Chapter 2: Journey of a River Long Questions | Environmental Science - EVS Class 5 CBSE

ByteNotes

Chapter 2: Journey of a River Long Questions | Environmental Science - EVS Class 5 CBSE | ByteNotes.in

Long Answer

Medium difficulty • Structured explanation

Medium

Question 1

Long Form

Describe the complete journey of the river Godavari from its source to the sea.

The Godavari begins its journey as a small stream at Trimbakeshwar in the Western Ghats of Maharashtra.
As it flows across the land for 1,465 kilometres, many small streams called tributaries join it to make it stronger.
It passes through several Indian states, including Maharashtra, Telangana, and Andhra Pradesh, providing water along the way.
Because it is sacred and flows through the south, it is often called the Dakshina Ganga by the people.
Finally, it reaches the Bay of Bengal, where it spreads out into a delta and forms the Coringa Mangrove Forests.

ByteNotes

Long Answer

Medium difficulty • Structured explanation

Medium

Question 2

Long Form

Explain the various ways that a river supports human lives and communities every day.

Rivers provide essential water for basic household needs like drinking, cooking, and washing for millions of people.
They are vital for agriculture, as water is carried through canals to irrigate fields where food crops are grown.
Industries and factories rely on river water to manufacture products that we use in our daily lives.
Rivers support livelihoods by providing fish for food and supporting ecotourism in scenic natural areas.
A great example is how the Godavari provides water to many towns and villages through long networks of pipes.

ByteNotes

Long Answer

Hard difficulty • Structured explanation

Hard

Question 3

Long Form

Discuss both the benefits and the negative impacts of building dams on a river.

Dams are helpful because they store water in reservoirs for use during dry seasons to grow crops and drink.
They also help generate electricity, which is needed to power our homes, schools, and various machines.
However, building a dam blocks the natural flow of the river and can flood large areas of land.
This flooding often destroys the homes of animals and forces many people to leave their ancestral land and shift.
For example, when a dam is built, forests and villages near the river may be completely covered by the new reservoir.

ByteNotes

Long Answer

Medium difficulty • Structured explanation

Medium

Question 4

Long Form

Detail the different types of pollution that affect rivers and why they are harmful.

Waste and plastic thrown into the river by people make the water look dirty and smell very bad.
Factories often release harmful chemicals and dirty water into rivers, which can make people and animals sick.
Soapy water from washing clothes or floors can hide in the water and hurt living beings even if it looks clean.
Fertilizers from farms cause plants to grow too fast, creating a green blanket that chokes all life in the river.
An example from the text is how fish and turtles begin to disappear because their home is becoming polluted and unsafe.

ByteNotes

Long Answer

Medium difficulty • Structured explanation

Medium

Question 5

Long Form

Describe what happens during a flood and what safety measures people should take.

During heavy rains, a river becomes faster and deeper, eventually overflowing its banks and flooding houses and roads.
Floods cause massive destruction to crops and property and can lead to the spread of dangerous diseases.
People should stay informed through the local news and prepare an emergency bag with food and medicines.
It is important to disconnect electricity and gas and evacuate to higher ground before the flooding starts.
An important safety tip is to never walk or drive through floodwater, as it can be very powerful and dangerous.

ByteNotes

Long Answer

Hard difficulty • Structured explanation

Hard

Question 6

Long Form

Explain the importance of forests and trees in managing the water of a river.

Rich forests near rivers are home to many wild animals like tigers and deer that depend on the water.
Trees play a crucial role in the water cycle by slowing down the movement of rainwater across the land.
Their roots hold the soil together and help it soak up water, which prevents sudden and massive flooding.
When trees are cut down, water runs off the land much faster, making floods more likely and more destructive.
A clear example is how the Godavari passes through forests full of red sandalwood trees and diverse wildlife.

ByteNotes

Long Answer

Medium difficulty • Structured explanation

Medium

Question 7

Long Form

Discuss the problem of water scarcity and how different cities have managed it.

When a river or reservoir runs dry, it causes major problems for people who have no water for their basic needs.
In some cases, families are forced to leave their homes and move to places where water is still available.
In 2019, the city of Chennai had to use special water trains to bring water from other districts.
This happened because their local reservoirs had completely dried up, leaving the city without enough water.
Managing water wisely through missions and saving every drop is essential to prevent such extreme situations.

ByteNotes

Long Answer

Easy difficulty • Structured explanation

Easy

Question 8

Long Form

Outline the steps children can take in their daily lives to help save and protect water.

Children can help by using water very efficiently at home and making sure they never waste it unnecessarily.
Turning off the tap while brushing teeth or soaping hands can save many liters of water every single day.
Leftover water from washing fruits or vegetables can be reused to water the plants in the house.
It is important to remind family and friends about the importance of saving water and fixing any leaking taps.
A simple action like not throwing waste or plastic into ponds or rivers helps keep our water bodies clean.

ByteNotes

Long Answer

Hard difficulty • Structured explanation

Hard

Question 9

Long Form

Explain the phenomenon of the 'green blanket' on rivers and its impact on the ecosystem.

Sometimes fertilizers used in farming get washed away by rain and end up in the river water.
These fertilizers act as food for tiny plants and other organisms, making them grow at an incredibly fast rate.
Soon, these plants cover the entire surface of the river, looking like a thick green blanket from above.
This blanket prevents air and light from reaching the water below, which slowly chokes the life inside.
For example, fish find it very hard to breathe in such conditions, and the water becomes unsafe for people.

ByteNotes

Long Answer

Hard difficulty • Structured explanation

Hard

Question 10

Long Form

Describe the unique characteristics of the wildlife and plants found in the Godavari delta.

The Godavari delta is home to the Coringa Mangrove Forests, where the river meets the salty sea water.
Mangrove trees are special because they can grow in areas where fresh and salt water mix together.
This area is a safe haven for many animals, including crocodiles and various species of colorful birds.
The delta provides plenty of food and shelter, making it a very important area for biodiversity in the region.
An example of the life found here includes turtles and flamingos that enjoy the unique habitat of the mangroves.

ByteNotes

Premium Access

Unlock all Long Questions

You are viewing 10 free long questions from this chapter. Upgrade to Premium to unlock the remaining 10 questions.

Upgrade to Premium10 questions locked

Chapter sections

Chapter 2: Journey of a River | Long Questions

Describe the complete journey of the river Godavari from its source to the sea.

Explain the various ways that a river supports human lives and communities every day.

Discuss both the benefits and the negative impacts of building dams on a river.

Detail the different types of pollution that affect rivers and why they are harmful.

Describe what happens during a flood and what safety measures people should take.

Explain the importance of forests and trees in managing the water of a river.

Discuss the problem of water scarcity and how different cities have managed it.

Outline the steps children can take in their daily lives to help save and protect water.

Explain the phenomenon of the 'green blanket' on rivers and its impact on the ecosystem.

Describe the unique characteristics of the wildlife and plants found in the Godavari delta.

Unlock all Long Questions