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All questions of Water for Class 6 Exam
What are structures built to impede the flow of rainwater?- a)Rain collectors
- b)Drainage systems
- c)Rain gardens
- d)Rainwater harvesting tanks
Correct answer is option 'B'. Can you explain this answer?
a)
Rain collectors
b)
Drainage systems
c)
Rain gardens
d)
Rainwater harvesting tanks
|
Vp Classes answered |
Structures built to impede the flow of rainwater are typically drainage systems. These systems are designed to manage rainwater by controlling its flow, preventing flooding, and facilitating the collection of water for various purposes. One interesting fact is that well-designed drainage systems not only help prevent water-related issues but also contribute to groundwater recharge and sustainable water management.
How much of the Earth's water is freshwater that is readily available for human use?- a)2.5%
- b)1%
- c)50%
- d)75%
Correct answer is option 'A'. Can you explain this answer?
a)
2.5%
b)
1%
c)
50%
d)
75%
|
Dr Manju Sen answered |
Only 2.5% of all the water on Earth is freshwater, which is suitable for human consumption and use. This freshwater is essential for various activities such as drinking, agriculture, and industrial processes.
Why is water conservation considered essential, particularly with the increasing human population?- a)To promote waterborne diseases
- b)To prevent depletion of freshwater sources
- c)To increase soil erosion
- d)To accelerate rainfall
Correct answer is option 'B'. Can you explain this answer?
a)
To promote waterborne diseases
b)
To prevent depletion of freshwater sources
c)
To increase soil erosion
d)
To accelerate rainfall
|
Praveen Kumar answered |
Water conservation is essential to prevent the depletion of freshwater sources, especially with the increasing human population leading to freshwater scarcity. By conserving water, communities can sustainably manage their water resources, ensuring availability for current and future generations. This practice is crucial for mitigating water stress and promoting environmental sustainability.
How does collecting rainwater contribute to increasing water availability?- a)By reducing water consumption
- b)By preventing evaporation of rainwater
- c)By storing rainwater for future use
- d)By diverting rainwater to rivers
Correct answer is option 'C'. Can you explain this answer?
a)
By reducing water consumption
b)
By preventing evaporation of rainwater
c)
By storing rainwater for future use
d)
By diverting rainwater to rivers
|
Subset Academy answered |
Collecting rainwater contributes to increasing water availability by storing rainwater for future use. Rainwater harvesting systems collect and store rainwater that can be used for various purposes such as irrigation, household chores, and even drinking water in some cases. This practice helps reduce the demand on traditional water sources like rivers and groundwater, thereby contributing to increased water availability. An interesting fact is that rainwater harvesting has been practiced for centuries in various cultures around the world.
What percentage of freshwater on Earth is frozen in polar regions?- a)0.5%
- b)1.5%
- c)10%
- d)25%
Correct answer is option 'B'. Can you explain this answer?
a)
0.5%
b)
1.5%
c)
10%
d)
25%
|
|
Dr Manju Sen answered |
Approximately 1.5% of freshwater on Earth is frozen in polar regions, primarily in the form of ice sheets and glaciers. This frozen freshwater plays a crucial role in regulating global sea levels and supporting polar ecosystems.
What does the water table represent in the context of groundwater?- a)The depth at which groundwater is found
- b)The amount of water in a well
- c)The rate of groundwater percolation
- d)The temperature of groundwater
Correct answer is option 'A'. Can you explain this answer?
a)
The depth at which groundwater is found
b)
The amount of water in a well
c)
The rate of groundwater percolation
d)
The temperature of groundwater
|
|
Dr Manju Sen answered |
The water table represents the level at which groundwater is found beneath the ground surface. It indicates the depth at which the soil and rock are saturated with water. Understanding the water table is crucial for managing groundwater resources and accessing clean drinking water through wells and other groundwater sources.
In which state does water exist when it is in the form of ice and snow?- a)Gaseous
- b)Liquid
- c)Solid
- d)Plasma
Correct answer is option 'C'. Can you explain this answer?
a)
Gaseous
b)
Liquid
c)
Solid
d)
Plasma
|
Rohini Seth answered |
Water exists in a solid state when it is in the form of ice and snow. The molecules in water slow down and come together in an orderly arrangement when water freezes, forming a solid structure. This state change occurs when water's temperature drops below 0 degrees Celsius.
What is the primary function of a rain garden?- a)Storing rainwater for later use
- b)Preventing rainwater from seeping into the ground
- c)Filtering pollutants from rainwater
- d)Diverting rainwater into sewer systems
Correct answer is option 'C'. Can you explain this answer?
a)
Storing rainwater for later use
b)
Preventing rainwater from seeping into the ground
c)
Filtering pollutants from rainwater
d)
Diverting rainwater into sewer systems
|
|
Rohini Seth answered |
The primary function of a rain garden is to filter pollutants from rainwater. Rain gardens are designed to capture rainwater runoff from impervious surfaces, allowing it to slowly infiltrate into the ground. As the water percolates through the soil in the rain garden, pollutants are removed, helping to improve water quality. An interesting fact is that rain gardens can also support biodiversity by providing habitats for various plant and animal species.
Why is understanding the distribution, uses, and conservation of water crucial for ensuring a sustainable and sufficient water supply for all?- a)To prevent water scarcity
- b)To promote economic development
- c)To ensure equitable access to water
- d)To protect aquatic ecosystems
Correct answer is option 'C'. Can you explain this answer?
a)
To prevent water scarcity
b)
To promote economic development
c)
To ensure equitable access to water
d)
To protect aquatic ecosystems
|
Gunjan Lakhani answered |
Understanding the distribution, uses, and conservation of water is crucial for ensuring a sustainable and sufficient water supply for all to ensure equitable access to water resources. By managing water resources effectively, we can ensure that water is available for various needs, including drinking, agriculture, industry, and ecosystem support. This helps in promoting water security and reducing the risks of water scarcity, especially in regions where access to clean water is limited.
How is groundwater primarily formed according to the information provided?- a)Through direct collection from rainfall
- b)By percolation of rainwater into the ground
- c)By the evaporation of water bodies
- d)Through the process of desalination
Correct answer is option 'B'. Can you explain this answer?
a)
Through direct collection from rainfall
b)
By percolation of rainwater into the ground
c)
By the evaporation of water bodies
d)
Through the process of desalination
|
Eduskill Classes answered |
Groundwater is primarily formed through the process of percolation, where rainwater seeps into the soil and collects underground. This forms reservoirs of freshwater beneath the surface, which can be accessed through wells. Groundwater plays a crucial role in providing clean drinking water to populations around the world.
What is the primary function of hydroelectric power plants?- a)To generate wind energy
- b)To harness geothermal energy
- c)To convert solar energy into electricity
- d)To use the force of flowing water to generate electricity
Correct answer is option 'D'. Can you explain this answer?
a)
To generate wind energy
b)
To harness geothermal energy
c)
To convert solar energy into electricity
d)
To use the force of flowing water to generate electricity
|
|
Dr Manju Sen answered |
Hydroelectric power plants utilize the force of flowing water to generate electricity. This is achieved by directing the flow of water to turn turbines connected to generators, converting the kinetic energy of water into electrical energy. Hydroelectric power is a renewable and clean energy source that contributes significantly to global electricity production.
What natural process involves evaporation, condensation, cloud formation, and precipitation?- a)Photosynthesis
- b)Osmosis
- c)The Water Cycle
- d)Aerobic Respiration
Correct answer is option 'C'. Can you explain this answer?
a)
Photosynthesis
b)
Osmosis
c)
The Water Cycle
d)
Aerobic Respiration
|
|
Subset Academy answered |
The natural process that involves evaporation, condensation, cloud formation, and precipitation is known as the water cycle. This continuous cycle plays a vital role in distributing water around the Earth, ensuring the availability of freshwater for various ecosystems and human activities.
Why are wells and lakes emphasized as vital sources of freshwater ?- a)Due to their constant supply of water
- b)Because they are unaffected by seasonal changes
- c)They are mainly used for recreational purposes
- d)Their replenishment relies on rainfall
Correct answer is option 'D'. Can you explain this answer?
Why are wells and lakes emphasized as vital sources of freshwater ?
a)
Due to their constant supply of water
b)
Because they are unaffected by seasonal changes
c)
They are mainly used for recreational purposes
d)
Their replenishment relies on rainfall
|
Shiksha Academy answered |
Wells and lakes are highlighted as essential sources of freshwater because they rely on rainfall for replenishment. Seasonal rainfall ensures that these water sources are filled, emphasizing the importance of precipitation for sustaining these vital water bodies. This reliance on rainfall underscores the significance of managing water resources effectively to ensure continued availability.
How do large dams contribute to water management and energy production?- a)By releasing water into oceans to prevent flooding
- b)By storing river water to prevent it from flowing into oceans
- c)By diverting water to agricultural lands
- d)By extracting water for industrial use
Correct answer is option 'B'. Can you explain this answer?
a)
By releasing water into oceans to prevent flooding
b)
By storing river water to prevent it from flowing into oceans
c)
By diverting water to agricultural lands
d)
By extracting water for industrial use
|
|
Praveen Kumar answered |
Large dams play a crucial role in water management by storing river water, thus preventing it from flowing into oceans. This stored water can be used for various purposes such as irrigation, drinking water supply, flood control, and hydroelectric power generation.
How have human activities impacted the small percentage of remaining freshwater on Earth?- a)Increased salinity
- b)Pollution
- c)Decreased evaporation
- d)Enhanced filtration
Correct answer is option 'B'. Can you explain this answer?
a)
Increased salinity
b)
Pollution
c)
Decreased evaporation
d)
Enhanced filtration
|
Coachify answered |
Human activities have led to pollution of a small percentage of the remaining 1% of freshwater on Earth. Pollution from various sources such as industrial waste, agricultural runoff, and untreated sewage can contaminate freshwater sources, posing risks to aquatic ecosystems and human health.
In what way can using polluted water for irrigation impact crops and health in agriculture?- a)Improve crop yields
- b)Have no effect on crops
- c)Harm crops and health
- d)Enhance soil fertility
Correct answer is option 'C'. Can you explain this answer?
a)
Improve crop yields
b)
Have no effect on crops
c)
Harm crops and health
d)
Enhance soil fertility
|
|
Coachify answered |
The use of polluted water for irrigation in agriculture can have detrimental effects on crops and health. Polluted water may contain harmful chemicals, pathogens, or contaminants that can be absorbed by plants, affecting their growth and quality. Additionally, consuming crops grown with polluted water can pose health risks to consumers, highlighting the importance of using clean water for irrigation to ensure food safety and crop productivity.
Why is releasing untreated wastewater considered a punishable act in industries?- a)To conserve water resources
- b)To promote environmental sustainability
- c)To prevent water pollution
- d)To avoid legal consequences
Correct answer is option 'D'. Can you explain this answer?
a)
To conserve water resources
b)
To promote environmental sustainability
c)
To prevent water pollution
d)
To avoid legal consequences
|
|
Praveen Kumar answered |
Releasing untreated wastewater in industries is considered a punishable act primarily to prevent water pollution and protect the environment. Untreated wastewater can contain harmful substances that can contaminate water bodies, harm aquatic life, and pose risks to human health. By enforcing penalties for releasing untreated wastewater, authorities aim to deter industries from polluting water sources and encourage them to implement proper wastewater treatment measures to safeguard the environment and public health.
Why is water essential for various daily activities in homes?- a)To cause pollution
- b)To harm crops
- c)To provide energy
- d)To support activities like cooking, drinking, and bathing
Correct answer is option 'D'. Can you explain this answer?
a)
To cause pollution
b)
To harm crops
c)
To provide energy
d)
To support activities like cooking, drinking, and bathing
|
|
Coachify answered |
Water is crucial for daily activities in homes such as cooking, drinking, and bathing. It is essential for hygiene, food preparation, and overall health maintenance. Without access to clean water, these daily tasks would become significantly more challenging and could pose health risks to individuals and communities.
What percentage of the Earth's surface is covered with water, earning it the nickname "Blue Planet"?- a)50%
- b)75%
- c)25%
- d)90%
Correct answer is option 'B'. Can you explain this answer?
a)
50%
b)
75%
c)
25%
d)
90%
|
|
Gunjan Lakhani answered |
The Earth is often referred to as the "Blue Planet" because three-fourths, or 75%, of its surface is covered with water. This abundance of water gives our planet its distinctive blue appearance when viewed from space.
Why is groundwater considered a crucial source of clean drinking water?- a)Due to its high mineral content
- b)Because it is easily accessible
- c)It is immune to contamination
- d)Its natural filtration process
Correct answer is option 'D'. Can you explain this answer?
a)
Due to its high mineral content
b)
Because it is easily accessible
c)
It is immune to contamination
d)
Its natural filtration process
|
EduRev Class 6 answered |
Groundwater is regarded as a crucial source of clean drinking water because of its natural filtration process. As rainwater seeps through layers of soil and rock, impurities are filtered out, resulting in naturally purified water stored underground. This filtration process helps maintain the quality of groundwater, making it a reliable and essential source of clean drinking water for communities worldwide.
How is water utilized to produce electricity?- a)By generating heat
- b)By creating magnetic fields
- c)By conducting electricity
- d)By powering turbines in hydropower plants
Correct answer is option 'D'. Can you explain this answer?
a)
By generating heat
b)
By creating magnetic fields
c)
By conducting electricity
d)
By powering turbines in hydropower plants
|
|
EduRev Class 6 answered |
Water is utilized to produce electricity through hydropower plants, where the energy of flowing water is used to turn turbines connected to generators. As the turbines spin, they convert the kinetic energy of water into mechanical energy, which is then transformed into electrical energy. Hydropower is a renewable and sustainable energy source that plays a significant role in generating electricity worldwide, contributing to energy security and reducing reliance on fossil fuels.
Chapter doubts & questions for Water - Eureka Plus Class 6: Book Solutions, Notes & Worksheets 2025 is part of Class 6 exam preparation. The chapters have been prepared according to the Class 6 exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Class 6 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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Eureka Plus Class 6: Book Solutions, Notes & Worksheets
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