Sedimentry Rocks Flashcards
(25 cards)
What is weathering?
Weathering is the process that breaks down rocks into smaller particles or sediments.
What are the two main types of weathering?
The two main types of weathering are physical weathering and chemical weathering.
True or False: Physical weathering alters the chemical composition of rocks.
False.
Fill in the blank: __________ weathering involves the breakdown of rocks without changing their chemical composition.
Physical
What is an example of physical weathering?
An example of physical weathering is freeze-thaw action, where water enters cracks in rocks, freezes, and expands, causing the rock to break.
What is chemical weathering?
Chemical weathering is the process that alters the minerals within rocks through chemical reactions.
Which type of weathering is responsible for the formation of clay minerals?
Chemical weathering.
Multiple Choice: Which of the following is NOT a process of physical weathering? A) Abrasion B) Hydrolysis C) Frost action
B) Hydrolysis
What role does water play in chemical weathering?
Water acts as a solvent, facilitating chemical reactions that break down minerals.
True or False: Both physical and chemical weathering can lead to the formation of sediments.
True.
What is the end product of weathering?
The end product of weathering is sediments.
Fill in the blank: __________ weathering can result in the formation of rust on iron-containing rocks.
Chemical
What is the difference between physical and chemical weathering in terms of rock structure?
Physical weathering breaks rocks into smaller pieces without changing their structure, while chemical weathering changes the mineral composition of the rocks.
What is an example of a chemical weathering process?
An example of a chemical weathering process is carbonation, where carbon dioxide dissolves in rainwater to form carbonic acid.
Which type of weathering is more effective in warmer, wetter climates?
Chemical weathering.
True or False: Physical weathering typically occurs more rapidly than chemical weathering.
False.
What is the significance of weathering in the rock cycle?
Weathering is significant in the rock cycle because it creates sediments that can become sedimentary rocks.
Fill in the blank: __________ weathering can lead to the development of soil.
Both physical and chemical
Multiple Choice: Which factor does NOT influence the rate of weathering? A) Climate B) Rock type C) Time of day
C) Time of day
What is the main agent of physical weathering?
The main agent of physical weathering is mechanical forces, such as wind, water, and temperature changes.
What is an important consequence of weathering for ecosystems?
Weathering provides essential minerals and nutrients to soil, which supports plant growth.
Fill in the blank: __________ is the process that involves the breakdown of rocks by living organisms.
Biological weathering
What is one way that plants contribute to weathering?
Plants contribute to weathering through root growth, which can break apart rocks.
True or False: Weathering occurs only in the presence of water.
False.
