K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

17 tháng 5 2022

The sphere of the Earth is always half illuminated by the Sun, so day and night are born, because the Earth rotates on its axis, in turn, every part of the Earth's surface is illuminated by the sun.

17 tháng 5 2022

Day and night are due to the Earth rotating on its axis

18 tháng 5 2022

In fact, its atmosphere helps protect Earth from the Sun's harsh rays and reduces extreme temperatures, acting like a blanket wrapped around the planet.

18 tháng 5 2022

Why does the earth have an atmosphere?

- Tại sao trái đất có bầu khí quyển?

REFER:In fact, its atmosphere helps to protect Earth from the Sun's harsh rays and reduces temperature extremes, acting like a blanket wrapped around the planet. (Thực tế, bầu khí quyển của giúp bảo vệ Trái Đất khỏi những tia nắng gay gắt của Mặt Trời và làm giảm sự khắc nghiệt của nhiệt độ, hoạt động giống như một chiếc chăn được quấn quanh hành tinh.)

Read and listen to the fact sheet again. Answer the questions.  1. What is true about the amount of water on Earth?2. Why does water vapour condense?3. What happens to a glass of water on a hot day?4. Name two forms of precipitation. Do you know any more?5. What are the three states that water can be in?                                        THE WATER CYCLENow here is a challenge for you. Go and get a glass of water and take a look at it. Can you guess how old it is? Well, your water perhaps...
Đọc tiếp

Read and listen to the fact sheet again. Answer the questions.

  

1. What is true about the amount of water on Earth?

2. Why does water vapour condense?

3. What happens to a glass of water on a hot day?

4. Name two forms of precipitation. Do you know any more?

5. What are the three states that water can be in?

                                        THE WATER CYCLE

Now here is a challenge for you. Go and get a glass of water and take a look at it. Can you guess how old it is? Well, your water perhaps fell from a cloud just a couple of weeks ago, but it has been around for the same length of time as planet Earth! That means that your glass of water was around when the first creatures swam in the sea and when the dinosaurs roamed the Earth. But how is this possible?

The fact is that the quantity of water on the Earth remains the same over time and it constantly goes through the water cycle. In the cycle, there is continuous movement of water on, above and below the surface of the Earth. Firstly, the sun heats the water in the rivers, seas and oceans, and it evaporates into the air. Plants and trees lose water, too, and this also goes up into the air. The water vapour then cools and condenses into small drops which form clouds. You can see how condensation happens if you look again at your glass of water on a hot day. After a short time, water from the air condenses onto the cold glass. Back to the sky, though, and the next step is that the clouds gradually get heavier and heavier until they can’t hold the water any more, and it falls to Earth as rain, sleet or snow.

Water can change state from liquid to vapour to solid during the cycle, but any form of water that falls from the clouds is called precipitation. When on Earth, some of the water runs into rivers, lakes and streams and becomes surface water. Some enters the ground and forms underground rivers or lakes before eventually flowing back to the seas and oceans. The cycle is complete.

1
21 tháng 8 2023

1. The amount of water on Earth doesn’t change over time.

2. Water vapour condenses when it cools.

3. After a short time, water from the air condenses onto the cold glass.

4. Name two forms of precipitation: rain, snow. I know some other types of precipitates which are: hail, ice crystal and drizzle. 

5. The three states that water can be in are: solid (ice), liquid (water), gas (steam / vapour).

Read the text again and answer the following questions.1. What are humans still wondering nowadays?2. Why does a habitable planet need to have the correct amount of air?3. What happens if a planet is too small?4. How long does a day on Mars last?5. Why can we not live on Mars? THE TEXT:Nowadays humans are still wondering what planets in outer space might support life.Scientists say planets need to meet three main conditions to support life. Firstly, they must have liquid water, so their...
Đọc tiếp

Read the text again and answer the following questions.

1. What are humans still wondering nowadays?

2. Why does a habitable planet need to have the correct amount of air?

3. What happens if a planet is too small?

4. How long does a day on Mars last?

5. Why can we not live on Mars?

 

THE TEXT:

Nowadays humans are still wondering what planets in outer space might support life.

Scientists say planets need to meet three main conditions to support life. Firstly, they must have liquid water, so their temperature must not be too high or too low. Secondly, the planets need to have the correct amount of air so that they can hold an atmosphere around. Finally, their size is also important. If a planet is too small, its gravity is not strong enough to hold an enough amount of air. If it is too big, its gravity will be so strong that it will hold too much air.

Scientists are using space telescopes to find habitable planets. According to them, Mars is one of the most promising planets for life in our solar system. It is a planet like Earth. Its days last for 24.5 hours and its seasons are similar to Earth's. Although scientists have not found actual water on Mars, there seems to be traces of it on the planet's surface. However, the climate on Mars is unsuitable for human life because it is too cold and Mars lacks oxygen to support human life.

 

1
19 tháng 8 2023

1. They are still wondering what planets in outer space might support life.

2. It needs to have the correct amount of air to hold an atmosphere around it.

3. Its gravity is not strong enough to hold an enough amount of air.

4. Its day lasts for 24.5 hours.

5. Because it is too cold and lacks oxygen.

7 tháng 12 2018

Because it is a big and happy meal of the day.

Lan has three meals a day: breakfast, lunch and dinner. She usually has breakfast at home. She has bread, eggs and milk for breakfast. At school, Lan and her friends have lunch at half past eleven. They often have fish or meat and vegetables for lunch. Lan has dinner with her parents at home at seven o'clock. They often have meat, fish or chicken and vegetables for dinner. After dinner, they eat some fruit and drink tea. Lan likes dinner because it is a big and happy meal of the day. 1. How...
Đọc tiếp

Lan has three meals a day: breakfast, lunch and dinner. She usually has breakfast at home. She has bread, eggs and milk for breakfast. At school, Lan and her friends have lunch at half past eleven. They often have fish or meat and vegetables for lunch. Lan has dinner with her parents at home at seven o'clock. They often have meat, fish or chicken and vegetables for dinner. After dinner, they eat some fruit and drink tea. Lan likes dinner because it is a big and happy meal of the day.

1. How many meals does Lan have a day?

->.................................................................................................................................................

2. Do Lan and her friends have lunch at home?

->.................................................................................................................................................

3. Who does Lan have dinner with?

->.................................................................................................................................................

4. Why does she like dinner?

->.................................................................................................................................................

2
5 tháng 11 2017

Lan has three meals a day: breakfast, lunch and dinner. She usually has breakfast at home. She has bread, eggs and milk for breakfast. At school, Lan and her friends have lunch at half past eleven. They often have fish or meat and vegetables for lunch. Lan has dinner with her parents at home at seven o'clock. They often have meat, fish or chicken and vegetables for dinner. After dinner, they eat some fruit and drink tea. Lan likes dinner because it is a big and happy meal of the day.

1. How many meals does Lan have a day?

->................(Lan) She has three meals a day..................................................................................................................................

2. Do Lan and her friends have lunch at home?

->.................No, they don't.................................................................................................................................

3. Who does Lan have dinner with?

->.....................(Lan) She has dinner with her parents.............................................................................................................................

4. Why does she like dinner?

->..................Because it is a big and happy meal of the day...............................................................................................................................

13 tháng 2 2018

1. How many meals does Lan have a day?

=> She has three meals a day

2. Do Lan and her friend have lunch at home?

=> No, they don't

3. Who does Lan have dinner with?

=> She has dinner with her parents

4. Why does she like dinner?

=> Because it is a big and happy meal of the day

1 we will go on a ................. trip to dalat a three day b three - days c three-day d three day 2 if he does not come soon , he ................ be late a has b ought to c ought d might 3 i wish i ............... on a beautiful sunny beach now . a would be lying b can be lying c can be lied d could be lying 4 in order ............... your writing , you have to read a lot and write english as much as possible a to improve b to excel c to pass d to increase 5 look at this...
Đọc tiếp

1 we will go on a ................. trip to dalat a three day b three - days c three-day d three day 2 if he does not come soon , he ................ be late a has b ought to c ought d might 3 i wish i ............... on a beautiful sunny beach now . a would be lying b can be lying c can be lied d could be lying 4 in order ............... your writing , you have to read a lot and write english as much as possible a to improve b to excel c to pass d to increase 5 look at this .................... in today ’ s edition of the vietnam news , nam a advertisement b advertising c advertise d advertment 6 after completing the basic class of computing , you can ............ a high course a come b have c attend d go 7 i wonder .................... a why he does not love his family b why does not he love his family c why does he love his family d why loves his family ? 8 the village .............. near the foot of a mountain and by a river a goes b lies c comes d stands

1
23 tháng 4 2017

1 we will go on a ................. trip to dalat

a three day b three - days c three-day d three day

2 if he does not come soon , he ................ be late

a has b ought to c ought d might

3 i wish i ............... on a beautiful sunny beach now .

a would be lying b can be lying c can be lied d could be lying

4 in order ............... your writing , you have to read a lot and write english as much as possible

a to improve b to excel c to pass d to increase

5 look at this .................... in today ’ s edition of the vietnam news , nam

a advertisement b advertising c advertise d advertment

6 after completing the basic class of computing , you can ............ a high course

a come b have c attend d go

7 i wonder ....................

a why he does not love his family

b why does not he love his family

c why does he love his family

d why loves his family ?

8 the village .............. near the foot of a mountain and by a river

a goes b lies c comes d stands

17 tháng 5 2022

The basic reason why planets orbit or orbit the sun is because the sun's gravity "holds" the planets in their orbits. Just as the moon revolves around the earth by the gravity of the earth, the earth revolves around the sun by the gravitational force of the sun.

17 tháng 5 2022

The basic reason why planets orbit or orbit the sun is because the sun's gravity "holds" the planets in their orbits. Just as the moon revolves around the earth by the gravity of the earth, the earth revolves around the sun by the gravitational force of the sun.

17 tháng 2 2020

1. Yes. Because people watch television every day, and some people watch it from morning until evening.

2. Americans watch TV about 5 hours a day.

3. Because there is a lot of violence on TV today, the programs are terrible and they don't gat any exercise.

4. It brings to we news from around the world, help we learn many useful things, espeicially children.

5. We learn about life in other countries.

28 tháng 1 2022

1. Yes. Because people watch television every day, and some people watch it from morning until evening.

2. Americans watch TV about 5 hours a day.

3. Because there is a lot of violence on TV today, the programs are terrible and they don't gat any exercise.

4. It brings to we news from around the world, help we learn many useful things, espeicially children.

5. We learn about life in other countries.