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Published byPerry Rookard
Modified over 2 years ago
Lesson 8 – page 7
To learn what a meander is. To learn how meanders form. To learn how an ox-bow lake forms. Key Skill = Communication
Water flows faster on the outside of bends. Abrasion and hydraulic action causes erosion. This causes undercutting of the bank. This causes a steep river cliff.
Water flows slower on the inside of bends. The river deposits its load. This results in a gentle bank of sand and gravel. This is called a point bar.
Point Bar River Cliff
River Taff - Cilfynydd River Cliff Point Bar Water Works
Draw a labelled sketch to show a meander. How does a river cliff form? How does a point bar form?
Draw a labelled sketch to show a meander cross-section. Label where it will be deeper and why. Label where it will be shallower and why. Activity
Ox-bow Lakes Meanders become more extreme. This creates a narrow neck of land. Fast current erodes the neck cutting off the meander. Meander is sealed off by deposition to create an ox-bow lake.
Draw an annotated sketch to show how sn ox-bow lake forms.
Middle River Stage: River landforms in Lowland Area.
© Boardworks Ltd of 42 The River Conwy has deposited material in this section of its course. Suggest reasons why this has happened.
© Boardworks Ltd of 34 River landforms in the Middle and Lower course Aim: To understand how meanders form in the middle section and ox bow lakes,
What landforms and features are associated with the middle course of a river? LO: To investigate how meanders and ox-bow lakes.
Oxbow Lakes By Cara. What is an Oxbow Lake? An oxbow lake is a crescent shaped lake lying beside the middle course of a river. It is formed when a bend.
1 River features? Are facial features the same thing for rivers?
What is the long river profile? The gradient is less steep than in the upper course. The valley gets wider and flatter. Erosion is more lateral (or.
River valley deposition: levee formation Gentle valley side River flowing above height of floodplain Flat floodplain Gentle valley side Layers of silt.
Landforms in the Lower Course Meanders and Ox-bow Lakes.
Aim: To develop a knowledge and understanding of Rivers in the landscape By the end of the lesson I should know: New terminology for important parts of.
The Middle and Lower Course of a River Starter: 1.Draw a simple diagram of the river cross section at the following areas: Upper course Middle course 2.Now.
Stages of a River Stage:Upper Course 1. Source Waterfall 3. V-shaped valley 4. Steep sided valley 5. Interlocking spur.
THE MIDDLE COURSE. In the middle course, rivers aren’t as high above sea level as they are in the upper course. There is more energy because the discharge.
WHAT CAN YOU REMEMBER? land ocean 4) _________ 5) __________ 1) ________ 2) _________ 3) _________ 6) ________.
TRACTION SALTATION SUSPENSION SOLUTION Particles of rock are dissolved in the water and carried along without being seen. Large boulders and rocks are.
Water Erosion Can Cause the Formation of New Landforms.
Rivers: Profiles & Landforms Higher Geography The Hydrosphere.
The lower course of the river LO: I can describe and explain he formation of ox bow lakes. I can describe and explain he formation of flood plains. I can.
R IVERS Research Review. F ACTORS THAT A FFECT R IVER V OLUME Size of Drainage Basin large drainage basin= several tributaries= more volume Vegetation.
Vincent Raeburn Linlithgow Academy Malcolm McDonald Bathgate Academy Linlithgow Academy.
Recap Rivers Rivers work hard. They are always E________ and moving this material downstream (T __________). Rivers are eroding down the way and across.
A meander is a turning or winding of a stream Incised meanders of Dolores River, Colorado.
Journal #4 Why are river system constantly changing? The narrow depression that a stream follows downhill is called its _________. What causes the formation.
© Boardworks Ltd of 34 These icons indicate that teachers notes or useful web addresses are available in the Notes Page. This icon indicates the.
River Systems Section 2 Section 2: Stream Erosion Preview Key Ideas Parts of a River System Channel Erosion Development of River Channels Tributary, River.
Water, Landforms and People Bingo. Pick any nine of these words and write them in your grid. Deposition Flood Deposition Flood Discharge Hydrograph Discharge.
Erosional and depositional river landscapes LS: Apply knowledge of Erosional processes to understand how erosion forms river landscapes. Describe the formation.
Rivers. Long Profile Height above sea level in meters Distance from sea in Kms. Source. Upland stream. Lowland.
A river system is made up of a main stream and tributaries – Tributary: a stream that flows into a lake or into a larger stream.
Topic 6 – Running Water. 1.How does running water weather rock? a)Lifting – fast-moving water pushes into cracks, lifting off rock pieces b)Abrasion –
Rivers Location Profiles Processes Landforms Thames Spey Clyde Shannon Tees Ouse Tay Severn Trent Forth Main UK.
The streams found in mountains are likely to have formed relatively recently.
The River Course Features of the Upper Course Potholes Waterfalls Rapids Features of the Middle Course Flood Plain Meanders Features of the Lower Course.
Stream Erosion and Transport Erosion: Hydraulic action – erosion caused by the movement of water against stream sediment Abrasion – erosion caused by particles.
RIVERS. A meander is a turning or winding of a stream Incised meanders of Dolores River, Colorado.
Unit 1.3B_4 River Landforms. Now you know a bout the processes that enable the river to change What does the river look like?
Erosion The transport of earth materials from one place to another. AGENTS –Running water (MOST ACTIVE AGENT) –Moving air (Wind) –Glaciers FORCE driving.
Weathering and Erosion. MOVING WATER What do we call the movement of water? –Water Cycle (I hope you didn’t forget) How do you think the water cycle causes.
R IVER I NVESTIGATION – THE T HEORY !. W HAT IS A D RAINAGE B ASIN ? A drainage basin is an area of land drained by a river and its tributaries. Its boundary.
Fluvial Landforms – Middle course of river River Channel: wider and deeper Volume of water greater than that in upper course. Gradient is less than.
River landscapes and processes Geography CCEA GCSE 2009.
Key terms. CHECKLISTS Let’s see what we have managed to cover this half term.
PHYSICAL GEOGRAPHY GEOMORPHOLOGY SECTION RIVERS UNIT Geomorphology and Basin characteristics.
AIM: What is a stream/river? Do Now: Answer the following questions in your notebooks. Where does the water come from that fills streams and rivers? Where.
The map below shows a meandering river. Points A and B are locations on the banks of the river. What are the dominant processes occurring at locations.
How Do Rivers Change the Land? Running water is a major factor in changing the surface of Earth.
AIM: What are the parts of a stream/river? Do Now: 1) Take out your ESRT and turn to page 6. 2) On the chart in the upper right, describe what velocity.
Characteristics of Straight, Meandering, and Braided Channels.
Running Water & Groundwater Chapter 6 (sec. 1 & 2 only) 200.
Stream Erosion & Deposition Chapter 6 sections 1 and 2.
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