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The breaking down of a Rock 'in situ' is known as Weathering. And when this Weathering takes place by Physical Change [ The Chemical Composition of Rock is not altered ] then it is known as 'Mechanical Weathering'.
Processes:It takes place by the following mechanisms:-
- Thermal Expansion
- Frost Disintegration
- Pressure Release
- Hydraulic Action
- Salt Crystal Growth
- Biological Weathering
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Is rock broken into small pieces a chemical change?
No actually it isn't. Breaking a bone is a physical change. Think about it. Are you changing it into a different substance. No you're not, so it's a physical change.
How does physical weathering cause chemical weathering to be more effective?
by helping each other by breaking down the minerals
When molten rock cools and hardens is a physical change or chemical change?
I think it is physical but I do know it is an igneous rock
When a sculptor uses a chisel on a rock the rock undergoes a what?
A physical change
When a sculptor uses a chisel on the rock the rock undergoes a?
A physical change
Mechanical, chemical, and biological weathering?
Mechanical- Physical breaking down of rock, wind and rainChemical- Breaking down of rock by substances. Acid rainBiological- Breaking down of rock by living things, burrows from
What is the breaking down of a rock into smaller pieces?
physical weathering
Is stone breaking a physical change?
Breaking of stone is a physical or chemical change? Explain.
Breaking down rock by physical force?
Smashing a boulder with a hammer.
What are to kinds of weathering?
the types of weathering are physical and chemical. physical: like rain and ice breaking a rock. chemical: like acid rain breaking down a rock.
How is a rock a physical change?
Because you are just breaking it into smaller pieces. The rock's chemical make up is not being changed.
How is smashing a rock physical change?
Because you are just breaking it into smaller pieces. The rock's chemical make up is not being changed.
Chemical change for rocks?
chemical weathering can change a rock by the water freezing inside the roclk and the crease of the rock breaking by the frozen water inside of it.
Why are chemical and physical changes the same?
They're not the same. They're not the same.
What are the sources of weathering?
weathering is the breaking down or dissolving of rock. There are 3 types of weathering chemical, physical and mechanical.
Is rock broken into small pieces a chemical change?
No actually it isn't. Breaking a bone is a physical change. Think about it. Are you changing it into a different substance. No you're not, so it's a physical change.
How does chemical and physical weathering change the earth's surface?
By breaking it down. Chemical weathering uses substances like acid rain to break things down. Physical weathering is breaking it apart without changing the minerals so it means that the pieces of rock, for example, are rubbing off against each other, and wearing the pieces of rock down. The shape of the earth changes, and high, spiky new mountains are worn down into smooth hills, and little rivers cut through rock to form grand canyons.
