Weathering Flashcards
What is weathering
Weathering is wearing away and break down of rocks due to activities like temperature changes, chemical reactions or interference from living things.
What are the types of weathering
Physical Weathering
Biological Weathering
Chemical Weathering
What is another name for physical weathering
Mechanical Weathering
What is biological weathering
Biological weathering is the wearing away and breakdown of rocks due to activities from plants and animals
What is abrasion
Abrasion is when an agent of erosion like water or wind uses particles such as rocks or pebbles in the breakage of other surfaces through consistent contact.
What is the difference between weathering and erosion
Weathering is the wearing away and break down rocks and other materials in one area while erosion involves the wearing away and transportation of rocks
What is another name for freeze - thawing
Frost shuttering
What is another name for solution
Corrosion
What is physical weathering
Physical weathering is the wearing away and breakdown of rocks through physical processes such as wind ,rain, waves nd extreme changes in temperature.
What is chemical weathering
Chemical weathering involves changing rocks through reactions like oxygen exposure and acids, It makes the rocks dissolve, break down, or change into different minerals.
What is erosion
Erosion involves wearing away and removal of loose materials, such as rocks through agents of erosion like water, wind, or ice.
What is another name for abrasion
Corrasion
What are some types of erosion
- Abrasion
- Attrition
- Hydraulic Action
- Solution
What is solution
Solution is when rocks dissolves in water. Some examples of the rocks are limestone, chalk and dolomite.
What is attrition
This is when rocks are moved by agents of erosion like water or wind and experience constant contact with the sea bed. the banks and other rocks and causing each of them to wear away.
How are v shaped valleys formed?
The river erodes downward, bouncing boulders and rocks along the bed. As it cuts down, weathering attacks the steep sides, breaking up soil and loosening rock. The loosened material creeps down due to gravity or is washed into the river by rain. The river carries it away, forming a V-shaped valley.
Factors affecting weathering
1.Climate affects the rate of weathering.
2. The mineralogical constitution of rock affects the rate of disintegration or alteration.
3. The rock’s texture also determines the type of weathering which takes place.
What is transportation
Transportation is the movement of the eroded materials(load) from one place to another. These loads are saltation load, solution load, suspension load, traction load.
State and explain the types of load
1.saltation load = this is when small pebbles or stones are bounced along the river bed),
2.solution load (this is when the materials dissolved and carried in solution).
3. suspension load = it is when the small materials are carried on the surface of the waterbody.Eg is the colour.
4. traction load = this is when the large loads are rolled along the river due to more energy from the flowing water).
What is deposition
It is when the flowing water loses it energy, hence it’s unable to carry the material and the material settles there.
What is a river?
It is a moving body of water that flows from source into another body of water such as sea, ocean , lake . It flows along a channel with banks on both sides and a bed at the bottom. It receives water from precipitation.
What is Lateral Erosion
Lateral erosion is when the river erodes its banks causing the channels to widen.
What type of erosion occurs at the lowercourse of a river
Lateral Erosion
What type of erosion occurs at the uppercourse of a river
Vertical Erosion
What are the three types of courses in a river
- Uppercourse
- Lowercourse
- Middle Course
What is Vertical Erosion
This is the downwards erosion that makes the river bed deeper.
What is an estuary
An estuary is the area around the mouth of a smaller water body where the small water body empties itself into a larger water body
What is a headland
A headland is a part of the coastline that juts out into the sea and usually ends in a cliff. It appears this way because the surrounding soft rock wore away leaving the headland, which is the hard Rock to stay there
What is a backwash
This is when the waves of the sea move away or recede from the shore
What is a swash
A swash is when the waves move towards and sometimes onto the shore
