Class 5 Evs - BIHAR
Journey of a River
The chapter 'Journey of a River' in the Class 5 EVS textbook 'Our Wondrous World' takes students on an exciting adventure of a river from its origin high up in the mountains to its final destination in the sea. Students will learn about how a river is born from melting snow or rain, flows down through valleys and plains, and the various changes it undergoes along the way. This chapter is very important for Bihar Board (BSEB) exams as it builds foundational geographical and environmental awareness, teaching children about water sources, pollution, and the importance of keeping our rivers clean.
Start Learning FreeKey Concepts
Origin (Source)
The place where a river begins, usually high up in the mountains or hills from melting glaciers or heavy rainfall.
Course of a River
The path that a river takes as it flows from the mountains, through plains, and finally into a large water body.
Tributary
A smaller stream or river that flows into and joins a larger main river.
Delta
A triangle-shaped piece of land formed at the mouth of a river where it deposits mud, sand, and pebbles before entering the sea.
River Pollution
The contamination of river water caused by human activities like washing clothes, bathing cattle, and dumping factory waste and garbage.
Important Formulas
Board Exam Info
This chapter typically carries around 5 to 8 marks in the Bihar (BSEB) Class 5 EVS examinations. Common question types include short-answer questions about the stages of a river, fill-in-the-blanks regarding river terms like tributaries and deltas, and descriptive questions on how to prevent river pollution.
Frequently Asked Questions
Where does a river usually start its journey?
A river usually starts in high mountains or hills from melting snow, glaciers, or rain.
What is the difference between a tributary and a delta?
A tributary is a small river that joins a big river, whereas a delta is the flat, triangle-shaped land formed at the mouth of a river just before it meets the sea.
Why are rivers getting polluted?
Rivers are getting polluted due to human activities such as throwing garbage, washing clothes, releasing factory chemicals, and bathing animals in the water.
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