av Elise Low 15 år siden
602
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.
Åpne
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
