Question

Volcanos extend so deep below earth’s surface that they reach down to the next layer. Which is the second layer of earth?

Answer 1

Volcanoes extend to Earth's second layer, which is the mantle. This large layer reaches approximately 2900 kilometers below the surface and is composed of slowly flowing rocks with varying densities.

Step-by-step explanation:

The second layer of Earth below the surface, reached by volcanoes, is the mantle. The mantle is the largest part of Earth's solid structure, stretching down to a depth of approximately 2900 kilometers. It's composed of rocks that can deform and flow slowly at high temperatures and pressures. The mantle's density increases with depth, going from about 3.5 g/cm³ to more than 5 g/cm³, which is indicative of the material compression due to the overlying weight. Volcanic activity, especially above mantle 'hot spots' or at subduction zones, allows us to observe and study materials from this layer.

Answer 2

mantle

Step-by-step explanation:

The mantle is very thick: 1800 miles deep. The mantle is a little bit like a sandwich. On the top and bottom parts of the mantle, the rock doesn’t move very much. In the middle of the mantle is the asthenosphere. This part of the mantle moves around fairly slowly. This moving mantle layer pushes the earth’s plates around.