The correct answer is (a)
the cracking of rock caused by the freezing and thawing of water
.
What is the best example of weathering?
Example of weathering:
Wind and water
cause small pieces of rock to break off at the side of a mountain. Weathering can occur due to chemical and mechanical processes. Erosion is the movement of particles away from their source. Example of erosion: Wind carries small pieces of rock away from the side of a mountain.
What are 5 examples of weathering?
- Carbonation. When you think of carbonation, think carbon! …
- Oxidation. Oxygen causes oxidation. …
- Hydration. This isn’t the hydration used in your body, but it’s similar. …
- Hydrolysis. Water can add to a material to make a new material, or it can dissolve a material to change it. …
- Acidification.
What are the 3 types of weathering?
Weathering is the breakdown of rocks at the Earth’s surface, by the action of rainwater, extremes of temperature, and biological activity. It does not involve the removal of rock material. There are three types of weathering,
physical, chemical and biological
.
What is weathering explain with examples?
Weathering describes
the breaking down or dissolving of rocks and minerals on the surface of the Earth
. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.
What are 3 examples of physical weathering?
- Swiftly moving water. Rapidly moving water can lift, for short periods of time, rocks from the stream bottom. …
- Ice wedging. Ice wedging causes many rocks to break. …
- Plant roots. Plant roots can grow in cracks.
What are some real life examples of weathering?
- Water Bodies. Running water mostly hits the rocks constantly and weathers them. …
- Oxidation. The simplest definition of this type of weathering is the formation of rust when rock is exposed to air. …
- Carbonation. …
- Sinkhole. …
- Cave. …
- Stalactite. …
- Stalagmite.
What are 4 examples of erosion?
Rain, rivers, floods, lakes, and the ocean carry away bits of soil and sand and slowly wash away the sediment. Rainfall produces four types of soil erosion:
splash erosion, sheet erosion, rill erosion, and gully erosion
.
What is the best example of erosion?
Some of the most famous examples of erosion include
the Grand Canyon
, which was worn away over the course of tens of millions of years by the Colorado River with the help of winds whipping through the formed canyon; the Rocky Mountains in Colorado have also been the subject of intense geological study, with some …
What are the 6 types of weathering?
- Frost Wedging or Freeze-Thaw. ••• Water expands by 9 percent when it freezes into ice. …
- Crystal Formation or Salt Wedging. ••• Crystal formation cracks rock in a similar way. …
- Unloading and Exfoliation. ••• …
- Thermal Expansion and Contraction. ••• …
- Rock Abrasion. ••• …
- Gravitational Impact. •••
What is an example of physical weathering?
When you pick up a rock out of a creek or stream
, you are seeing an example of physical weathering, which is also referred to as mechanical weathering. … When the rocks drop back down they bump into other rocks, and tiny pieces of the rocks can break apart. Many rock surfaces have small crevices on them.
What do you mean by weathering class 8?
Answer. Weathering refers
to the breaking up and decay of exposed rocks
. This breaking up and decay are caused by temperature fluctuations between too high and too low, frost action, plants, animals, and even human activity. Weathering is the major process involved in the formation of soil.
What is the difference between physical and chemical weathering?
Physical, or mechanical, weathering happens when rock is broken through the force of another substance on the rock such as ice, running water, wind, rapid heating/cooling, or plant growth. Chemical weathering occurs
when reactions between rock and another substance dissolve the rock, causing parts of it to fall away
.
What is an example of chemical weathering?
Some examples of chemical weathering are
rust
, which happens through oxidation and acid rain, caused from carbonic acid dissolves rocks. … Other chemical weathering, such as dissolution, causes rocks and minerals to break down to form soil.
What are the examples of mechanical weathering?
Examples of mechanical weathering include
frost and salt wedging
, unloading and exfoliation, water and wind abrasion, impacts and collisions, and biological actions. All of these processes break rocks into smaller pieces without changing the physical composition of the rock.
Which of the following is an example of chemical weathering?
Chemical weathering occurs when water dissolves minerals in a rock, producing new compounds. This reaction is called
hydrolysis
. Hydrolysis occurs, for example, when water comes in contact with granite. Feldspar crystals inside the granite react chemically, forming clay minerals.
