"One Day's Garbage" Environment and Us PPT download

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"One Day's Garbage" Environment and Us PPT download

Part 1: Importing new lessons

We consume food and various daily necessities every day, and at the same time, we also produce a lot of garbage. How much trash does my house produce in a day? What's in the trash? Let's conduct a study on trash.

One day of garbage PPT, part two: exploring new knowledge

A day’s worth of trash in my house

What's the trash in your house?

Leftover rice, vegetable leaves, cans, waste newspapers, etc.

Broken glass cups, broken light bulbs, waste batteries, fruit peels, etc.

Snack packaging bags, expired cosmetics, expired plastics, expired medicines.

Sort the trash into categories and weigh it. Fill out the daily garbage statistics form for my house.

Discussion about garbage

Garbage refers to the solid waste generated by human beings in the process of survival and development. Where does the garbage come from?

Usually according to the source of garbage, it is divided into domestic waste, industrial waste and agricultural waste.

Domestic waste refers to solid waste generated in daily life or activities that provide services for daily life, and solid waste that is regarded as domestic waste according to laws and administrative regulations.

The impact of waste on the environment.

(1) A large amount of harmful gases such as ammonia and sulfide are released when garbage is piled in the open, seriously polluting the atmosphere and the urban living environment.

(2) Seriously pollute water bodies. It will cause serious pollution of surface water and groundwater.

(3) Biological pollution. There are many pathogenic microorganisms in garbage. At the same time, garbage is often a breeding ground for mosquitoes, flies, and cockroaches, which will inevitably endanger the health of the general public.

(4) Occupying a large amount of land.

(5) Garbage explosion accidents continue to occur.

There are many ways to dispose of garbage. Which ones do you know?

Garbage Disposal Act

(1) Sanitary burial method: As the name suggests, it is to find an open space and bury the garbage.

(2) Incineration method: After sorting the garbage, it is sent to the incinerator for burning.

(3) Fertilizer method: Stack the garbage to rot the fiber and organic matter of the waste and turn it into fertilizer to improve the soil.

A day of garbage PPT, part three: expansion and extension

Domestic waste classification

Generally, it can be divided into four categories: recyclable garbage, kitchen garbage, hazardous garbage and other garbage.

Commonly used garbage disposal methods include comprehensive utilization, sanitary landfill, incineration and composting.

Industrial waste classification

1. Food waste: refers to the waste generated by people in the process of buying, selling, storing, processing, and eating various foods. Including waste paper products, rags and various textiles.

2. General garbage and food waste are the main objects that can be recycled in urban garbage.

3. Construction waste: including soil, stones, concrete blocks, broken bricks, waste wood, waste pipes and electrical waste, etc.

4. Hazardous waste: including various chemical and biological hazards, flammable and explosive items and waste containing radioactive materials. This type of garbage generally cannot be mixed with ordinary garbage.

Agricultural waste classification:

1. Farmland and orchard residues, such as straw, residual plants, weeds, fallen leaves, etc.

2. Livestock and poultry manure and pen bedding, etc.;

3. Agricultural product processing waste;

4. Human feces and domestic waste.

A day of garbage PPT, part 4: summary of this lesson

1. Garbage refers to the solid waste generated by human beings in the process of survival and development. It is usually divided into domestic waste, industrial waste and agricultural waste according to the source of the waste.

2. Garbage disposal method

(1) Sanitary burial method (2) Incineration method (3) Fertilizer method

3. Domestic waste can generally be divided into four categories: recyclable waste, kitchen waste, hazardous waste and other waste.

A day of garbage PPT, part 5: exercises for this lesson

1. Judgment questions

1. We produce a lot of garbage every day ( )

2. Garbage will pollute the air, soil, and water bodies, attract flies, and spread diseases. ( )

3. Kitchen waste does not need to be bagged or sealed. Just throw it away. ( )

4. Glass items should be handled with care to avoid damage. ( )

2. Fill in the blanks

1. When we consume food and various daily necessities every day, we also produce a lot of___________.

2. Nowadays, the way to dispose of garbage at home is generally___________.

3.__________ refers to the solid waste generated by human beings in the process of survival and development. It is usually divided into __________, __________ and __________ according to the source of the waste.

4. Commonly used garbage disposal methods mainly include ________, ________, ________ and ________.

A day of garbage PPT, part 6: homework

Share, what kind of experience do you have after studying this course?

Keywords: Free download of the science PPT courseware for the second volume of the sixth grade in the textbook version, a day's garbage PPT download, environment and us PPT download, .PPT format;

For more information about the PPT courseware "Environment and our daily garbage", please click the "Environment and our daily garbage ppt" tab.

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Update Time: 2024-11-21

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