"Development and Utilization of Energy" Chemistry and Life PPT Courseware 2

Description

"Development and Utilization of Energy" Chemistry and Life PPT Courseware 2

teaching objectives

1. Know the advantages of solar energy being huge, clean and easy to use, and understand the current ways and methods for human beings to utilize solar energy.

2. Understand fission and fusion, the manufacturing principles of atomic bombs, the functions of nuclear reactors, and the principles and characteristics of nuclear power plants.

1. Solar energy—the eternal source of power

Reading and discussion

What is the significance and value of human development of solar energy?

Through what channels is solar energy absorbed and utilized by life on earth?

What are the current technologies for humans to utilize solar energy?

What are the advantages and disadvantages of solar energy?

1. Solar energy is a huge energy source

do you know?

1. How much solar radiation is there?

3.8×1023kw

2. How much solar energy reaches the ground?

1.7×1014kw

3. How many times higher than the total power generation in the world?

5×104

2. The four main channels through which the earth absorbs and utilizes solar energy.

What are the four main channels through which the earth absorbs and utilizes solar energy?

1. Absorbed by plant microorganisms

2. Make the atmosphere and water rise and circulate

3. Absorbed by the ocean

4. Direct use

3. Direct use of solar energy

(1) Solar energy → internal energy

A. Solar water heater

(2) Solar energy→electric energy

B. Photovoltaic power station for solar power generation

(3) Solar energy → chemical energy

C. Use solar energy to produce hydrogen and drive cars

2. Nuclear energy—the “magic fire” that benefits mankind

1. What is nuclear energy?

2. What are the two ways to release nuclear energy?

3. What is nuclear fission? Chain reaction?

4. How does a nuclear power plant work?

5. What are the advantages of nuclear power plants?

(1) Nuclear energy concept:

The huge energy contained inside the nucleus is called nuclear energy, or nuclear energy for short.

(2) There are two ways to release nuclear energy:

1. Nuclear fission

2. Nuclear fusion

Peaceful use of nuclear energy - nuclear power plants

do you know?

If all 1Kg of uranium 235 undergoes nuclear fission, the energy released is equivalent to the energy released by the complete combustion of 2500 tons of standard coal.

How nuclear power plants work

It uses the energy generated by the chain reaction of nuclear fission to generate electricity; its core is the reactor; the reactor converts the released nuclear energy into the internal energy of high-temperature steam, which is then converted into electrical energy through a turbine generator.

Nuclear fusion - thermonuclear reaction

Nuclear fusion - A nuclear reaction that can combine two lighter nuclei (such as deuterium and tritium) into a heavier nucleus under ultra-high temperature conditions. Nuclear fusion is also called thermal energy reaction.

Solar energy comes from nuclear fusion inside the sun.

3. Energy conservation and energy development

1. The significance of energy conservation and the importance of developing new energy sources.

2. Two ways to solve energy problems:

(1) Develop new energy

(2) Improve energy utilization

4. Summary of this section

1. Four main channels for utilizing solar energy

① Absorbed by plant microorganisms; ② Make the atmosphere and water rise and circulate;

③Absorbed by the ocean; ④Used directly

2. Three main ways to directly utilize solar energy

① Solar energy → thermal energy; ② Solar energy → electrical energy; ③ Solar energy → chemical energy

3. Advantages and Disadvantages of Solar Energy

Advantages: ① Very huge, ② Long-term supply time,

③ Widely distributed and easy to obtain, ④ safe, clean and pollution-free.

Disadvantages: ① too dispersed, ② unstable, ③ low conversion efficiency.

5. Consolidate practice

1. The satellite sails in space for a long time. Its radio transmitting device can work normally without artificial replenishment of energy. It uses ______ batteries to convert ______ energy into _____ energy.

2. The new energy that countries around the world are currently developing is ______, which is contained within ______. There are two ways to obtain atomic energy: one is ________ and the other is ________. What happened at my country's famous Daya Bay Nuclear Power Plant was _______. Solar energy is _______ that comes from the sun.

3. Among the following energy sources, the new energy source is _______.

A.Solar energy B.Water energy C.Coal D.Electric energy E.Ocean energy

F. Wind energy G. Oil H. Natural gas I. Hot springs

4. Our country is the largest coal-producing country in the world and has a large coal reserve. Until now, coal is still the primary energy source in our country. Each energy source fundamentally comes from ( )

A. The role of geothermal heat and ground pressure B. Photosynthesis of solar energy

C. Decomposition and erosion of bacteria D. Interaction between the earth and other celestial bodies

5. The fundamental difference between atomic bombs and nuclear power plants is ( )

A. Atomic bombs use nuclear fission, and nuclear power plants use nuclear fusion.

B. Atomic bombs use nuclear fusion, and nuclear power plants use nuclear fission.

C. Atomic bombs do not control the chain reaction of fission, while nuclear power plants control the speed of the chain reaction of fission.

D. Atomic bombs do not control the chain reaction of fission, while nuclear power plants control the speed of the chain reaction of fusion.

Keywords: Chemistry and Life Teaching Courseware, Energy Development and Utilization Teaching Courseware, Hunan Education Edition Ninth Grade Chemistry PPT Courseware Download Volume 2, Ninth Grade Chemistry Slide Courseware Download, Chemistry and Life PPT Courseware Download, Energy Development and Utilization PPT Courseware download, .PPT format;

For more information about the PPT courseware "Chemistry and the Development and Utilization of Energy in Life", please click the "Development and Utilization of Energy in Chemistry and Life ppt" ppt tab.

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Update Time: 2024-07-23

This template belongs to Chemistry courseware Hunan Education Edition Ninth Grade Chemistry Volume 2 industry PPT template

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