you can walk up and down these and they are smaller than mountains

NH

Ngô Hải Đăng

20 tháng 4 - olm

#Tiếng anh lớp 6

5

NH

Ngô Hải Đăng

20 tháng 4

GGiúp mình với

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TP

Trần Phúc Thủy Tiên

20 tháng 4

bạn có thể đi lên xuống những thứ này và chúng nhỏ hơn những ngọn núi

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MN

Mr Nike

15 tháng 11 2021 - olm

Question 1: Rules for Running Running is a great way to exercise. To be safe when you run, always follow these rules. Walk or run slowly at first. You can then run more quickly. This will help your body warm up and keep you from getting hurt. Relax your arms, hold your head up, and keep your hands cupped. Always wear colorful clothes and be careful of traffic. Comfortable running shoes are important, too. After you run, walk slowly for five to eight minutes. This will help you cool down. Relax...

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#Tiếng anh lớp 5

2

LN

Lê Nguyên Hải

15 tháng 11 2021

1. Walk or run slowly at first

2. Colorful clothes and comfortable shoes

3. Relax and drink water

Q1. ko bt

Q2. Follow the Rules for Running

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DV

Đào Vũ Đan Khanh

15 tháng 11 2021

1. Walk run slowly , you can run more quickly.
2. comfortable running shoes and colorful clothes.
3. After you run wallk slowly for 5 to 8 minuet.
Q1 and Q2 i dont khow how to answere yet

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LQ

Lê Quỳnh Anh

1 tháng 5 2017

Read the passage and choose the best answer among A, B, C, or D. Throughout the United States, the number of places where people are allowed to smoke has gradually ecome smaller and smaller. First, it was banned on trains, buses and plancs, then in public places such as theatres and airports. Now you can’t smoke in any workplace. Nonsmokers are definitely winning the battle. “Why should we breathe their smoke ?”, they say. If they are lucky, smokers can still find some bars and...

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#Mẫu giáo

1

DH

Dương Hoàn Anh

1 tháng 5 2017

Đáp án là D. Dựa vào ý: “it was banned on trains, buses and planes, then in public places such as theatres and airports.”

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LQ

Lê Quỳnh Anh

20 tháng 9 2017

Read the passage and choose the best answer among A, B, C, or D. Throughout the United States, the number of places where people are allowed to smoke has gradually ecome smaller and smaller. First, it was banned on trains, buses and plancs, then in public places such as theatres and airports. Now you can’t smoke in any workplace. Nonsmokers are definitely winning the battle. “Why should we breathe their smoke ?”, they say. If they are lucky, smokers can still find some bars and...

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#Mẫu giáo

1

DH

Dương Hoàn Anh

20 tháng 9 2017

Đáp án là A. smokers’ smoke: khói thuốc lá từ những người hút thuốc

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VT

Vy Trần Hoàng

25 tháng 8 2021

Underline the correct alternative. 1 Go up/past/down the restaurant and the lifts are on the left. 2 You can walk down/round/straight on the hotel to get to the rose garden at the back. 3 Walk round/onto/along the corridor beside the conference room. 4 Follow the signs onto/up/to reception. 5 When you come to the swimming pool, continue straight on/past/right to a green door. 6 This door will take you into/along/up the fitness centre. 7 You can get to the terrace along/into/through the...

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#Tiếng anh lớp 12

0

LQ

Lê Quỳnh Anh

2 tháng 12 2018

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 following questionsAtomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in...

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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 following questions

Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in manmade particle accelerators and perhaps in extreme stellar events like supernovas. The structure of an atom can best be described as a small solar system, with the neutrons at the center and the electrons circling them in various orbits, just as the planets circle the sun. In reality, the structure of an atom is far more complex, because the laws of physics are fundamentally different at the atomic level than at the level of the observable word. The true nature of atomic structure can only be expressed accurately through complex mathematical formulas. This explanation, however, is of little use to most average people.

Protons and neutrons have nearly equal mass and size, but protons carry a positive electrical charge, while neutrons carry no charge at all. Protons and neutrons are bound together by the strong nuclear force, one of the four basic forces in the universe. Protons and neutrons give atoms some of their most basic properties. Elements are defined by two numbers: their atomic number, which is equal to the number of protons they have, and their atomic weight, which is equal to total number of their neutrons and protons. In most lighter atoms, the number of neutrons and protons is equal, and the element is stable. In heavier atoms, however, there are more neutrons than protons, and the element is unstable, eventually losing neutrons through radioactive decay until a neutral state is reached.

Electrons are negatively charged particles. They are bound to their atoms through electromagnetic attraction. Opposite electrical charges attract one another, so the positive charge of the proton helps to keep the negatively charged electron in orbit around the nucleus of the atom. Electrons are different from neutrons in that they cannot be broken down into smaller particles. They are also far smaller and lighter than neutrons and protons. An electron is about one thousandth of the diameter of a proton and an even smaller fraction of its mass. Electrons circle the protons and neutrons at the center of the atom in orbits. These orbits are often called electron shells. The closer the orbit is to the center of the atom, the lower its energy is. There are seven electron shells, and each higher level can hold more electrons than the previous shell. Electrons naturally seek to occupy the lowest shell possible. So, if there is space in a lower shell, an electron will drop down to occupy that space. At temperatures higher than a few hundred degrees, electrons will gain energy and move to a higher shell, but only momentarily. When the electrons drop back down to their natural shell, they emit light. This is why fires and other very hot objects seem to glow

According to the information in paragraph 2, what will happen if an atom has more neutrons than protons?

A. It will not have enough of a positive electrical charge to keep its electrons in orbit

B. Its extra neutrons will be converted into light energy

C. It will slowly give off neutrons until the atom becomes stable

D. Its nucleus will explode in a supernova

#Mẫu giáo

1

DH

Dương Hoàn Anh

2 tháng 12 2018

Chọn C

Kiến thức: Đọc hiểu

Giải thích: 20

Theo thông tin trong đoạn 2, điều gì sẽ xảy ra nếu một nguyên tử có nhiều nơtron hơn proton?

A. Nó sẽ không có đủ điện tích dương để giữ các electron của nó trong quỹ đạo.

B. Các nơtron thừa ra của nó sẽ được chuyển thành năng lượng ánh sáng.

C. Nó sẽ từ từ giải phóng nơtron cho đến khi nguyên tử trở về dạng bền vững.

D. Hạt nhân của nó sẽ phát nổ trong một sao băng.

Thông tin: In heavier atoms, however, there are more neutrons than protons, and the element is unstable, eventually losing neutrons through radioactive decay until a neutral state is reached.

Tạm dịch: Tuy nhiên, trong các nguyên tử nặng hơn, có nhiều nơtron hơn proton và nguyên tố này không bền vững, cuối cùng mất đi nơtron thông qua sự phân rã phóng xạ cho đến khi đạt được trạng thái cân bằng

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LQ

Lê Quỳnh Anh

10 tháng 4 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 following questions.Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in...

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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 following questions.

Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in manmade particle accelerators and perhaps in extreme stellar events like supernovas. The structure of an atom can best be described as a small solar system, with the neutrons at the center and the electrons circling them in various orbits, just as the planets circle the sun. In reality, the structure of an atom is far more complex, because the laws of physics are fundamentally different at the atomic level than at the level of the observable word. The true nature of atomic structure can only be expressed accurately through complex mathematical formulas. This explanation, however, is of little use to most average people.

Protons and neutrons have nearly equal mass and size, but protons carry a positive electrical charge, while neutrons carry no charge at all. Protons and neutrons are bound together by the strong nuclear force, one of the four basic forces in the universe. Protons and neutrons give atoms some of their most basic properties. Elements are defined by two numbers: their atomic number, which is equal to the number of protons they have, and their atomic weight, which is equal to total number of their neutrons and protons. In most lighter atoms, the number of neutrons and protons is equal, and the element is stable. In heavier atoms, however, there are more neutrons than protons, and the element is unstable, eventually losing neutrons through radioactive decay until a neutral state is reached.

Electrons are negatively charged particles. They are bound to their atoms through electromagnetic attraction. Opposite electrical charges attract one another, so the positive charge of the proton helps to keep the negatively charged electron in orbit around the nucleus of the atom. Electrons are different from neutrons in that they cannot be broken down into smaller particles. They are also far smaller and lighter than neutrons and protons. An electron is about one thousandth of the diameter of a proton and an even smaller fraction of its mass. Electrons circle the protons and neutrons at the center of the atom in orbits. These orbits are often called electron shells. The closer the orbit is to the center of the atom, the lower its energy is. There are seven electron shells, and each higher level can hold more electrons than the previous shell. Electrons naturally seek to occupy the lowest shell possible. So, if there is space in a lower shell, an electron will drop down to occupy that space. At temperatures higher than a few hundred degrees, electrons will gain energy and move to a higher shell, but only momentarily. When the electrons drop back down to their natural shell, they emit light. This is why fires and other very hot objects seem to glow.

According to paragraph 3, when does an atom produce light?

A. When it has more electrons than its electron shells can hold

B. When energy is added to the outermost electron shell

C. When an electron drops back to its original electron shell

D. When an electron is transferred from one atom to another

#Mẫu giáo

1

DH

Dương Hoàn Anh

10 tháng 4 2019

Chọn C

Kiến thức: Đọc hiểu

Giải thích:

Theo đoạn 3, khi nào một nguyên tử phát ra ánh sáng?

A. Khi nó có nhiều electron hơn so với số lượng mà lớp electron của nó có thể giữ được.

B. Khi năng lượng được thu thêm vào lớp electron ngoài cùng.

C. Khi một electron rơi trở lại lớp electron ban đầu của nó.

D. Khi một electron được chuyển từ nguyên tử này sang nguyên tử khác.

Thông tin: When the electrons drop back down to their natural shell, they emit light.

Tạm dịch: Khi các electron rơi trở lại lớp ban đầu của mình, chúng phát ra ánh sáng

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LQ

Lê Quỳnh Anh

26 tháng 9 2018

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 following questions. Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in...

Đọc tiếp

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 following questions.

Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in manmade particle accelerators and perhaps in extreme stellar events like supernovas. The structure of an atom can best be described as a small solar system, with the neutrons at the center and the electrons circling them in various orbits, just as the planets circle the sun. In reality, the structure of an atom is far more complex, because the laws of physics are fundamentally different at the atomic level than at the level of the observable word. The true nature of atomic structure can only be expressed accurately through complex mathematical formulas. This explanation, however, is of little use to most average people.

Protons and neutrons have nearly equal mass and size, but protons carry a positive electrical charge, while neutrons carry no charge at all. Protons and neutrons are bound together by the strong nuclear force, one of the four basic forces in the universe. Protons and neutrons give atoms some of their most basic properties. Elements are defined by two numbers: their atomic number, which is equal to the number of protons they have, and their atomic weight, which is equal to total number of their neutrons and protons. In most lighter atoms, the number of neutrons and protons is equal, and the element is stable. In heavier atoms, however, there are more neutrons than protons, and the element is unstable, eventually losing neutrons through radioactive decay until a neutral state is reached.

Electrons are negatively charged particles. They are bound to their atoms through electromagnetic attraction. Opposite electrical charges attract one another, so the positive charge of the proton helps to keep the negatively charged electron in orbit around the nucleus of the atom. Electrons are different from neutrons in that they cannot be broken down into smaller particles. They are also far smaller and lighter than neutrons and protons. An electron is about one thousandth of the diameter of a proton and an even smaller fraction of its mass. Electrons circle the protons and neutrons at the center of the atom in orbits. These orbits are often called electron shells. The closer the orbit is to the center of the atom, the lower its energy is. There are seven electron shells, and each higher level can hold more electrons than the previous shell. Electrons naturally seek to occupy the lowest shell possible. So, if there is space in a lower shell, an electron will drop down to occupy that space. At temperatures higher than a few hundred degrees, electrons will gain energy and move to a higher shell, but only momentarily. When the electrons drop back down to their natural shell, they emit light. This is why fires and other very hot objects seem to glow.

The phrase "one another" in bold in paragraph 3 refers to _______.

A. electrons

B. electrical charges

C. particles

D. atoms

#Mẫu giáo

1

DH

Dương Hoàn Anh

26 tháng 9 2018

Chọn B

Kiến thức: Đọc hiểu

Giải thích:

Cụm từ "one another" in đậm trong đoạn 3 đề cập đến _______.

A. electron

B. các điện tích

C. các hạt

D. các nguyên tử

Thông tin: Opposite electrical charges attract one another, so the positive charge of the proton helps to keep the negatively charged electron in orbit around the nucleus of the atom.

Tạm dịch: Các điện tích trái dấu nhau thì hút nhau, vì vậy điện tích dương của proton giữ electron tích điện âm trong quỹ đạo quay xung quanh hạt nhân của nguyên tử

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LQ

Lê Quỳnh Anh

11 tháng 7 2017

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct wordfor each of the blanks. Scientists say that (44) _______ the next thirty years we will not be able to tell the difference between the real people and the virtual people- that is, people created by computer. These virtual humans are already in films and computer games and engineers are setting up experiments to see if they can develop a (45) _______ feeling virtual people. And the...

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