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Two characteristics of Devils Tower:
- There are long cracks up and down its sides.
- It is isolated from other rock formations in the area.
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Information that would help a geologist learn about how and when Devils Tower formed:
- A) Fossils and minerals in the rock.
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Most likely source of igneous rock:
- C) Volcanoes.
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Does Devils Tower look different now than it did soon after it formed? Justification:
- Yes, Devils Tower likely looks different now than it did shortly after it formed. Over millions of years, erosion from wind, water, and ice can wear away the rock's surface, altering its appearance. Additionally, weathering processes can lead to changes in the rock formations, such as the widening of cracks and changes in the overall shape of the tower.
This video shows Devils Tower, a large rock formation in Wyoming. After watching the video, identify two characteristics of Devils Tower.
It is located at the edge of a large canyon
There are long cracks up and down its sides
The top of the formation is pointed and snowy
It is one of several similar formations in nearby
It is isolated from other rock formations in the area
2
Geologists are scientists who study rocks and other formations like mountains, valleys, and rock layers. What information would help a geologist learn about how and when Devils Tower formed?
A
Fossils and minerals in the rock
B
Distance from the Sun for the rock
C
Animals are living in or on the rock
D
Plant life that is growing near the rock
3
Devils Tower is composed of igneous rock. Igneous rocks get their name from the Latin word ignis, which means fire. Based on this information, what is the most likely source of igneous rock?
A
Oceans
B
Sunlight
C
Volcanoes
D
Plants
4
Scientists estimate that Devils Tower formed 65 million years ago, when dinosaurs still roamed the Earth. Do you think this rock formation looks different now than it did soon after it formed? Briefly justify your answer.
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