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Rivers and Streams

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RnD 1 Pangram

on 31 March 2016

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Transcript of Rivers and Streams

What is a river?
1. A river is a large flowing stream of water.
True or False!!
2. A river is a flowing, moving stream of water.

3. Usually a river feeds water into an ocean, lake, pond, or even another river.
4. Rivers normally contain freshwater.
Make a list of leisure activities you can do in a river.
What are rivers used for?
water skiing
boat trips
drinking water
as a source of food
transporting goods
transporting people
Longest rivers in the world​
Rivers begin at their source in higher ground such as mountains or hills, where rain water or melting snow collects and forms tiny streams.
Rivers eventually flow into a larger body of water, like an ocean, sea, or large lake. The end of the river is called the mouth.
Some slow rivers and streams are safe to swim in. Others have undercurrents or deep drop-offs that can make them dangerous.
Why Do Rivers Curve?
Why are rivers important
Important aspect of rivers are:
Variety of wildlife and fish

Why do rivers flood?
Why are dams built in rivers?
Low head Dams | Flood Control Dams | Navigational Dams | Hydroelectric Dams
The Amazon River: 6,400 km
Han River: 514 km
How can you cross a river?
Where do rivers begin?
And where do rivers end?
Watch the video and write down the answer.
They are designed to hold some water back in order to have deeper water above the dam.
The dam has control gates so that the amount of water passing through can be adjusted.
These dams were built to keep deep water above each dam so that the channel (deepest part of the river) is suitable for commercial boats.
These are usually higher dams that take advantage of the power created by water falling from above the dam to below the dam.

Watch the video and write down your answer.
Very high amounts of rain, snow melt, or both lead to floods.
Write a paragraph
Is it safe to swim in rivers and streams?
Lena: 4,400 Km
Yangtze River: 6,300 Km
Mississippi River: 6,275 Km
Yenisei River: 5,539 Km
Yellow River: 5,464 Km
Ob-Irtish River: 5,410 Km
Congo River: 4,700 km
Amur River: 4,444 Km
Where do you think these rivers are located.
Write the name of country you think they are located there.
Do you know how long the Han river is !?
The Nile River: 6650km
The Han River is a major river in Seoul and the fourth longest river on the Korean peninsula after the Amrok, Tuman, and Nakdong rivers.
About ........ percent of the Earth's surface is covered by water, and the oceans hold about 96.5 percent of all Earth's water.
How much water is there on, in, and above the Earth?
How to keep rivers clean
Never dump wastes into the river.
Don't pour household chemicals down the sink or flush them down the toilet.

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