Geography 13012021 Rivers What do you know about

Geography 13/01/2021

Rivers • What do you know about rivers already? • Do you know the names of any rivers? • How are they formed? • Task 1: to get going, watch the videos and read the article below • https: //www. bbc. co. uk/bitesize/topics/z 849 q 6 f/articles/z 7 w 8 pg 8

Rivers • Lesson objective: Can I describe the journey of a river? • You can do this through a labelled diagram or through a story, or both • Read the following powerpoint slides and make notes as you go on the key information

Lesson One: Journey of a River

Asking Geographical Questions Wellesley College, Leica M 8 and Voigtlander 15 f/4. 5 LTM lens © Soe Lin, Flickr A stream at Fual Pani I © Wikipedia Commons Humber Bridge © Alex Liivet, Flickr

The Upper Course Peru - Cusco Sacred Valley & Incan Ruins 153 - steep-sided Urubama valley © Mc. Kay Savage The first stage of a river, often located on high ground Little Luckiamute River © Ian Sane, Flickr

High Force Waterfall The River Tees High Force Waterfall © Lincoln Eye, Flickr

The Middle Course Cuckmere Meander © Dave Moyes, Flickr Second stage of a river: the land here is flatter and the river wider Thames Path © Gabriella Szekely, Flickr

Erosion and Deposition View from above Erosion is the cutting away of material from the river banks (sides) and river bed (bottom). Deposition is the leaving behind of this material when the river cannot carry it any more. Cross section Anna Brace

Oxbow Lakes © Molly Stevens, Flickr Meandering River through the flat fields of Northwest Scotland © Ben-Benjamin

The Formation of Oxbow Lakes 1) 2) 1) The river meanders. 2) With continued erosion and deposition, the meander becomes more pronounced. 3) 4) 3) The river takes a straighter more efficient course. Anna Brace 4) The loop is abandoned an oxbow lake is formed. Eventually the oxbow lake will dry out.

A river`s end? • Where does a river end? • Smaller streams join a bigger river, which then make their journey to the sea or ocean. • Where a river meets the sea or ocean, it is called an estuary • The end of a river`s journey is its mouth

The Thames Estuary Where is the River Thames? Thames Estuary © Quietloner, Flickr

Journey of a River Could you draw a diagram, or even make a model like this one, to show a river`s journey?

Your tasks • Draw a labelled diagram of the river`s journey from its source to its mouth. • You will need to include some of the words on the following page:

River vocabulary

Extension tasks • Imagine you are the first drop of rain into a river. Tell your story from here to the river`s mouth! • Find out the longest rivers in the world. Their names, countries, oceans they flow into? • Research the River Worth. Where does this flow?