Difficulty: Medium

Average Score: 52%

The image below shows the movement that occurs when two continental plates slide past one another.

What is the risk of earthquakes and volcanoes along this boundary?

Diagram for question

Rationale

There is low risk of volcanoes and high risk of earthquakes.

When two continental plates slide past one another, known as a transform boundary, the primary geological hazard is the occurrence of earthquakes. This movement does not typically create volcanic activity, as the plates do not converge or diverge in a manner that promotes magma formation.

A (There is low risk of both volcanoes and earthquakes.) YOUR ANSWER

This option is incorrect because while there is indeed a low risk of volcanic activity along transform boundaries, the risk of earthquakes is significant due to the friction and stress that builds up as the plates slide past each other.

B (There is low risk of volcanoes and high risk of earthquakes.) CORRECT

This is the correct answer, as transform boundaries are characterized by the sliding motion of tectonic plates, which leads to the potential for significant earthquakes but very little to no volcanic activity.

C (There is high risk of volcanoes and low risk of earthquakes.) YOUR ANSWER

This choice is incorrect because transform boundaries do not produce volcanic activity; instead, they are primarily associated with earthquakes due to the lateral movement of tectonic plates.

D (There is high risk of both volcanoes and earthquakes.) YOUR ANSWER

This selection is also incorrect because, while the risk of earthquakes is high, there is a negligible risk of volcanic activity at transform boundaries since the geological processes required for volcanism are absent in this type of plate interaction.

Conclusion

Transform boundaries pose a high risk for earthquakes due to the sliding motion of continental plates, which creates stress and friction. However, these boundaries do not contribute to volcanic activity, making it essential to understand the distinct geological risks associated with different types of plate interactions. Thus, the correct assessment identifies a low risk of volcanoes alongside a high risk of earthquakes.

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