4.2 Physical And Human Processes Shape The Land Flashcards
Compare the weathering that is found in the uplands and lowlands
In the uplands, land is more subject to freeze thaw weathering, whereas in the lowlands, land is more subject to biological and chemical weathering.
Compare the soil/rock movement processes in the uplands and lowlands
Soil creep occurs in the uplands, where the sheer weight of the soil on the hill moves it downwards. Dry valleys occur in the lowlands, where previously saturated rock becomes permeable.
Compare misfit rivers and dry valleys (location, characteristics, formation)
Misfit rivers are rivers that couldn’t possibly of eroded the valley that it sits in. They are situated in the uplands, and are formed by glaciation. Dry valleys are the remains of what used to be rivers, when the climate was colder. Ice filled gaps in the rock, making it permeable and allowing water to flow over the top. However, when the ice melted, instead the water passed through the rock, meaning that there was no longer a river in that position.
Explain how glaciers have affected both landscapes
Glaciers have effected the uplands by the formation of U shaped valleys, in what used to be V shaped valleys. They have effected the lowlands by Creating dry valleys.
Explain 2 ways humans have affected the Upland landscape
- Sheep: Sheep graze the landscape, meaning that no trees can grow.
- Walls: Humans put walls up to keep their animals in a certain area, but this stops natural processes like surface runoff.
Explain 2 ways humans have affected the Lowland landscape
- Built towns and Cities - a lot more concrete on the land than there used to be.
- Made irrigational channels - Disrupted the transportation of sedimentary rocks downstream.
Compare which landscape (up/low) have been affected more by humans.
Uplands have been effected more by humans, as if humans didn’t let their sheep graze on the land, it would be a completely different biome.
