"Inspection of the Natural Waters in My Hometown" Environment and Us PPT Download

Description

"Inspection of the Natural Waters in My Hometown" Environment and Us PPT Download

Part 1: Importing new lessons

Is the water in the natural waters in your hometown polluted? What causes pollution? Let’s go check it out!

Discuss in groups, think about what to pay attention to during the inspection, and formulate an inspection plan.

PPT on investigating the natural waters in my hometown, part two: exploring new knowledge

Field trips

To truly understand the environmental conditions of our hometown waters, we need to conduct on-site inspections.

How to conduct a physical inspection?

The specific method is as follows:

(1) During the inspection, first check what kind of environment is around the water area and whether there is any wastewater discharge.

(2) Look at the color of the water, whether there are animals and plants in the water, and whether there are any pollutants on the water surface.

(3) Finally, take a bottle of water sample and bring it back to school for inspection and observation.

During the inspection process, it is necessary to be careful, comprehensive, and record it in a timely manner. If necessary, take photos or consult local residents.

Collection of water samples

What should we pay attention to when collecting water samples?

1) When taking samples, be careful that the shore is slippery and do not go into deep water;

2) Do not touch the water directly with your hands. You can collect it with a spoon and funnel. The container can be an empty mineral water bottle or a glass bottle.

3) After collection, cover the lid in time, and the collected water must be analyzed in time.

How to observe water samples

How to observe water samples?

(1) Let the water sample stand for a period of time to see if any impurities have precipitated, and then determine what the impurities are.

(2) Use a microscope to check whether there are tiny organisms invisible to the naked eye in the water.

Group work. Dictate the inspection report based on the observation results

PPT on investigating the natural waters in my hometown, part three: expansion and extension

According to the environmental functions and protection objectives of surface water areas, they are divided into five categories according to their functions:

The first category is mainly applicable to source water and national nature reserves;

The second category is mainly applicable to first-level protected areas of centralized drinking water surface water sources, rare aquatic creature habitats, fish and shrimp production grounds, feeding grounds for young and young fish, etc.;

The third category is mainly applicable to secondary protection areas of centralized drinking water surface water sources, fish and shrimp wintering grounds, migratory passages, aquaculture areas and other fishery waters and swimming areas; the fourth category is mainly applicable to general industrial water areas and Recreational water areas with indirect human contact;

The fifth category is mainly suitable for agricultural water areas and waters with general landscape requirements.

PPT on investigating the natural waters in my hometown, part 4: summary of this lesson

1. During the inspection, first check what kind of environment is around the water area and whether there is any wastewater discharge. Then look at the color of the water, whether there are animals and plants in the water, and whether there are any pollutants on the water surface. Finally, take a bottle of water sample and bring it back to school for inspection and observation.

2. Things to note when observing water samples

3. Method of observing water samples

PPT on investigating the natural waters in my hometown, part 4: exercises for this lesson

1. Judgment questions

1. We do not need to be accompanied by our parents when we inspect the waters of our hometown. ( )

2. When inspecting the waters in your hometown to take samples, be careful that the shore is slippery and do not go to deep water areas ( )

3. When inspecting and sampling the waters in your hometown, do not touch the water directly with your hands. It is best to wear gloves. ( )

4. Use a microscope to find that the specimen movement direction is the same as the image direction. ( )

2. Multiple choice questions

1. Among the following choices, ( ) is not a method for inspecting natural waters.

A Let it stand for precipitation B Observe with a microscope C Smell and taste

2. Many early natural science research methods used to obtain first-hand information ( )

A investigation B research C paper

3. ( ) generally refers to rivers, lakes, canals, channels, reservoirs, wetlands and other places where water gathers

A natural river B natural water area C natural area

4. Which item should be paid attention to when observing water during field inspection ( )

A. What is the color of the water? B. Are there animals and plants in the water? C. The scenery around the water

3. Short answer questions

1. How to protect the water environment in our hometown?

1. Start with yourself and don’t throw garbage into the reservoir.

2. Promote the protection of our reservoirs to people around you.

3. Organize a spontaneous organization to clean up the garbage beside the reservoir.

4. Suggest to the government to strengthen the management of reservoirs.

5. Resolutely resist all behaviors that damage the environment and strengthen supervision.

2. What should you pay attention to when collecting water samples?

1. Conduct inspections accompanied by teachers.

2. Be careful and comprehensive during the inspection.

3. When taking samples, be careful that the shore is slippery and do not go to deep water areas.

4. When taking samples, do not touch the water directly with your hands. It is best to wear gloves.

PPT on investigating the natural waters in my hometown, part 5: homework

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

Keywords: free download of science PPT courseware for the second volume of sixth grade in the textbook version, PPT download of inspection of natural waters in hometown, environment and us PPT download, .PPT format;

For more information about the PPT courseware "Environment and our inspection of the natural waters in our hometown", please click the "Environment and our inspection of the natural waters in our hometown ppt" tab.

"Inspecting the Natural Waters of My Hometown" Environment and Us PPT:

"Inspecting the Natural Waters in My Hometown" Environment and Us PPT Part One: Making a Plan Is the water in the natural waters in my hometown polluted? What causes pollution? Let’s go check it out! Preparation before the inspection activity 1. Discuss the plan of the inspection activity..

File Info

Update Time: 2024-11-04

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

Preview