Water is a precious resource and one of the few things that sustain life on Earth. This worksheet introduces students in Grade 7 to water as a resource and its importance in our lives. From understanding water usage, the water cycle, and conservation techniques, this worksheet offers an interactive way to learn all the key concepts related to this invaluable resource.

What is water scarcity?

Water scarcity is a term used to describe areas with limited freshwater resources, which often times lead to an unreliable or insufficient supply of water. This is usually caused by drought, climate change, or population growth which can all cause a decrease in available freshwater and make it harder for people to get the water they need. In some regions, water scarcity can be so severe that people do not even have access to enough clean drinking water.

Why is water conservation important?

Water conservation is important for many reasons. On an individual level, conserving water can reduce water bills and help to conserve energy by using less of it. On a larger scale, conserving water can prevent shortages and prevent depletion of natural resources. In some areas of the world, water conservation is essential to preserving ecosystems that depend on a certain amount of water in order to survive. Conservation helps preserve biodiversity and aquatic ecosystems as well as protect valuable wetlands.

How does the Water Cycle work?

The water cycle, also known as the hydrological cycle, is the process by which water moves from one place to another. Water is drawn from bodies of water, like oceans and lakes, into the atmosphere through evaporation. From there, it is carried in the form of clouds and falls back to Earth as precipitation in the form of rain or snow. This precipitation then replenishes rivers, lakes and oceans - beginning the whole cycle over again.

What are the three uses of water in our lives?

Water has three primary uses in our everyday lives. First, it provides an essential source of drinking water for humans and animals. Second, it is used for agriculture, providing moisture for crops to grow. Third, water is often used to generate electricity in dams and rivers. Additionally, water is used industrially with manufacturing processes such as plumbing, cooling and heating systems; transportation vessels like ships; and also within mining operations to recover valuable minerals from deposits.

What happens when there is an imbalance in the Water Cycle?

When there is an imbalance in the water cycle it can lead to a lot of issues. In particular, it can cause droughts or floods. For example, if too much water evaporates from oceans and rivers or too little rainfall occurs over an extended period of time, the water supply in regions can become depleted which leads to drought. This can result in decreased agricultural yield, shortages of potable water, elevated health risks from contaminated groundwater, wildfires and economic disruption. Similarly, when there is too much rainfall concentrated in one area, like what happens with tropical storms and hurricanes, over saturation can occur which leads to flooding.

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Water A precious Resource Extra Questions and Answers for class 7

1. What is water?

Water is a transparent, odourless, tasteless liquid that is essential for the survival of all known living organisms.

2. Why is water a precious resource?

Water is a precious resource because it is essential for life on Earth. It is used for drinking, washing, cooking, agriculture, industrial processes, and many other purposes. It is also a limited resource, and many areas of the world are facing water shortages.

3. How is water distributed on Earth?

Water is distributed on Earth in the form of oceans, rivers, lakes, and groundwater. The majority of the Earth's water is found in the oceans, which cover about 71% of the planet's surface.

4. What is the water cycle?

The water cycle is the continuous process by which water evaporates from the surface of the Earth, forms clouds, falls back to the Earth as precipitation, and then flows back into the oceans, rivers, and lakes.

5. What is rainwater harvesting?

Rainwater harvesting is the process of collecting and storing rainwater for later use. It can be done on a small scale, such as collecting rainwater in a barrel for gardening, or on a large scale, such as building a reservoir to store rainwater for agricultural or industrial use.

6. How can we save water?

We can save water by reducing our water usage through measures such as fixing leaks, taking shorter showers, and using water-efficient appliances. We can also reuse water by using graywater for irrigation or flushing toilets.

7. What are some sources of water pollution?

Some sources of water pollution include industrial waste, agricultural runoff, sewage, and oil spills.

8. How can we prevent water pollution?

We can prevent water pollution by reducing the amount of pollutants we release into the environment, treating wastewater before it is released back into the environment, and enforcing regulations to prevent pollution from occurring in the first place.

9. What are some of the effects of water pollution?

Water pollution can have a wide range of effects on human health, aquatic life, and ecosystems. It can lead to diseases such as cholera and typhoid, harm fish and other aquatic animals, and disrupt the balance of ecosystems.

10. What can individuals do to help protect water resources?

Individuals can help protect water resources by using water efficiently, properly disposing of hazardous chemicals, and supporting policies that promote the conservation and protection of water resources.

FAQs

1. What is water a precious resource in Class 7?

Water a Precious Resource is a chapter in the Class 7 Science curriculum that focuses on the importance of water, its sources, uses, and conservation.

2. What topics are covered in the water a precious resource chapter of Class 7?

The water a precious resource chapter of Class 7 covers topics such as the importance of water, sources of water, forms of water, the water cycle, uses of water, conservation of water, and rainwater harvesting.

3. What is the water cycle and how is it explained in Class 7?

The water cycle is the continuous process by which water evaporates from the surface, forms clouds, and returns to the Earth as precipitation. In Class 7, the water cycle is explained with the help of a diagram that illustrates the process of evaporation, condensation, precipitation, and collection.

4. What are the different forms of water that are explained in Class 7?

The different forms of water that are explained in Class 7 are liquid water, solid ice, and gaseous water vapor.

5. How can we save water as explained in Class 7?

Class 7 suggests various ways to save water, such as turning off the tap while brushing teeth, fixing leaking taps and pipes, using a bucket instead of a hose while washing cars or watering plants, and practicing rainwater harvesting.

6. What is rainwater harvesting and how is it explained in Class 7?

Rainwater harvesting is the process of collecting and storing rainwater for future use. In Class 7, rainwater harvesting is explained as an effective method of conserving water by using techniques such as rooftop rainwater harvesting, recharge pits, and storage tanks.

7. What are the important questions in the water a precious resource chapter of Class 7?

Some important questions in the water a precious resource chapter of Class 7 are: What are the sources of water? How is rainwater harvesting done? What is the water cycle? What are the forms of water? How can we conserve water? What are the uses of water?

8. What are the extra questions and answers available for the water a precious resource chapter of Class 7?

There are many extra questions and answers available for the water a precious resource chapter of Class 7, which can be found in various textbooks also at witknowlearn witknowlearn

9. What is the importance of water in our daily lives, as explained in Class 7?

Water is an essential resource that is required for various activities in our daily lives, such as drinking, cooking, bathing, washing clothes, and irrigation. Class 7 emphasizes the importance of water for our survival and the need to conserve it.

10. What is the lesson plan for the water a precious resource chapter of Class 7?

The lesson plan for the water a precious resource chapter of Class 7 includes activities such as group discussions, hands-on experiments, and project work to help students understand the importance of water and the need to conserve it.