Critical Thinking

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Critical Thinking
Answer each of these questions. Be sure to refer to any outside links given.

This activity contains 2 questions.

The Tifernine Dunes reach heights of over 300 meters. What type of dunes are they, and from what direction does the dominant wind blow?

The dunes are trapped in an enclosure in the Tassili Najjer Mountains. Would you classify this structure as an anticlinal or a synclinal structure? Explain.

How does the Tifernine Dunes' setting contribute to their great height? [Hint: what do you think would happen to the sand if the enclosure did not exist?]

To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.

Arroyos, a particular type of dry wash, have become ubiquitous features of the landscape in the western U.S., especially in the Colorado Plateau region of Utah, Arizona, Colorado, and New Mexico. Read about arroyos at the following sites:

Agents of Change on the Colorado Plateau - The Arroyo Problem (Part 1)
Agents of Change on the Colorado Plateau - The Arroyo Problem (Part 2)
Agents of Change on the Colorado Plateau - The Arroyo Problem (Part 3)
Recent Alluvial History of the Southern Colorado Plateau

What is an arroyo, and how are arroyos formed? What is the arroyo problem? Write an essay based on your reading and your knowledge of arid landscapes.

To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.

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