EVS Grade 5 Lesson 6 - Water

What is the main source of water on Earth?

Rain

Name one secondary source of water.

Rivers

Which type of water is stored underground?

Groundwater

What do we call the upper level of groundwater?

Water table

Name two natural water bodies.

Lakes and rivers

What is an aquifer?

A layer of rock holding water underground

Name one artificial water source made by humans.

Wells

Which type of water is most used for irrigation in villages?

Well water

What fills ponds, lakes, and rivers naturally?

Rainwater

Which river is called “Sorrow of Bihar”?

River Kosi

Which river is considered holy by Hindus?

River Ganga

What type of water do coastal people mostly use?

Groundwater

Why is seawater not fit for drinking?

It is salty

What is the process of cleaning seawater called?

Desalination

Which water is stored in tanks for daily use?

Rainwater

What is the purest form of water in nature?

Rainwater

What is the importance of wells in villages?

They provide drinking and irrigation water

What type of well is dug by hand?

Open well

Which type of well uses pumps to lift water?

Tube well

Which water body is considered the lifeline of India?

Rivers

What is another name for step wells in Gujarat?

Vav

Which city is famous for Chand Baori step well?

Abhaneri, Rajasthan

Which ancient king built the Grand Anicut dam?

Karikala Chola

Name a Harappan city famous for water storage.

Dholavira

Which Harappan site had dockyards and water tanks?

Lothal

Where is Inamgaon located?

Maharashtra

Which crops were irrigated at Inamgaon?

Bajra, pulses, wheat, rice

What is Arthashastra?

A book on administration by Kautilya

Which ancient book described tanks and bunds for irrigation?

Arthashastra

On which river was the Grand Anicut built?

River Kaveri

What is Kudimaramathu?

A traditional practice of maintaining water bodies

Which ancient city used a tank system at Sringaverapura?

Near Allahabad (Prayagraj)

Why were temple tanks built?

For religious use and water storage

Which lake in Bhopal was built by King Bhoj?

Bhojtal

What is another name for Bhojtal?

Upper Lake

Name a step well listed as UNESCO heritage.

Rani ki Vav

Where is Rani ki Vav located?

Patan, Gujarat

Why were step wells useful?

To store water and provide cool resting places

Which dynasty built many temple tanks?

Cholas

Which irrigation system used bunds?

Ancient tank irrigation

Who was Kautilya also known as?

Chanakya

Which Harappan city had advanced underground drains?

Mohenjo-daro

What were the drains in Harappa made of?

Baked bricks

Which ancient king built Chand Baori?

King Chanda of Abhaneri

Why was Grand Anicut important?

It irrigated large areas of Tamil Nadu

What is rainwater harvesting?

Collecting and storing rainwater for use

Why is rainwater harvesting important?

To recharge groundwater and prevent scarcity

What is rooftop harvesting?

Collecting rainwater from roofs into tanks

What is urban water harvesting?

Collecting rainwater in cities through rooftops and roads

What is rural water harvesting?

Collecting rainwater in ponds and tanks in villages

Which ancient system is similar to rainwater harvesting?

Temple tanks

Which village in Tamil Nadu is famous for water harvesting revival?

Ralegan Siddhi

Who is known as the “Waterman of India”?

Rajendra Singh

Which modern problem can water harvesting prevent?

Day Zero

What is an advantage of water harvesting?

Prevents waterlogging

Which state has many step wells for harvesting?

Gujarat

Which modern cities promote rooftop harvesting?

Chennai, Bangalore

Which government scheme promotes water conservation?

Jal Shakti Abhiyan

Why do coastal areas need rainwater harvesting?

To prevent seawater intrusion

What is seawater intrusion?

Mixing of seawater into freshwater sources

Why are recharge wells dug?

To refill underground aquifers

Which practice reduces floods in cities?

Urban rainwater harvesting

Which crops need irrigation from harvested water?

Paddy, wheat, sugarcane

Which structure is most common in villages for harvesting?

Ponds

Which festival in Tamil Nadu is linked with tanks and water?

Aadi Perukku

Which district in Rajasthan revived johads?

Alwar

Name one advantage of johads.

Increased groundwater

What is the main cause of water scarcity?

Overuse and wastage

Which modern city faced Day Zero in 2018?

Cape Town

What does Day Zero mean?

When water supply almost ends

Which human activities pollute water?

Industries and sewage

Which disease spreads due to dirty water?

Cholera

What is fluoride excess in water called?

Fluorosis

What is lack of iodine in water/food called?

Goitre

Why are tube wells drying up?

Over pumping of groundwater

Which state in India often faces drought?

Rajasthan

Which state faces floods due to excessive rains?

Assam

What is the effect of deforestation on water?

Less rainfall

What is the effect of global warming on water?

Melting glaciers

Which glacier feeds River Ganga?

Gangotri glacier

What is the effect of floods on houses?

Destruction of property

Why is water pollution dangerous?

It spreads diseases

Which city in India faces water crisis every summer?

Chennai

Why is water scarce in urban areas?

Overpopulation

What should be avoided to prevent wastage?

Leaking taps

Which human activity reduces groundwater recharge?

Concreting roads

Which waterborne disease is common in slums?

Diarrhoea

Which state has the highest fluoride in water?

Rajasthan

What is the solution to water scarcity?

Rainwater harvesting

What is the slogan for water conservation?

Save Water, Save Life

Which campaign is launched for water saving in India?

Jal Shakti Abhiyan

Which modern project connects rivers?

Interlinking of rivers

What is the purpose of river interlinking?

Transfer water from surplus to deficit areas

Which practice can revive old tanks?

Kudimaramathu

What do recharge wells help in?

Raising water table

Which tree plantation helps increase rainfall?

Afforestation

Which method can recycle waste water?

Treatment plants

What is drip irrigation?

Watering plants drop by drop

What is sprinkler irrigation?

Spraying water like rain

Which irrigation saves maximum water?

Drip irrigation