Question 1:

Which type of plate boundary is commonly associated with volcanic activity?

Explanation: Volcanic activity is commonly associated with convergent boundaries and divergent boundaries. At convergent boundaries, volcanic activity occurs when one tectonic plate subducts beneath another, creating a volcanic arc. At divergent boundaries, volcanic activity occurs due to the upwelling of magma from the mantle, leading to the formation of new crust. Therefore, the correct answer is B) Convergent boundary.

Question 2:

Which type of volcano is characterized by explosive eruptions and steep-sided slopes?

Explanation: Stratovolcanoes, also known as composite volcanoes, are characterized by explosive eruptions and steep-sided slopes. These volcanoes are formed by alternating layers of lava flows and pyroclastic materials. Shield volcanoes, on the other hand, have gentle slopes and are characterized by non-explosive eruptions. Therefore, the correct answer is C) Stratovolcano.

Question 3:

Which famous volcanic eruption occurred in 1980 in the United States?

Explanation: The famous volcanic eruption that occurred in 1980 in the United States was the eruption of Mount St. Helens. This eruption resulted in the loss of several lives and caused significant damage to the surrounding area. Therefore, the correct answer is C) Mount St. Helens.

Question 4:

Which type of volcanic feature is a large depression formed after the collapse of a volcano following an eruption?

Explanation: A caldera is a large depression formed after the collapse of a volcano following an eruption. It is typically larger and deeper than a crater. Craters, on the other hand, are smaller and are often formed at the summit of a volcano. Therefore, the correct answer is B) Caldera.

Question 5:

Which tectonic boundary is associated with the formation of volcanic island arcs?

Explanation: Volcanic island arcs are formed at convergent boundaries where oceanic plates subduct beneath another oceanic plate or a continental plate. As the subducting plate melts, magma rises to the surface, leading to the formation of volcanic islands. Therefore, the correct answer is B) Convergent boundary.