Which features do most stratovolcanoes and cinder cone volcanoes have in common?
violent eruptions and thin, flowing lava
steep sides and violent eruptions
broad base with quiet eruptions
wide dome shape and thick lava

Option (2)

Explanation:

Strato-volcanoes are the steep, conical shaped, formed by the alternative beds of ash and lava. The magma in this type of volcano contains high silica content and are comprised of bubbles. When the gases are released from these bubbles, then a greater force is exerted from the bottom towards the surface. Due to this, they are very explosive and ejects a huge amount of materials during eruption. For example, Mount St. Helens .

Cinder cones are the simplest volcanoes with steep sides. They are made of the materials and semi solidified lava that are ejected from the vents of the volcano. Eruptions are often explosive due to the force exerted by the gas and the molten lava and are accumulated near the vent. For example, Paricutin.

These two types of volcanoes are similar in terms of its eruption that is violent and explosive in nature. In addition to that, they both have steep sides.

Hence, the correct answer is option (2).

1) Which features do most stratovolcanoes and cinder cone volcanoes have in common? *steep sides and violent eruptions*

2) Geologists observed signs of widespread ancient glaciers from the same time period in areas across South America, Africa, Antarctica, India, and Australia. What theory did this observation support? *Those continents were once together as one supercontinent.*

3) Ocean trenches form over millions or billions of years. Which statement accurately describes how ocean trenches form? *a plate of oceanic crust is subducted under a plate of continental crust*

4) Iron particles in basalt on the ocean floor tell scientists *the direction of the magnetic field*.In two adjacent magnetic stripes, the iron particles show *different* alignments.

5) Why is no land created or destroyed at transform boundaries? *because the plates only slip past each other at these boundaries*

6) In trying to prove continental drift, Alfred Wegener used evidence from long ago to show that in the distant past, similar animal species lived in places that are *separated by great distances* today. For example, fossils of the *Lystrosaurus* were found in India, Africa, and Antarctica.

7) Which statement identifies a major reason for the subduction that helps to form volcanoes? *the difference in density of oceanic and continental plates*

8) Along which features does seafloor spreading occur? *mid-ocean ridges*

*Answers*

d.

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