Categorieën: Alle - rivers - flooding - drainage - distribution

door Elise Low 15 jaren geleden

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Water on Earth

Rivers play a crucial role in shaping the Earth's landscape and significantly impact human life. They originate from a source and flow towards a river mouth, where they empty into larger bodies of water such as lakes or seas.

Water on Earth

Water on Earth

How Rivers affect people

Negative
Flooding
Positive
Means of transport
Production of hydroelectric power
Source of drinking water and food
Recreation and tourism
Water supply for industry
Fertile soil for farming
Water supply for farming

Features formed by Rivers

Deltas
Formed where layers of sediment are deposited at the river mouth over time
Floodplains
A low-laying land that becomes flooded when a river overflows its banks
Meanders
A bend or curve in a river
Waterfalls
A vertical flow of fast-moving water falling from a great height
Valleys
A low area between hills or mountains

The Drainage Basin

Watershed
the area that is drained by a river and its tributaries is called the drainage basin
Drainage Basin
he boundary of a drainage basin is marked by the tops of the surrounding highland

The River system

River mouth
The end of the river wehn it flows into a lake or sea
Tributaries
the streams and rivers that join a main river
River source
The place at which a river begins

The Hydrologic Cycle

4. Runoff / Groundwater
3. Rainfall
2. Condensation
1. Evaporation / Transpiration
Also known as water cycle

Distribution of Water

3% fresh water
1% found in streams/lakes/rivers
29% found underground
70% is frozen
97% salt water