Work in pairs. List some of the things you use energy for in your house. (Liệt kê một số trong những thứ sử dụng nâng lượng trong nhà của bạn.)
LISTENING
Before you listen
Work in pairs. List some of the things you use energy for in your house. (Liệt kê một số trong những thứ sử dụng nâng lượng trong nhà của bạn.)
- Oil, coal, natural gas are called...
- coal, water are natural resources.
- wind and solar power are called renewable.
While you listen
Task 1. Listen and complete the sentences by circling the letter A, B, C or D.
(Lắng nghe và hoàn thành câu bằng cách khoanh tròn chữ cái A, B, C hoặc D.)
1. Ecology is the study of…………..
A. human beings and animals
B. the environment and solar energy
C. natural and alternative resources
D. human beings and their environment
2. The natural environment consists of……………….
A. the oceans and the land B. the sun and the air
C. all natural resources D. the air and the oceans
3. If the resource can be…………., it is called renewable.
A. burnt quickly B. used easily
C. divided properly D. replaced quickly
4. Grass for animals is a………….resource.
A. renewable B. nonrenewable
c. limited D. clean
5. According to the passage, coal is nonrenewable because it takes ………to make it.
A. billions of years B. millions of years
C. three million years D. three billion years
1. D 2.C 3. D 4.A 5. B
TAPESCRIPT
The natural environment includes all natural resources that are necessary for life: the air. the oceans, the sun and the land. Because they are vital for life these resources must be protected from pollution and conserved. Ecologists study their importance and how to use them caretully.
According to ecologists, resources are divided into 2 groups: renewable and non-renewable. When a resource can be replaced quickly, it is called renewable. If it cannot be replaced quickly and easily, it is non renewable. For example grass for animals is a renewable resource. When cows eat the grass, the resource is used. If the soil is fertilized and protected, more grass will grow. Coal, however, is nonrenewable because it takes millions of years to make coal. All fossil fuels are nonrenevvable resources.
Solar energy, air, and water are renewable resources because there is an unlimited supply. However, this definition may be changed if people are not careful with these resources. The amount of solar energy that reaches the earth depends on the atmosphere. If the atmosphere is polluted, the solar energy that reaches the earth may be dangerous. If life is going to continue, the air must contain the correct amount of nitrogen (N), oxygen (O), carbon dioxide (CO:), and other gases. If humans continue to pollute the air, it will not contain the correct amount of these aases.
Task 2. Listen again to the last pan of the talk and write in the missing words. (Nghe lại phần cuối cùng của cuộc nói chuyện và viết các từ còn thiếu)
Solar enerey, air, and water are renewable resources because there is an unlimited supply. However, this definition may change if people are not careful with these resourees. The amount of solar energy that reaches the earth depends on the atmosphere. If the atmosphere is polluted, the solar energy that reaches the earth may be dangerous. If life is going to continue, the air must contain the correct amount of nitrogen (N), oxygen (O), carbon dioxide (CO), and other gases. If humans continue to pollute the air, it will not contain the correct amount of these gases.
After you listen
Which Iiroup do these sources of energy belons to? Put a tick (V) in the right column. (Các nguồn nũng lirợtig này thuộc vào nhóm nào? Ghi dầu (N) vào cột đúng.)
Sources of energy
Non-renewable
Renewable
Coal
V
Geotherman heat
V
Petroleum
V
Solar energy
V
Oil
V
Wind energy
V
Gas
V
