"Classification and Recycling" Environment and Us PPT Courseware 3

Description

"Classification and Recycling" Environment and Us PPT Courseware 3

Research Background

The natural environment is a necessary condition for human survival. However, while humans are developing themselves at a rapid pace, they are also destroying their own living environment. Today we are facing serious threats from environmental pollution and ecological imbalance, global warming, and damage to the ozone layer. , water resources pollution, forest decline...

These are all problems that need to be solved urgently before mankind. We will search on the topic of garbage classification and recycling to let people know and understand the utilization of recyclable garbage resources, enhance people's awareness of environmental protection, and save resources. , maintain ecological balance.

research problem:

1. What is recyclable garbage?

2. What are the categories of recyclable garbage?

3. What is the function of this garbage?

4. How to recycle these garbage?

5. How to classify garbage in daily life?

Types of garbage that can be recycled (1)

mainly include:

1. Paper: writing paper, packaging paper and other paper products that are not seriously stained. Such as newspapers, various wrapping papers, office paper, advertising paper, cartons, etc.;

2. Plastic: waste container plastic, packaging plastic and other plastic products. For example, various plastic bags, plastic bottles, foam plastics, disposable plastic lunch boxes and tableware, hard plastics, etc.;

Types of garbage that can be recycled (2)

3. Metal: Various categories of scrap metal items. Such as cans, tin cans, lead toothpaste skins, waste batteries, etc.;

4. Glass: colored and colorless waste glass products;

5. Fabrics: old textile clothing and textile products. Non-recyclables refer to garbage other than recyclable garbage. Common garbage is easily decomposed under natural conditions, such as fruit peels, vegetable leaves, leftovers, flowers, branches and leaves, etc.

The dangers of waste batteries

If a No.1 battery rots in the soil, 1 square meter of soil will permanently lose its use value;

One button battery will render 600 tons of water undrinkable, equivalent to a person's lifetime drinking water.

Heavy metals cannot be excreted from the body through human metabolism

After years of bioconcentration

Heavy metal poisoning may occur.

Conclusion

Garbage is misplaced resources. Recycling garbage not only beautifies the environment, but reusing garbage can save the mining of new resources and fundamentally regulate garbage.

Participating in environmental protection can be done with just a little effort. Let’s start with the small things around us and start by disposing of garbage correctly.

Do it: Design a sorting bin for your home and classroom, and be a little environmental protector.

"Sorting and Recycling" Exercise

1. Fill in the blanks.

1. For some wastes in life, we can ____ them from the garbage and ____________. Doing so can not only __________, but also __________________.

2. In our lives, the items I often recycle include _______, _______, and __________.

3. Recycling plastic products is very common in life, because plastic can _______________ and recycling plastic can __________.

4. Waste batteries contain three toxic substances: _______, _______, and __________.

5. ______________ must also be handled in a centralized manner, otherwise it will spread diseases and endanger our health.

6. It usually takes ____________ to make a compost bin before the garbage is fully decomposed.

2. Choice

1. Which of the following statements about garbage recycling is correct ( ).

A. If the cost of recycling is higher than the cost of raw material processing, it will no longer be recycled.

B. Recycling glass is cheaper than making glass directly from natural raw materials because the melting temperature of glass is lower than that of raw material.

C. In order to reduce waste, everything must be recycled.

2. ( ) is an important method to reduce the amount of garbage.

A. Use disposable items B. Choose beautifully packaged items C. Reuse

3. The food (that cannot be eaten) spent overnight in life belongs to ( ).

A. Other garbage B. Recyclable garbage C. Kitchen waste

4. Which of the following garbage cannot be decomposed naturally ( ).

A. Fish bones and vegetable leaves B. Eggshells and paper scraps C. Plastic fast food boxes

5. Among the following garbage, the ones that should be handled with caution are ( ).

A. Old clothes B. Mobile phone batteries C. Old newspapers

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For more information about the PPT courseware "Environment and Us Classification and Recycling", please click the Environment and Us ppt Classification and Recycling ppt tag.

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Update Time: 2024-11-22

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 2 industry PPT template

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