Read the following passage and decide if it is T or F. 

   Energy is one of the problems that many people are interested in. It is not an unfamiliar word. It is heard, said, discussed day after day. It is close to everyone’s daily life. You turn on a lamp and it is energy that gives you light. You turn on a TV and it is energy that gives you pictures and sound. You ride a motorcycle and it is energy that gives you movement. You cook your meals and it is energy that gives you heat to boil rice.

   The problem is that the demand for energy is rising and that the price of energy is getting higher and higher. The supply of energy on earth is limited. It cannot provide us forever. The shortage of energy in the future is inevitable. Therefore, saving energy is a must if we want to continue to live in a safe and sound world.

* Notice:

   familiar: thân thuộc

   demand: nhu cầu

   inevitable: chắc chắn xảy ra

___ Many people aren’t interested in the problems of energy.

Read the following passage and decide if it is T or F.

   Energy is one of the problems that many people are interested in. It is not an unfamiliar word. It is heard, said, discussed day after day. It is close to everyone’s daily life. You turn on a lamp and it is energy that gives you light. You turn on a TV and it is energy that gives you pictures and sound. You ride a motorcycle and it is energy that gives you movement. You cook your meals and it is energy that gives you heat to boil rice.

   The problem is that the demand for energy is rising and that the price of energy is getting higher and higher. The supply of energy on earth is limited. It cannot provide us forever. The shortage of energy in the future is inevitable. Therefore, saving energy is a must if we want to continue to live in a safe and sound world.

* Notice:

   familiar: thân thuộc

   demand: nhu cầu

   inevitable: chắc chắn xảy ra

___ Energy is heard, said, discussed day after day.

Read the following passage and decide if it is T or F.

   Energy is one of the problems that many people are interested in. It is not an unfamiliar word. It is heard, said, discussed day after day. It is close to everyone’s daily life. You turn on a lamp and it is energy that gives you light. You turn on a TV and it is energy that gives you pictures and sound. You ride a motorcycle and it is energy that gives you movement. You cook your meals and it is energy that gives you heat to boil rice.

   The problem is that the demand for energy is rising and that the price of energy is getting higher and higher. The supply of energy on earth is limited. It cannot provide us forever. The shortage of energy in the future is inevitable. Therefore, saving energy is a must if we want to continue to live in a safe and sound world.

* Notice:

   familiar: thân thuộc

   demand: nhu cầu

   inevitable: chắc chắn xảy ra

___ We can’t watch TV without energy.

Calculate the de Broglie wavelength for (a) an electron with a kinetic energy for 100 eV, (b) a proton with a kinetic energy of 100 eV, and (c) an electron in the first Bohr orbit of a hydrogen atom.

Tính bước sóng Đơ Brơi trong các trường hợp sau:

a) một electron có động năng T = 100 eV,

b) một proton có động năng T = 100 eV,

c) một electron ở quỹ đạo Bohr đầu tiên của nguyên tử Hyđro có vận tốc v = 2,1877.10⁶ m/s.

Read the following passage and decide if it is T or F.

   Energy is one of the problems that many people are interested in. It is not an unfamiliar word. It is heard, said, discussed day after day. It is close to everyone’s daily life. You turn on a lamp and it is energy that gives you light. You turn on a TV and it is energy that gives you pictures and sound. You ride a motorcycle and it is energy that gives you movement. You cook your meals and it is energy that gives you heat to boil rice.

   The problem is that the demand for energy is rising and that the price of energy is getting higher and higher. The supply of energy on earth is limited. It cannot provide us forever. The shortage of energy in the future is inevitable. Therefore, saving energy is a must if we want to continue to live in a safe and sound world.

* Notice:

   familiar: thân thuộc

   demand: nhu cầu

   inevitable: chắc chắn xảy ra

___ The word “energy” is familiar and close to everyone’s daily life.

Read the following passage and decide if it is T or F.

   Energy is one of the problems that many people are interested in. It is not an unfamiliar word. It is heard, said, discussed day after day. It is close to everyone’s daily life. You turn on a lamp and it is energy that gives you light. You turn on a TV and it is energy that gives you pictures and sound. You ride a motorcycle and it is energy that gives you movement. You cook your meals and it is energy that gives you heat to boil rice.

   The problem is that the demand for energy is rising and that the price of energy is getting higher and higher. The supply of energy on earth is limited. It cannot provide us forever. The shortage of energy in the future is inevitable. Therefore, saving energy is a must if we want to continue to live in a safe and sound world.

* Notice:

   familiar: thân thuộc

   demand: nhu cầu

   inevitable: chắc chắn xảy ra

___ The supply of energy on earth is unlimited. It can provide us forever.

Read the following passage and decide if it is T or F.

   Energy is one of the problems that many people are interested in. It is not an unfamiliar word. It is heard, said, discussed day after day. It is close to everyone’s daily life. You turn on a lamp and it is energy that gives you light. You turn on a TV and it is energy that gives you pictures and sound. You ride a motorcycle and it is energy that gives you movement. You cook your meals and it is energy that gives you heat to boil rice.

   The problem is that the demand for energy is rising and that the price of energy is getting higher and higher. The supply of energy on earth is limited. It cannot provide us forever. The shortage of energy in the future is inevitable. Therefore, saving energy is a must if we want to continue to live in a safe and sound world.

* Notice:

   familiar: thân thuộc

   demand: nhu cầu

   inevitable: chắc chắn xảy ra

___ If we want to continue to live in a safe and sound world, we have to save energy.

* Choose word or phrase – A, B, C or D – that needs correcting.
1. He saw her while / he / went to school yesterday.
            A              B       C      D
2. The old man / is wearing a black suit is a famous energy researcher.
              A                  B                              C               D
3. If Mary went / out last night, she would have missed seeing that film.
                 A          B                      C                                      D
4. Natural resources provide the raw material are needed to produce finished

            A                                                                     B             C

goods.
D 
5. In the last hundred years, traveling / has become much easier but more

          A                                            B                C                                     D

comfortable.
6. I went to a reunion for students educating in the physics department

                            A                                B                      C

during the 1980s.
  D
7. The surgeon tried / their best to save his life, but unfortunately the

                               A        B

operation was / successful .
                    C         D
8. In an essay / writing in 1779, Judith Sargeant Murray promoted the cause

          A                    B                                                                                 C

of /women’s education.
             D
9. It was suggested that Pedro studies the material more thoroughly before

                                                         A                            B

attempting /  to pass the exam.
C                      D
10. Louisa May Alcott, she best known for her books for children, served as a

                                       A                                 B                                    C

nurse during the Civil War.
             D

Energy is one of the problem that many people are interested in. It is not an unfamiliar word. It is heard, said, discussed day after day. It is close to everyone's daily life. You turn on the lamp and it is energy that gives you light. You turn on a TV and it is energy that gives you pictures and sound. You ride a motocycle and it is energy that gives you movement. You cook your meals and it is energy that gives you heat to boil rice.
The problem is that the demand for energy is rising and that the price of energy is getting higher and higher. The supply of energy on earth is limited. It cannot provide us all forever. The shortage of energy in the future is inevitable. Therefor, saving energy is a must if we want to contine to live in a cafe and sound world.

2 What is the problem that the demand for energy?

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1 How is the price of energy nowaday?

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3 Can we watch TV without Energy?

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4 What Should you do to save energy at home?

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