1. Cấu trúc của khí quyển
Căn cứ vào các đặc điểm khác nhau của lớp vỏ khí, người ta chia khí quyển thành năm tầng :
a) Tầng đối lưu
Tầng đối lưu nằm trên bề mặt Trái Đất có chiều dày không đồng nhất: ở Xích đạo 16 km, còn ở cực chỉ khoảng 8 km. Không khí trong tầng này chuyển động chủ yếu theo chiều thẳng đứng.
Tầng đối lưu tập trung tới 80% khối lượng không khí của khí quyển, 3/4 lượng hơi nước (từ 4 trở xuống) và các phần tử tro bụi, muôi, vi sinh vật... Chúng hấp thụ một phần bức xạ mặt trời, nhờ ; mà ban ngày mặt đất đỡ nóng, ban đêm đỡ lạnh ; đồng thời còn là hạt nhân ngưng tụ để hơi nước ngưng lại xung quanh thành sương mù, mây, mưa... Các phần tử vật chất rắn này càng lên cao càng ít, cũng là nguyên nhân làm cho nhiệt độ ở tầng này giảm theo độ cao.
b) Tầng bình lưu
Tầng bình lưu, không khí khô và chuyển động thành luồng ngang, tầng này tập trung phần lớn ôdôn. nhất là ớ độ cao từ 22 - 25 km. Do tia mặt trời đốt nóng trực tiếp và ôdôn hấp thụ bức xạ mặt trời nên nhiệt độ ở tầng bình lưu tăng lên đến +10°c.
c) Tầng giữa
Tầng khí quyển giữa từ giới hạn trên của tầng bình lưu lên tới 75 - 80 km. Ở tầng này nhiệt độ giảm mạnh theo độ cao và xuống còn khoảng -70⁰C đến - 80⁰C ở đỉnh tầng.
d) Tầng ion (tầng nhiệt)
Ở đây không khí hết sức loãng, nhưng lại chứa nhiều ion là những hạt rất nhỏ mang điện tích âm hoặc dương nên có tác dụng phản hồi những sóng vô tuyến điện từ mặt đất truyền lên.
e) Tầng ngoài
Tầng khí quyển ngoài chủ yếu là khí hêli vả hiđrô, không khí ở tầng này rất loãng.

2. Các khu du lịch nổi tiếng của nước ta:

câu 3: Vì ở trên các miền vùng núi rất mát do gần ở ...

đợi mình nghĩ cái phần ...

Dear (Tên bạn của bạn),

How are you? I am in the capital of England — in London. My parents and I always dreamt about seeing this nice city.

There are a lot of beautiful old buildings. We have alredy seen Westminster Abbey, Big Ben (now it called Elizabeth’s Tower), The Houses of Parliament, Buckingham Palace, St. Paul’s Cathedral, London Bridge, The Tower of london and The Waxworks Madame Tussaunds Museum. There are the models of famous people from pop stars to prime ministers made from wax in this museum. They look real. It’s so interesting.

My parents and I are walking on Trafalgar Square now. There is Nelson’s Column in its centre which is guarded by four lion statues at its base. By the way, I sent you this postcard with a picture of Trafalgar Square.

The weather is not fine today, it’s foggy and rainy. But it doesn’t spoil our walking.

We took much photos. Next week we will be at home and I’ll show you them.

Don’t miss the chance to visit England and London.

Best wishes,

(Tên bạn)

Dear (Tên bạn của bạn),

How are you? I am in the capital of England — in London. My parents and I always dreamt about seeing this nice city.

There are a lot of beautiful old buildings. We have alredy seen Westminster Abbey, Big Ben (now it called Elizabeth’s Tower), The Houses of Parliament, Buckingham Palace, St. Paul’s Cathedral, London Bridge, The Tower of london and The Waxworks Madame Tussaunds Museum. There are the models of famous people from pop stars to prime ministers made from wax in this museum. They look real. It’s so interesting.

My parents and I are walking on Trafalgar Square now. There is Nelson’s Column in its centre which is guarded by four lion statues at its base. By the way, I sent you this postcard with a picture of Trafalgar Square.

The weather is not fine today, it’s foggy and rainy. But it doesn’t spoil our walking.

We took much photos. Next week we will be at home and I’ll show you them.

Don’t miss the chance to visit England and London.

Best wishes,

Doremon

Pokemon

Naruto Shippūden

One Piece

Thám tử lừng danh conan

Tấn công người khổng lồ (Shingeki no Kyojin)

Dragon ball

Tom and Jerry

oggy và những chú gián tinh nghịch

xem nhiều quá rồi :) ít nhất 100 bộ rồi

Doremon

Thám tử lừng danh conan

Hotarubi no morie

Koturasan

Pokemon

Một số địa danh du lịch nổi tiếng: 
Phú Quốc, Nha Trang, Sầm Sơn, Cửa Lò, Hạ Long, Đà Nẵng, Cát Bà,..
Đặt câu:
Sắp đến kì nghỉ hè rồi, em mong bố mẹ cho em được đi du lịch đến biển Cửa Lò.

Bạn tham khảo nhé:

Mùa hè năm nay thật tuyệt vời! Em đã có cơ hội trải nghiệm nhiều điều thú vị mà trước đây em chỉ thấy trong những bức tranh hay trong sách vở. Em đã đi du lịch đến nhiều nơi đẹp nhưng chưa bao giờ thấy mệt mỏi. Cảm giác hạnh phúc đang tràn ngập trong tâm hồn em: đi bộ dưới ánh nắng mặt trời, thả mình vào biển xanh mát, và thậm chí còn có cơ hội thử những món ăn độc đáo của những vùng miền mới mẻ.Em đã đắm mình trong không gian mới lạ, những người bạn mới gặp cũng làm cho chuyến đi thêm đáng nhớ. Cảm ơn cuộc sống vì đã mang đến cho em những trải nghiệm thú vị như thế này. Trái tim em đang nảy mừng vui và sẵn sàng đối mặt với mọi thử thách và khám phá tiếp theo. Chắc chắn, những kỷ niệm này sẽ mãi mãi ở trong lòng em, là nguồn động viên cho những ngày tháng phía trước!

Tick cho mình nhé 😊

Hay đấy cho 1 tick

Vì mùa hè có khí hậu nóng mà trên núi có khí hậu mát mẻ nên ở nước ta nhiều người đi nghỉ mát ở các khu du lịch thuộc vùng núi

Một số khu nghỉ mát : Sa Pa, Mẫu Sơn, Tam Đảo,....vv

ở nước ta nhiều người đi nghỉ mát ở các khu du lịch thuộc vùng núi vì các đỉnh núi cao có khí hậu mát mẻ là lựa chọn lý tưởng để nghỉ mát và thư giãn trong những ngày hè.

một số khu nghỉ mát nổi tiếng ở nước ta : Sa Pa, Tam Đảo, Mẫu Sơn, Ba Vì,.....

Lên phanxipang chơi cho zui 

Last year my mom surprised my brother and I with a train trip to the nation's capital - washington DC. We departed at night and woke up the next morning somewhere in Virginia. Looking at beautiful sight of the mountains while enjoying breakfast.

I had my 15th birthday while on this vacation and the crew said "Happy Birthday" to me every time they saw me.

My grandmother often shared stories of how she rode the rails back in the 60's as this was the most common way to travel back then. This trip gave me the opportunity to share my story with her as well. This trip brought my family closer. I will never forget it.
 

So, the summer is going to near and my family will going to Nha Trang beach. Next to five days prepare luggage, my family presented in the beach. Oh!!! the wind is cold and fanta, the beach as an endless green carpet, It is so cool. Hotels are high and beatiauful. In the afternoon, dad, me and my brother was swimming in the beach. Water beach is coldly and wonderful. In the near evening, my family been enjoying famous seafood in Nha Trang. In the night, I and my brother went to the park, my parents went in sand near the beach. Next to summer vacations, my family came to my home. But I do not forgot my summer.

Nha Trang, the capital of Khanhs Hoaf province, has one of the most popular municipal beaches in all of Vietnam. In Nha Trang, nature beauties are so tempting. Waves crashing onto the cliffs; the soft sigh of the sea breeze; clean white sands and turquoise waters; it all makes for a stunning landscapes. On my visit to Nha Trang, I used to get up early each morning to stroll along the beach 

Last year , on summer holiday , when I had just passed the entrance exam to Ha Noi University of technology , my father took me to Ho Chi Minh city for a few days . As being eager for the trip , I prepared many things such as clothes , camera ... Eventually it came . When we got on the plane , I was very glad and the flight took off pricise time . Un almost everyone who felt ill at the beginning of the flight , I felt very comfortable . When the plane was floating in the air , I looked over the windown of the plane . Oh , I saw an incredibly beautiful scene . Everything was only lights that were sparkling and subtle . Two hours and a half later , we arrived in Ho Chi Minh city . We caught a taxi to go straight to my uncle’s house which nearly the airport . Next day , we woke up early , preparing to visit the city on my uncle’s motorbike . Who didn’t know that the streets in HCM city were as crowded as in HN city and I found that everyone was in a hurry . First , we stopped at DamSen water park where I enjoyed many aqua games slipping from a whirl of water , slithering in gutter , rolling with water and so do on . After that , we had a excellent lunch there . The foods was arranged as a party with many , many dishes : grill leg of turkey , bacon , beef , big crab , lobster , salmon , tuna , etc with various drinks such as cocacola , pepsi , beer and some wine made from grapes . After a while , my belly was full but I still was eatting some dessert . There are some dessert to choose such as melon , grapes , pear . Finally , I got a cup of coffee . I was very relaxed by flourve of it . Next , we slept for a long time and then drove motorbike in the streets about nightfall .We went snowly by motorbike and there were so many fun gave me on the day . Nightlife was animate . All shop was being opened with colourful lights , many vehicles were going in the streets and some people were going on foot in pavement to the streets became bustling and clamourous . About ten o’clock , we went back home to ready for next day that is enjoyable . It’s joyful memory . Furthermore , it’s reward to me for I passed one's examination to studying at HUT so it remind me that I must try to study very well

 my summer holiday, I did not do something special and did not go somewhere special except Chamonix and Venice. Most of my holiday was showing friends of my parents and my grandparents the most important and the most beautiful places of Geneva and its surroundings.

I started the summer holiday before everyone (6 days before). That was because of my grandparents. Well, it first started off when my grand parents came. We were going by car where my grandmother wouldn't walk and I was walking with my grandfather. Because my grandfather s walking and my grandmother doesn't. Well they stayed for 1 month and went back to Turkey. The next visitors were my mother's schoolmates (can you believe it!!). They stayed one month as well. We kind of went to same places, when they were gone that was the fun. We went to Chamonix and Venice.

The best thing there was the Jacuzzi and the pool. In Chamonix, the mountains haven. The highest there was Mont-Blanc and Auguille du Midi. We climbed with a cable car; it was totally amazing and extremely cold. This point was 3842 meters high. And, of course, I should not forget Venice, it was also a haven but I didn't see much because we had small amount of time. The most amazing thing was the square of San Marco Polo and then the gondolas.

The thing I really d about my holiday was getting a brand new VW Passat and seeing my grandparents (first time in two years).

My unforgottable holiday was when I visited Jogjakarta. It was about a year ago we had a school holiday. Firstly, my best friends and I did not know where to spend our holiday. So, we tried to discuss to go some places that made us have some fun. Then, after a long discussion about the place, we all agreed to visit Jogjakarta. So, we prepared all the things that we needed for it, such as; checking our motorcycle and buying some snacks. The following day, in the sunny Sunday morning we started our trip to go to Jogjakarta. It just took about two hours from my hometown, Ngawi, by motorcycle. After two hours long driving, finally we arrived at the first destination, Borobudur temple. We were amazed with this tremendous temple. Also we wondered how come the ancient people could build this gigan temple without any modern tools. Then we climbed this temple up to the top. It was really exhausting. But when we reached the top, the scenery was incredibly magnificent. We could see Prambanan temple near Borobudur and other beautiful sceneries. Beside that, we were amazed with its carvings on the wall. My friend said that it represented the wealth of Mataram kingdom, but we could not understand it. Then we took many lovely pictures there. Next, we went to our next destination, that was Parangtritis beach. But on the way, we were lost. We did not arrive at Parangtritis beach but at another beach. We all did not know the name of this beach. We did not know either how come we arrived at this beach. We thought we were in the right direction. After exploring this beach we knew the name was Depok beach, near Parangtritis beach. Then we decided to spend our holiday there. This beach was so quiet. There were only few tourists that we met. They were all from Australia. So, we agreed to prace our English ability with them. Although we stuttered and stumbled in the conversation, we could still understand the points. They said they loved this beach. This beach was still natural and less pollution. After that, we were playing on the seashore till we were tired. Then in the evening we went home. At 8.00 p.m. we arrived at home safely. I got so many beautiful experiences there.

- Ở địa phương em có Động Phong Nha, Hang Sơn Đòong.
- Khi đi du lịch, em đã ngăn cản những người có í định phá hoại, tuyên truyền cho mọi người cùng bảo vệ,...