🌄 Unit 2: We look after water 🌉
Vocabulary:
1. Salt water 10. Upper course
2. Fresh water 11. Middle course
3. Waves 12. Lower course
4. Tides 13. Meanders
5. Marine pollution 14. Source
6. Tributary 15. Aquifer
7. Channel 16. Filtration
8. Flow
9. Reservoirs
1.) What are the oceans and seas like?
Oceans and seas are large bodies of salt water. Oceans and seas are in constant motion caused by waves and tides.
a) Waves
Benefits from oceans and seas.
People obtain many benefits from oceans and seas.
1. We obtain food by fishing.
2. We extract products like salt.
3. We extract petroleum.
4. We transport people and goods by sea.
5. We obtain energy.
6. We do many leisure activities in seas, like snorkelling.
2.) What are rivers like?
A river is a large, flowing body of fresh water
A tributary is a river that flows into a large river
Channel: area of land that contains the flowing water of a river.
It chages in size as a river flows downhill.
It chages in size as a river flows downhill.
Flow: amount of water that a river carries. It changes with the seasons.
How does a river flow?
Rivers have different length, speed, flow and flow regime.
Where is the river mouth?
The course of a river is its path from the source to the river mouth. There are thre courses: upper, middle and lower.
Benefits from rivers.
People obtain many benefits from rivers.
1. Reservoirs.
2. Transport of people and goods.
3. Leisure activities (canoeing, swimming, diving and observing wildlife).
3. The course of a river.
4. Where else can we find fresh water on Earth?
Water pollution.
STUDY THE RIVER'S MAP FROM YOUR NOTEBOOK'S PHOTOCOPY.
