars, the 4^th planet in our solar system. The name of Mars originally comes from the name of the Roman god of war and agriculture. It may not seem like these two things go together, but they do. Mars protected those who fought for their communities and stayed home to raise crops for food. Mars has two natural satellites, and their names are Phobos and Deimos. With a radius of 2,106 miles (3,390 kilometers), Mars is about half the size of Earth. The atmosphere of Mars is much thinner than Earth's. It contains more than 95% carbon dioxide and much less than 1% oxygen. Mar's temperatures are from -151°C to 20°C. Mars is colder than Earth. If you were to stand on the surface of Mars on the equator at noon, it would feel like spring at your feet and winter at your head. Mar's surface is rocky, with canyons, volcanoes, dry lake beds and craters all over it. It's called Red Planet because iron minerals in the Martian soil oxidize, or rust, causing the soil and atmosphere to look red. One day on Mars takes a little over 24 hours. Mars makes a complete orbit around the Sun in 687 days. Thanks for listening.

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D

Dangthybgggg

1 tháng 7 2018

There four...... in a year. They are spring , summer , fall and.... in the spring the..... is usually warm. Sometimes, it is cold, but not very cold. There are many flowersin the ....... . After the spring come the....... . In the summer, the days are...., and the nighs are short. We often go.... in the summer because it is very hot. The fall is the season of fruits. We can like different kind of fruits in our ..... and in other countries. In the witer it is usually very..... . The days are...

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#Tiếng anh thí điểm lớp 6

1

VN

Vũ Như Quỳnh

1 tháng 7 2018

There four seasons in a year. They are spring , summer , fall and winter . in the spring the.weather is usually warm. Sometimes, it is cold, but not very cold. There are many flowers in the spring . After the spring come the. summer . In the summer, the days are long and the nighs are short. We often go swimming in the summer because it is very hot. The fall is the season of fruits. We can like different kind of fruits in our country and in other countries. In the witer it is usually very.cold . The days are short and the night are long

What is the weather like in the spring?

=> in the spring the.weather is usually warm. Sometimes, it is cold, but not very cold

Is it very cold in the spring?

=> No , it isn't

In which season are there many flowers?

=> In the spring

How are the days in the summer?

=> In the summer, the days are long and the nighs are short.

Do we often go fishing in the summer?

=> No , we don't

Are there many fruits in the fall?

=> Yes , there are

How are the days in the witer?

=> The days are short and the nights are long

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LQ

Lê Quỳnh Anh

2 tháng 7 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. Life in the Universe Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.What sorts of planets...

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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

Life in the Universe

Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists likely to agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble the continuous movement ands transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and burn out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problems. First of all, planets is their habitable zones will be so close to the stars that they will be “tidally blocked”- that is one side of the planet will always face the star in perpetual daylight with the other side in perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem.
Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two.
Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas gains, such as Saturn and Jupiter, in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

It can be inferred from the paragraph 3 that ______.

A. the Earth is in the sun’s habitable zone

B. the Earth is tidally locked to the sun.

C. the sun varies in its luminosity.

D. variations in luminosity help life to develop

#Mẫu giáo

1

DH

Dương Hoàn Anh

2 tháng 7 2019

Đáp án A

Có thể được suy ra từ đoạn 3 rằng ______.

A. Trái đất nằm trong vùng có thể sinh sống của mặt trời.

B. Trái đất bị khóa chặt với mặt trời.

C. Mặt trời thay đổi theo độ sáng.

D. Sự biến đổi trong độ sáng giúp sự sống phát triển.

Được suy ra từ 2 câu đầu- đoạn 3: “The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years” – (Vùng có sự sống là khu vực xung quanh một ngôi sao nơi mà các hành tinh có thể phát triển sự sống. Đảm đương nhu cầu về chất lỏng chảy trên bề mặt, nó cho phép rằng hầu hết những ngôi sao có kích cỡ tương đương với mặt trời của chúng ta có thể duy trì vùng có sự sống qua hành tỉ năm) => Trái đất có sự sống là do nó nằm trong “habitable zones” của Mặt trời, mà “habitable zones” đó được Mặt trời duy trì qua hàng tỉ năm

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LQ

Lê Quỳnh Anh

7 tháng 7 2017

Read the passage and mark A, B, C or D to indicate the correct answer to each of the questions. Jupiter is the largest and most massive planet and is fifth in order of distance from the sun. It is well placed for observation for several months in every year and on average is the brightest of the planets apart from Venus, though for relatively brief periods Mars may outshine it. Jupiter’s less than 10 hour rotation period gives it the shortest day in the solar system in so far as the principal...

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