"Nuclear Energy" PPT courseware

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"Nuclear Energy" PPT courseware

Part One: Nuclear Energy

The energy released during changes in the nucleus of an atom.

There are two ways to obtain nuclear energy:

1. Fission

A process in which a more massive atomic nucleus splits into two new nuclei under neutron bombardment and releases energy.

2. Fusion

The process in which two atomic nuclei with smaller mass combine to form a new nucleus with larger mass and release energy at the same time.

nuclear fission model

Neutrons are like the matches that light "nuclear fuel."

Nuclear fission applications

Atomic bombs are made based on the principle of nuclear fission. It is the result of an uncontrollable chain reaction!

Nuclear fusion power generation

——Nuclear fusion power generation is an important technology under research in the 21st century. It mainly heats fusion fuel to a high temperature of more than 100 million degrees, allowing it to generate nuclear fusion, and then utilizes thermal energy.

nuclear weapon

——Using the principle of nuclear fusion to make hydrogen bombs.

Nuclear energy PPT, part 2: Nuclear energy reaction

1. Fission – chain reaction

2. Fusion - thermonuclear reaction

Peaceful uses of nuclear energy - Nuclear power plants

A nuclear power plant is a thermal power plant that uses the energy released by nuclear fission or nuclear fusion reactions to generate electricity. Due to technical obstacles in controlling nuclear fusion, nuclear power plants currently in commercial operation use nuclear fission reactions to generate electricity.

Thinking: How is energy transformed during the working process of a power station?

Nuclear energy→internal energy→mechanical energy→electric energy

Nuclear energy PPT, Part 3: Safety of nuclear power plants

Main safety issues caused by nuclear power:

1. If the nuclear reaction is out of control, it will damage the equipment and cause the leakage of radioactive materials;

2. Improper disposal of radioactive waste can lead to environmental pollution.

radioactivity

Radioactivity means that elements spontaneously emit rays from unstable nuclei (such as alpha rays, beta rays, gamma rays, etc.) and decay to form stable elements and stop emitting (decay products). This phenomenon is called radioactivity.

Applications of radioactive phenomena

X-ray cancer treatment

Nuclear power generation

Eliminate static electricity

Understand the absorption and loss of fertilizers and eliminate pests

Determining the age of antiquities (radioactive dating)

Nuclear energy PPT, part 4: main sources of radiation

1) Fallout from nuclear weapons testing.

2) The "three wastes" emissions from the nuclear fuel cycle.

3) Caused by medical exposure.

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"Nuclear Energy" Energy and Sustainable Development PPT teaching courseware:

"Nuclear Energy" Energy and Sustainable Development PPT Teaching Courseware Part One: A Classification Practice of Knowledge Points Knowledge Point 1 Understanding Nuclear Energy 1. Protons and neutrons are tightly bound together by strong ________, so the nucleus is very strong, but once the nucleus ___...

"Nuclear Energy" Energy and Sustainable Development PPT download:

"Nuclear Energy" Energy and Sustainable Development PPT Download Part 1 Content: Guided Design Learning Points Nuclear Energy Question 1: Protons and neutrons are closely bound together by the strong nuclear force. Once the heavier atomic nucleus undergoes ________ or mass Smaller nuclei interact with each other...

"Nuclear Energy" Energy and Sustainable Development PPT:

"Nuclear Energy" Energy and Sustainable Development PPT Part One Content: Knowledge Points Basic Knowledge Point 1 Nuclear Energy 1. Regarding atoms, nuclei and nuclear energy, which of the following statements is correct (D) A. Atoms are composed of protons and electrons B. Atomic nuclei can only be aggregated when Only by releasing nuclear energy C...

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Update Time: 2024-11-30

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