Why does the earth have day and night?
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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.
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.)
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).
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.
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...............................................................................................................................
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 .................... 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
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.
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.
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.
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.
Day and night are due to the Earth rotating on its axis