Podcast
Questions and Answers
How does the formation of the igneous rock columns at Devils Tower differ from the formation of Half Dome?
How does the formation of the igneous rock columns at Devils Tower differ from the formation of Half Dome?
- Devils Tower formed from volcanic eruptions while Half Dome formed from magma cooling underground.
- Devils Tower is a volcanic neck while Half Dome is a batholith.
- Devils Tower is made of basalt while Half Dome is made of granite.
- Devils Tower's columns were exposed through erosion while Half Dome was exposed through glacial erosion. (correct)
What is the main difference between the rock formations at Devils Tower and Half Dome?
What is the main difference between the rock formations at Devils Tower and Half Dome?
- The rock type, Devils Tower is basalt and Half Dome is granite.
- The shape, Devils Tower is columnar and Half Dome is dome-shaped. (correct)
- The age, Devils Tower is younger and Half Dome is older.
- The method of cooling, Devils Tower is extrusive and Half Dome is intrusive.
Which of the following describes the rock formation process for Devils Tower?
Which of the following describes the rock formation process for Devils Tower?
- Volcanic ash solidified and hardened into a light, porous rock.
- Magma cooled underground, forming a large mass of igneous rock that later eroded.
- Magma rose towards the surface, cooled slowly, and cracked into columnar shapes. (correct)
- Lava flowed onto the surface and cooled quickly, forming a smooth, solid rock.
Which of the following is NOT a factor in the formation of Half Dome?
Which of the following is NOT a factor in the formation of Half Dome?
What is the key difference between the processes that formed Devils Tower and Half Dome?
What is the key difference between the processes that formed Devils Tower and Half Dome?
Why is pumice considered a quick-cooling igneous rock?
Why is pumice considered a quick-cooling igneous rock?
What is the main reason for the columnar shape of Devils Tower?
What is the main reason for the columnar shape of Devils Tower?
Flashcards
Igneous Rock
Igneous Rock
Rock formed from cooled and solidified magma or lava.
Devils Tower
Devils Tower
A national monument with prominent igneous rock columns in Wyoming.
Quick-cooling igneous rock
Quick-cooling igneous rock
Igneous rock that cools rapidly, often appears spongy.
Pumice
Pumice
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Half Dome Formation
Half Dome Formation
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Granite
Granite
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Erosion
Erosion
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