"One Day's Domestic Water" Environment and Us PPT download

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"One Day's Domestic Water" Environment and Us PPT download

Part One: Exploring New Knowledge

How much water do I use in a day?

Fresh water is necessary for the survival of us humans and other creatures. However, the fresh water resources on the earth are very limited, and most areas on the earth are short of water.

Turn on the faucet and water flows out. We use water every day. Estimate how much water I use in a day?

How can we know how much water a family uses in a day?

A water meter is a device that measures water usage. It is common in tap water users, and its degree is used as the basis for calculating water bills. Water meters usually measure in cubic feet (ft³) or cubic meters (m³).

Check the water meter at home. How much water does our family use in a day?

Divide the daily water consumption by the number of people in the household to get the average water consumption per person per day.

Water consumption per day ÷ number of people in the household = average water consumption per person per day

water stress

What are the causes of water stress?

Due to rapid population growth, environmental pollution and global warming, the world's per capita water supply has begun to decrease since 1970 and continues to decline. At present, 60% of the continent faces insufficient fresh water resources, and more than 100 countries are seriously short of water, including more than 40 countries with the most serious problems. It is expected that the global per capita water supply will decrease by one-third in the next 20 years.

Current status of water resources in China

China is a country suffering from severe drought and water shortage. Although the total amount of freshwater resources is abundant, the per capita amount is scarce. In recent years, the amount of water resources in northern China has decreased significantly, especially in the Yellow River, Huaihe River, Haihe River and Liaohe River regions. Periodic water shortages in some northern river basins have intensified. Although my country's water resources are scarce, waste and pollution are very serious. Low sewage treatment rates have led to widespread surface water contamination and overexploitation.

A day of domestic water PPT, part 2: expansion and extension

The current water situation and potential crisis

First, it makes drinking water difficult for local residents.

Second, it leads to increased desertification and cracks in the land.

Third, it leads to seawater intrusion.

Fourth, the local ecological environment has been damaged, fish and shrimp have disappeared, no grass grows, livestock has difficulty drinking water, and there is no noise from insects, which seriously restricts the sustainable development of the economy and society.

National water conservation logo

The "National Water Conservation Logo" is deformed from water droplets, palms and the earth. The green circle represents the earth, symbolizing that water conservation is an important measure to protect the earth's ecology. The blank part of the logo is like a hand holding up a drop of water. The hand is a deformation of the pinyin letter JS, which means saving water. It means that water saving requires public participation and encourages people to start with me and save every drop of water. The hand is like A meandering river symbolizes the dripping water that merges into a river.

A day's domestic water use PPT, the third part: summary of this lesson

1. Fresh water is a necessity for the survival of us humans and other creatures. However, the fresh water resources on the earth are very limited, and most areas on the earth are short of water.

2. Different water consumption habits lead to different water consumption in different households in a day.

3. Develop my water saving plan.

A day's use of domestic water PPT, part 4: exercises for this lesson

1. Judgment questions

1. Fresh water is a necessity for the survival of humans and other creatures, but fresh water resources on the earth are very limited. ( )

2. Water is inexhaustible, so we don’t need to save water. ( )

3. After washing our hands, we must turn off the faucet in time. ( )

4. Using laundry water to flush the toilet is also a way to save water. ( )

2. Fill in the blanks

1. ___________ is a necessity for us humans and other animals to survive.

2. The world’s per capita water supply continues to decrease due to _____________, __________, and _______________.

3. Currently, the continent of ______ is facing a natural shortage of fresh water, and more than 100 countries are seriously short of water, with the most serious countries reaching ______________.

4. China is a _______________ country. Although freshwater resources are abundant in total, ____________________.

3. Short answer questions

Tell me how you save water in your daily life?

1. When taking a shower, take your time.

2. Save face wash water and use it for flushing toilets and mopping floors. Reuse water.

3. Control the faucet, turn it on and off to small and medium water volume, and turn off the water in time.

4. Use the basin to wash your face and hands.

5. Use a cup to brush your teeth to save water.

6. Wash small items of clothing by hand.

A day of domestic water PPT, 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 the sixth grade in the textbook edition, PPT download of a day’s daily life water, PPT download of the environment and us, .PPT format;

For more information about the PPT courseware "Environment and Our Daily Use of Water for Living", please click the "Environment and Our Daily Use of Water for Living" ppt tag.

"One Day's Domestic Water" environment and our PPT teaching courseware:

"One Day's Domestic Water" Environment and Our PPT Teaching Courseware Part One: Review of the previous section 1. What kind of garbage do used toilet paper, waste lamp tubes, express packaging boxes, and banana peels belong to? 2. What three substances are contained in batteries that pose a great threat to the natural environment? ..

"One Day's Domestic Water" Environment and Us PPT:

"A Day's Living Water" Environment and Us PPT Part One Content: How much water do I use in a day? Turn on the faucet and water flows out. We use water every day. Estimate how much water I use in a day? Check the water meter at home. Our family needs...

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Update Time: 2024-07-29

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

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