Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Do you really want to delete this prezi?
Neither you, nor the coeditors you shared it with will be able to recover it again.
Make your likes visible on Facebook?
Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.
Transcript of Rivers
-boulders and pebbles. -large particles are lifted and dropped back down as they are carried by the river.
-gravel and sand. -fine particles are transported along the river without any contact with the river bed.
-clay, silt and fine sand. -dissolved materials (that cannot be seen by the naked eye) are carried in the water.
-calcium and sodium. RIVERS LONG PROFILE -where the river dumps some of it's load.
-the larger material is deposited first.
-occurs where the water is slower or shallower. RIVERS Erosion is where a surface of earth is worn away by the action of water, glaciers, winds, waves, etc.
-Near to the source of a river, there is a lot of downward erosion. -erodes the earth by the force of the water hitting the river bed and banks.
-most effective where there is lots of water and the water is moving
fast. -when the load that the river is carrying constantly hits the river bed and banks, causing pieces to break off. -when the stones and boulders the river is carrying knock against each other repeatedly - over time weakening, pieces starting to fall off. -when the water dissolves certain rocks like chalk and limestone, because they are soluble in water. A river's long profile shows it's course from it's source to it's mouth. Source Mouth -the source of a river is where the river starts.
-it is often an upland area. -a river mouth is where the river flows into an ocean, sea, estuary, lake or reservoir. -at the mouth of a river, a delta can form. Springs -some rivers start where a natural spring releases water from the ground. Rainfall and Melting Snow -in mountains or hills, rainwater or snowmelt collects and can form small channels that become the source of a river. Lakes -lakes are also the source of some rivers. Bogs -if the ground is too wet, rain water cannot sink into it and the result is a bog.
-water can flow out of a bog and form a lake or a stream.