The image below shows numerous volcanic mountains in the Pacific Northwest. What is the most likely cause of the volcanic and earthquake activity in this region? (1 point)
Responses
rising and falling tides in the ocean
rising and falling tides in the ocean
random abnormal weather occurrences
random abnormal weather occurrences
solar and lunar variations
solar and lunar variations
collision of tectonic plates
collision of tectonic plates
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collision of tectonic plates
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Question
The food web for a particular ecosystem is shown below. What would most likely happen if the grasshopper population had a major increase?(1 point)
Responses
The duck population would decrease.
The duck population would decrease.
The snake population would increase.
The snake population would increase.
The lizard population would not change.
The lizard population would not change.
The frog population would decrease.
The frog population would decrease.
The snake population would increase.
The most likely cause of the volcanic and earthquake activity in the Pacific Northwest region is the collision of tectonic plates.
The most likely cause of the volcanic and earthquake activity in the Pacific Northwest region, as shown in the image, is the collision of tectonic plates. To understand this, let's look at how tectonic plates work.
The Earth's lithosphere is divided into several large plates that float on the underlying semi-fluid asthenosphere. These plates are constantly moving, albeit very slowly. At plate boundaries, where two plates interact, various geological processes occur.
In the Pacific Northwest, the North American tectonic plate is colliding with the Juan de a plate, which is a small oceanic plate. The Juan de a plate is being subducted (or forced beneath) the North American plate along a subduction zone offshore. As the Juan de a plate is being pushed deeper into the Earth's mantle, it generates intense heat and pressure, causing magma to rise towards the surface. This leads to the formation of volcanic mountains in the region.
The collision between these two plates also creates a lot of stress and pressure along the plate boundaries. This stress is gradually released through earthquakes, which can occur frequently in the Pacific Northwest.
Therefore, the collision of tectonic plates is the most likely cause of the volcanic and earthquake activity in the Pacific Northwest region.