How does land form? Flashcards
What is Erosion?
Erosion is the removal of parts of the land’s surface and it is caused by rivers, winds, waters and ice.
What is Hydraulic Action?
Hydraulic Action is the force of water against a rock’s surface causing air to be trapped in the cracks.The pressure weakens the rock and gradually wears it away.
What is Abrasion?
Abrasion is when stones and rocks are threw against the rock’s surface.They scrape a long a rock’s surface, this action is like sandpaper.
What is Attrition?
Attrition is when rocks and stones knock together and wear each other away.
What is Solution?
Solution is when water dissolves a surface of a rock.
What is Weathering?
Weathering is the slow breaking down of rocks on the Earth’s surface.|t is caused by weather conditions such as rain or changes in temperature and sometimes plants and animals.
What is Biological Weathering?
Biological Weathering is burrowing. Animals such as rabbits burrow into cracks in rocks, this makes bigger splits in the rock.Plant roots can grow in the rocks too opening the rock.
What is Chemical Weathering?
Rainwater can be acidic because carbon dioxide from the air dissolves in it. Minerals in rocks may react with the rainwater, causing the rock to be weathered. This is Chemical Weathering.
What is Mechanical/Physical Weathering?
Mechanical/Physical Weathering is when water gets into cracks of rocks and then freezes, it then expands and pushes the rock further a part. When the ice melts, water goes further into the crack. The process repeats. This is called freeze-thaw weathering.
