Rivers are natural watercourses that flow towards the sea or a lake. They are formed by the accumulation of water from rainfall, snowmelt, and underground springs. Rivers are an essential part of the earth’s ecosystem, providing habitats for various plants and animals.

Some key facts about rivers that Year 4 students should know include:

1. Rivers can be long or short, wide or narrow, shallow or deep.

2. The longest river in the world is the Nile, which is over 4,000 miles long.

3. Rivers can be found on every continent, and they play a vital role in shaping the landscape.

4. Rivers can be used for transportation, irrigation, and generating electricity.

5. The water in rivers is constantly moving, and this movement creates energy that can be harnessed to generate electricity.

6. Rivers can be polluted by human activities such as dumping waste and chemicals into the water.

7. Rivers can flood when there is too much water, causing damage to homes and businesses.

8. Rivers are home to a variety of fish, birds, and other wildlife.

9. Rivers can be used for recreational activities such as fishing, boating, and swimming.

10. Rivers are an important source of freshwater for people and animals.