Loading the lesson
Loading the lesson
Search AllRounder.ai
Search the courses, subjects, tracks, games and features, or jump straight to a page.
Search the courses, subjects, tracks, games and features, or jump straight to a page.
Learn it your way
A short class with Sarah and her students. The other ways are under More.
Sign up free to listen. Transcripts are free to read.
Today, we'll explore geomorphic processes. Can anyone tell me what geomorphic processes are?
I think they are the processes that shape the earth's surface.
That's right! They are the physical processes that affect the Earth's landforms. There are two main types: endogenic and exogenic. Remember this acronym: 'E' for Endogenic meaning 'internal' forces. Can anyone give me an example of an endogenic process?
Volcanism?
Exactly, volca-nation! That’s a solid mnemonic! And what about exogenic processes?
Weathering and erosion!
Great! So, we see endogenic processes build up, while exogenic processes break down. Let’s remember this by saying, 'E for Endogenic builds and E for Exogenic erodes.'
Now, let’s focus on endogenic processes. Who can remind us what they include?
Diastrophism and volcanism!
Correct! Diastrophism, which includes orogenic and epeirogenic processes, is all about building landforms. Can anyone explain what orogenic processes are?
They involve mountain building.
Perfect! Orogeny creates mountains while epeirogeny causes uplift or warping of larger areas. Let’s stick to the acronym ‘O’ for Orogeny, which we can remember as ‘O is for Mountains’.
What about volcanism?
Good question! Volcanism contributes to landforms through eruptions. Visualize volcanoes erupting lava, shaping the landscape. ‘V’ for Volcanism – think ‘V for Volcano!’
Let’s turn our attention to exogenic processes. Can someone explain what weathering means?
It’s the breaking down of rocks.
Exactly! Weathering prepares materials for erosion. Think of it this way: 'Weathering works in place before erosion takes it away.' Can anyone tell me what the three types of weathering are?
Chemical, physical, and biological!
Wonderful job! Remember the mnemonic ‘C-P-B’, where C is for Chemical, P for Physical, and B for Biological. Now, how does erosion differ from weathering?
Erosion actually moves the materials to a new location.
Spot on! Erosion is the final act after weathering's preparation. Let’s encapsulate this with the phrase: ‘Erosion is the journey – Weathering gets it ready!’
Endogenic builds like mountains tall, Exogenic erodes, shrinking it all.
Once, the Earth was flat until forces like volcanism and tectonics lifted it to create mountains. Over time, water and wind chipped away at the peaks, making valleys.
CPB for Weathering types: 'C' for Chemical, 'P' for Physical, 'B' for Biological.
E for Endogenic (internal), E for Exogenic (external). These two processes shape our land!
Term
Endogenic processes
Click to flip
Term
Weathering
Click to flip
Term
Erosion
Click to flip
Processes that shape the Earth's surface through internal and external forces.
Internal processes that build and elevate the Earth's crust.
External processes that wear down and erode the Earth's surface.
The breakdown of rocks through chemical, physical, or biological means.
The removal and transportation of weathered materials from one location to another.
This section outlines the major geomorphic processes shaping the Earth's surface, emphasizing the distinction between endogenic and exogenic forces.
Geomorphic processes involve both internal (endogenic) and external (exogenic) factors that shape the Earth's surface. Endogenic forces like volcanism and tectonics build up land features, while exogenic forces like erosion and weathering gradually wear them down.
Geomorphic processes refer to the dynamic actions that alter the Earth's surface, driven by both internal (endogenic) and external (exogenic) forces. These processes are crucial in creating and modifying various landforms. Endogenic processes, such as diastrophism and volcanism, derive power from the Earth's internal energy, while exogenic processes, including weathering, erosion, and deposition, are primarily influenced by solar energy and atmospheric conditions.
The distinction between these processes lies in their roles; endogenic forces build landforms, whereas exogenic forces wear them down. The continuous interaction between these forces results in the varied topography of the Earth, affecting not only landscapes but also ecosystems and human activities. A significant aspect of geomorphic processes is their influence on soil formation and geomorphic agents like water, ice, and wind, which, through weathering and erosion, transport materials across the landscape.