Which process is most likely responsible for the formation of limestone caves?(1 point)
Responses
abrasion
abrasion
oxidation
oxidation
carbonation
carbonation
hydrolysis
carbonation
Which option best describes hydrolysis?(1 point)
Responses
water reacting chemically with minerals in rock
water reacting chemically with minerals in rock
carbon dioxide reacting with water to form an acid that dissolves minerals in rock
carbon dioxide reacting with water to form an acid that dissolves minerals in rock
oxygen in water combining chemically with substances in rock
oxygen in water combining chemically with substances in rock
hydrogen in water combining chemically with substances in rock
water reacting chemically with minerals in rock
Which type of region would be most likely to support chemical weathering?(1 point)
Responses
a desert region with very little rain
a desert region with very little rain
a polar region that is cold and dry all year long
a polar region that is cold and dry all year long
a tropical region that is hot and humid all year long
a tropical region that is hot and humid all year long
a temperate region with warm summers and cold winters
a tropical region that is hot and humid all year long
I.,end bold,
The Pobble who has no toes
Had once as many as we;
When they said, "Some day you may lose them all;"
He replied, "Fish fiddle de-dee!"
And his Aunt Jobiska made him drink
Lavender water tinged with pink;
For she said, "The World in general knows
There's nothing so good for a Pobble's toes!"
(from "The Pobble Who Has No Toes" by Edward Lear)
Question
Which rhyme scheme does this poem follow?
Answer options with 4 options
1.
a b a b c d c d
2.
a b b a c d d c
3.
a b c b d d a a
4.
a b c b a a b b
2. a b b a c d d c
In which region did the Comanche people live?(1 point)
Responses
the Gulf region
the Gulf region
the Apache region
the Apache region
the Rio Grande
the Rio Grande
the Great Plains region
the Great Plains region
the Great Plains region
The process most likely responsible for the formation of limestone caves is carbonation.
To understand why carbonation is the correct answer, we need to first understand what limestone is and how caves are formed.
Limestone is a sedimentary rock primarily composed of calcium carbonate. It is formed from the accumulation of shells, coral, and other debris from marine organisms that lived millions of years ago. Over time, layers of sediment build up and undergo compaction, forming solid rock.
Caves, on the other hand, are natural cavities that are found beneath the Earth's surface. They can be formed through various processes, but the most common type of cave formation is known as solution caves. These caves are formed by the dissolution of soluble rocks, such as limestone, by acidic water.
Now, let's look at the options provided:
1. Abrasion: Abrasion refers to the process of wearing down or scraping away materials through friction. While abrasion can shape the surface of rocks and create features like grooves or potholes, it is not the primary process responsible for forming limestone caves.
2. Oxidation: Oxidation is a chemical reaction that occurs when a substance combines with oxygen. While oxidation can contribute to the weathering and breakdown of minerals in rocks, it is not the primary process responsible for forming limestone caves.
3. Carbonation: Carbonation is the process in which carbon dioxide (CO2) combines with water to form carbonic acid. Carbonic acid is a weak acid that can dissolve calcium carbonate, the main mineral in limestone. Over time, the acidic water erodes and dissolves the limestone, creating underground cavities and caverns. This is why carbonation is the most likely process responsible for the formation of limestone caves.
4. Hydrolysis: Hydrolysis is a chemical reaction that occurs when water reacts with a substance to break it down. While water can play a role in the formation of caves by facilitating chemical reactions, hydrolysis is not the primary process responsible for forming limestone caves.
In conclusion, the process most likely responsible for the formation of limestone caves is carbonation.