"Disposable Daily Supplies" PPT Courseware 3

Description

"Disposable Daily Supplies" PPT Courseware 3

Review of old knowledge

In which places in our lives are there more dust?

How to prevent the harm caused by dust to humans?

Discussion and reflection

Have you ever used disposable daily necessities? What benefits does it bring us?

Look at the pictures to learn about the supplies.

Where do plastic products go after they are used?

Look at the pictures on page 63 of the textbook to learn how people deal with plastic waste.

Which of these behaviors are right and which are wrong? Why?

Horrible white pollution

In daily life, plastic bags and plastic products bring us a lot of convenience. But if we don't handle them properly, they may cause pollution.

The phenomenon and causes of white pollution

Phenomenon: Littered plastic bags of various colors and white foam lunch boxes pile up like mountains, polluting the environment.

Reason: People throw away various plastic products without processing them. These substances are difficult to break down.

The dangers of white pollution

First, land occupation. Plastic waste stays in nature for a long time, generally up to 200-400 years.

Second, pollute the air. Plastic and dust flew in the wind.

Third, pollute water bodies. Plastic bottles and lunch boxes floating on the water, and plastic bags hanging on branches not only cause environmental pollution; if animals accidentally eat the white garbage, it will harm their health, and they may even starve to death because they are unable to digest it because it is entangled in their digestive tracts.

Fourth, fire hazard. White garbage is almost all combustible. Fire accidents occur constantly when exposed to open flames or spontaneous combustion, often causing heavy losses.

Non-recyclable garbage: mainly kitchen garbage, including peels, vegetable leaves, leftovers, etc.;

Toxic and hazardous waste: batteries, fluorescent lamps, mercury thermometers, paint buckets, medicines, cosmetics, etc.

Recyclable garbage: paper, plastic, rubber, metal, glass, etc.;

Keywords: Disposable daily necessities teaching courseware, E-education version fifth grade science PPT courseware download, volume 2, fifth grade science slide courseware download, disposable daily necessities PPT courseware download, .PPT format;

For more information about the "Disposable Daily Supplies" PPT courseware, please click on the "Disposable Daily Supplies" PPT tab.

"Disposable Daily Supplies" PPT Courseware 2:

"Disposable Daily Supplies" PPT Courseware 2 Thinking: What materials are disposable daily necessities made of? Benefits of disposable products 1. A great achievement of science 2. Convenient, fast and cheap 3. Some people think it is more hygienic 4. Medical supplies must be...

"Disposable Daily Supplies" PPT courseware:

"Disposable Daily Supplies" PPT Courseware Discussion and Thoughts Students, with the continuous improvement of living standards and the accelerating pace of life, more and more disposable items have entered our lives. Now please tell me where you have used it once in your life..

File Info

Update Time: 2024-06-30

This template belongs to science courseware E-education edition fifth grade science volume 2 industry PPT template

Preview