Classroom visuals
-
![Crashing Waves]()
Crashing Waves
-
![Shoreline]()
Shoreline
-
![Ocean Wave]()
Ocean Wave
-
![Surfer]()
Surfer
-
![Landforms]()
Landforms
-
![Yosemite National Park]()
Yosemite National Park
-
![Melting Glacier]()
Melting Glacier
-
![Walking on Snow]()
Walking on Snow
-
![Freeze-thaw Weathering]()
Freeze-thaw Weathering
-
![Glacier on Mt Rainier]()
Glacier on Mt Rainier
-
![V-shaped Valley]()
V-shaped Valley
-
![Weir]()
Weir
-
![Waterfall]()
Waterfall
-
![Meanders]()
Meanders
-
![Flood Plain]()
Flood Plain
-
Freeze-thaw Weathering (labelled)
-
Freeze-thaw Weathering (unlabelled)
-
Mechanical Weathering (labelled)
-
Mechanical Weathering (unlabelled)
Film info
Film summary
The physical, biological or chemical factors that erode rock, from sand to ice, rain to plants, and even footsteps.Key facts
- "Weathering" refers to the breakdown of rocks into smaller pieces.
- Physical weathering occurs as wind, water and smaller rock particles scour exposed rock surfaces.
- Chemical weathering occurs as a result of weak acid in the atmosphere and rainfall reacting with rock forms.
- Biological weathering is caused by living creatures, e.g. plant roots, barnacles and sea urchins all bore into rocky surfaces.
Transcript
Rocks are tough – but nature is tougher.
In time, all exposed rock is worn away by wind, water, and other natural forces.
The results can be extraordinary.
We call the removal of rocky material erosion.
Erosion
Whereas weathering refers to the breakdown of rocks into smaller pieces.
Weathering is caused by physical, …
Please log in to view and download the complete transcript.
