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1. Wind erosion. If the rock is on a cliff-side, where the wind is very harsh and strong, then bits of rock can be forced off the wall, and if very bad, can cause things like landslides.
2. Water erosion. When rocks get caught in water such as a flowing river, they can either be carried along with the flow of the water or, if too heavy, can sink to the riverbed and the fast flowing water will slowly erode the rocks down. This is why rocks on the riverbed are often smooth.
3. Plants. If a seed falls into a crack in a rock, and there is soil in that crack, then often, the plant may grow, causing the crack to widen.
4. Freeze-thaw. In cold places, a crevice in a rock can fill with rainwater throughout the day, and if at night it gets so cold that the water freezes, the crevice will be forced to expand. Ten, the following day, if it's warm enough, the ice will melt, and the rock retract. This process continues day in, day out, until the rock gets so worn that it eventually breaks off.
Those are the 4 main causes of the break down of rocks, but there is also sea erosion, when the sea crashes against rock faces and slowly erodes them, 'onion-skin', which is caused by heat and dryness, and finally man, who sometimes erode rocks to use for themselves. I hope that this helps you.
What else can I help you with?
What type of rocks weather and erode to form sedimentary rocks?
Igneous, metamorphic, and existing sedimentary rocks can weather and erode to form sedimentary rocks. Igneous and metamorphic rocks can break down into sediments through processes like weathering and erosion, which then may accumulate and lithify into sedimentary rocks. Existing sedimentary rocks can also be reworked and lithified to form new sedimentary rocks through processes like compaction and cementation.
What are 3 processes that mechanically weather rocks?
Three processes that mechanically weather rocks are frost wedging (freeze-thaw cycles), exfoliation (physical weathering due to pressure release), and abrasion (erosion caused by frictional forces).
What does the following sentences mean Soils were once rocks?
This mean that rocks over a long period of time becomes. Through processes such as weather rocks are broken down into smaller and smaller peices and (through other processes) become soils.
Are all rocks sharp?
== == No, some rocks are quite dull from weathering processes.
What types of rocks weather?
All types of rocks can weather over time, but some may weather more easily than others. For example, sedimentary rocks like sandstone and limestone are more susceptible to weathering compared to igneous rocks like granite due to variations in their mineral composition and structure. However, even highly resistant rocks, if exposed to the elements long enough, will eventually break down through processes like mechanical weathering and chemical weathering.
What rock type is easiest to weather?
Sedimentary rocks like limestone and sandstone are generally easier to weather compared to igneous or metamorphic rocks. This is because sedimentary rocks are composed of smaller grains that are more prone to erosion and chemical weathering processes.
Do natural acids mechanically or chemically weather rocks?
Natural acids chemically weather rocks by reacting with minerals in the rock, causing them to break down. Mechanical weathering involves physical processes like freezing and thawing, which cause rocks to break apart without altering their chemical composition.
What are verbs that describes rocks?
Some verbs that describe rocks are: crumble, weather, erode, and shatter.
Which substance has the greatest effect on the rate at which rocks weather?
Water has the greatest effect on the rate at which rocks weather, as it can cause physical and chemical weathering processes to occur more rapidly. Water can dissolve minerals within rocks, increase their susceptibility to erosion, and facilitate the growth of vegetation that can further break down rocks.
Why are earthquakes tsunamis and volcanoes not weather?
Weather describes to processes, phenomena, and patterns that relate primarily to the atmosphere and chiefly involve air. Volcanoes, earthquakes, and tsunamis are the result of processes that come from within the earth and chiefly involve rocks and minerals.
Do rocks come from quarry?
Some rocks came from quarry, ergo not all rocks came from quarrying, rocks may came from different processes like sedimentation, there are also some rocks that came from volcanoes, these kind of rocks are called igneous rocks.
If there was no atmosphere or weather what rock type would you not find?
Without an atmosphere or weather, you would not find sedimentary rocks. Sedimentary rocks form from the accumulation and compaction of sediments, which are typically transported and deposited by wind, water, or ice—processes driven by atmospheric conditions. In the absence of these processes, rock formation would be limited to igneous and metamorphic types.
