Questions: 14. Frequent earthquakes in a given zone are evidence that 15. How do volcanoes help to identify the locations of plates boundaries? 16. A zone of active volcanoes that encircles the Pacific Ocean is known as the 17. In addition to volcanoes, what also frequently occurs in the Pacific Ring of Fire? 18. What do the characteristics of the Pacific Ring of Fire indicate? TYPES OF PLATE BOUNDARIES In the space provided, write the letter of the definition that best matches the term or phrase. 19. divergent a. boundary between tectonic plates that are 20. convergent sliding past each other horizontally 21. transform b. region where one plate moves under another 22. mid-ocean ridge c. boundary between tectonic plates that are moving away from each other 23. subduction zone d. undersea mountain range 24. fracture zone e. short segments of a mid-ocean ridge that are connected by transform boundaries f. the boundary between colliding tectonic plates

Let's address the first three questions as per the guidelines:

Frequent earthquakes in a given zone are evidence that the area is tectonically active. This typically indicates that the region is located near or on a tectonic plate boundary where plates are either colliding, sliding past each other, or moving apart. The movement of these plates generates stress and strain in the Earth's crust, which is released in the form of earthquakes.

Volcanoes help to identify the locations of plate boundaries because they often form at these boundaries. There are three main types of plate boundaries where volcanic activity is common:

• Divergent Boundaries: At mid-ocean ridges where tectonic plates are moving apart, magma rises from below the Earth's crust to fill the gap, creating new crust and often forming volcanic activity.
• Convergent Boundaries: Where one tectonic plate is forced under another (subduction zones), the descending plate melts and forms magma, which can rise to the surface and create volcanoes.
• Transform Boundaries: Although less common, volcanic activity can also occur near transform boundaries where plates slide past each other.

The answer is the "Pacific Ring of Fire." This is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur. It is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and plate movements.

1. Frequent earthquakes indicate tectonic activity, often near plate boundaries.
2. Volcanoes mark plate boundaries by forming at divergent, convergent, and sometimes transform boundaries.
3. The Pacific Ring of Fire is a zone of active volcanoes encircling the Pacific Ocean.

This concludes the response to the first three questions.