Which type of weathering occurs when there is a large difference in temperature throughout the year and rock is constantly expanding and contracting, causing it to "peel off' in layers?

Question

abrasion
abrasion

carbonation
carbonation

exfoliation
exfoliation

hydrolysis

Answer 1

The type of weathering you are describing is exfoliation. This process occurs when rocks expand and contract due to significant temperature fluctuations, causing them to peel off in layers.

Answer 2

Which type of weathering occurs when water reacts with the feldspar in a rock and it becomes a softer clay?
abrasion
abrasion

carbonation
carbonation

exfoliation
exfoliation

hydrolysis

Answer 3

The type of weathering that occurs when water reacts with the feldspar in a rock, causing it to convert into a softer clay, is called hydrolysis. This process involves the chemical reaction between water and minerals, leading to the formation of clay minerals.

Answer 4

Which type of weathering occurs when CO2 in rainwater dissolves portions of limestone and forms many of the caves we see in southern Indiana?

abrasion
abrasion

carbonation
carbonation

exfoliation
exfoliation

hydrolysis

Answer 5

The type of weathering that occurs when CO2 in rainwater dissolves portions of limestone and leads to the formation of caves is called carbonation. This process involves the reaction of carbon dioxide with water to form carbonic acid, which can effectively dissolve limestone, allowing for the development of features like caves.

Answer 6

Please these types of weathering into the correct column(4 points)
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Physical Weathering Chemical Weathering

Abrasion

Exfoliation

Carbonation

Oxidation

Answer 7

Here’s how the types of weathering can be classified into the correct columns:

Physical Weathering

• Abrasion
• Exfoliation

Chemical Weathering

• Carbonation
• Oxidation

Answer 8

Describe how a glacier eroded this valley through the process of abrasion

1) How does the glacier move

2) What happens while it is moving that makes the glacier able to erode the valley?

3) How do these actions work together to create a glacial valley?

Answer 9

1) How does the glacier move?

Glaciers move primarily through two processes: internal deformation and basal sliding. Internal deformation occurs when the ice within the glacier deforms and flows, allowing the entire mass of the glacier to move downhill under the influence of gravity. Basal sliding happens when the bottom of the glacier melts slightly due to pressure, creating a thin layer of water that acts as a lubricant, allowing the glacier to slide over the underlying rock and sediment.

2) What happens while it is moving that makes the glacier able to erode the valley?

As the glacier moves, it carries with it a vast amount of rocks and debris embedded within the ice (these are called glacial till). The weight and movement of the glacier cause the embedded rocks to scrape against the valley floor and walls, a process known as abrasion. This scraping action grinds down the bedrock and can create features such as striations (scratches in the rock) and grooves. Additionally, as rocks and sediments are eroded, they can become further broken down into finer particles, which enhances the glacier's ability to erode more material.

3) How do these actions work together to create a glacial valley?

The combination of the glacier's movement through internal deformation and basal sliding, along with the abrasive action of the rocks it carries, results in a significant transformation of the valley. Over time, the continual erosion through abrasion widens and deepens the valley, creating a characteristic U-shape. This process also modifies the landscape by creating features like hanging valleys, troughs, and sometimes even cirques (bowl-shaped depressions at the head of a glacier). As the glacier retreats, it leaves behind a distinct glacial valley that is wider and deeper than the original river valley, showcasing the powerful effects of glacial erosion.

Answer 10

Put it in one Scentence

Answer 11

A glacier moves downhill through internal deformation and basal sliding, carrying embedded rocks that scrape against the valley floor and walls, eroding the rock through abrasion and ultimately creating a distinct U-shaped glacial valley.