WEATHERING AND EROSION || SCIENCE VIDEO FOR KIDS

THIS VIDEO EXPLAIN ABOUT WEATHERING AND EROSION. IT IS EASY TO UNDERSTAND FOR KIDS AND CHILDREN OF ALL GRADES.
Weathering and erosion, both important parts of the rock cycle.
Weathering is one of the forces on Earth that destroy rocks and land forms.
Weathering is the process where rock is dissolved, worn away or broken down into smaller and smaller pieces.
Erosion happens when rocks and soil are picked up and moved to another place by ice, water, wind or gravity.
There are physical, chemical and organic weathering processes.
Physical weathering breaks down a rock's physical structure.
For example, in cold environments water that gets into holes in rock and freezes will cause those holes to expand and eventually crack and split the rock and break down into smaller and smaller pieces.
when water flows on rocks or falls as rain on rocks , water rubs the rocks and causes weathering.
another cause of weathering is wind. wind carries lot of dust and particles. when this rub with the rocks , it smooth their surface ,
which causes weathering.
Chemical weathering changes the chemical structure of rock, causing it to become softer or more brittle. acid rain may cause chemical weathering.
organic weathering also known as biological weathering . organic weathering occurs when fungi and bacteria decompose rock.
Biological Weathering occurs on rocks due to plants, animals,and micro-organisms like fungi and algae.

erosion :
Once the rock has been weakened and broken up by weathering it is ready for erosion.
Water , wind , ice and gravity can causes erosion.
Rivers wear down and carry away rock and soil along their banks.
erosion occurs in the ocean, where moving water and waves degrade and carry away particles of coastline rock.
Wind erosion can only occur on smaller particles of ash, dust and rock, but it can still move large quantities of these particles from their original locations and create impressive
formations, such as sand dunes.
but ice can move much larger rocks than most other erosive forces. Erosion by ice is rare in most parts of the world.
Mass wasting is a specific type of erosion that is caused by gravity.
It occurs when soil or rocks are carried away, by falling or sliding downwards.
A rockslide or landslide is a common example of mass wasting, as a large quantity of loose rock or soil rolls or slides down a slope.
the Grand Canyon in Arizona and the Natural Bridge in Virginia are landmark examples of erosion.
the best ways that we can prevent erosion is to plant vegetation with deep roots that help to hold the soil in place. This is especially
important in areas that are more vulnerable to erosion, such as along rivers, streams, and on hillsides.

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