Examine the video and answer the questions.

Question

1
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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Answer 1

1. Two characteristics of Devils Tower are:

• There are long cracks up and down its sides.
• It is isolated from other rock formations in the area.

2. The information that would help a geologist learn about how and when Devils Tower formed is:

A. Fossils and minerals in the rock.

3. The most likely source of igneous rock is:

C. Volcanoes.

4. Yes, I think this rock formation looks different now than it did soon after it formed. Over the course of 65 million years, weathering and erosion would have altered its surface, changing its appearance and potentially affecting the size and shape of the rock formation. Additionally, the surrounding environment may have evolved while the rock itself has undergone physical changes.