lesson 2 chapter 5 vocab science
Terms in this set (12)
A seismic wave is a vibration that travels through Earth.
The crust is the thin layer of solid rock that makes up
the outermost part of Earth.
The mantle is the thick layer of solid and molten rock that lies beneath the crust.
The core is the central part of Earth.
The lithosphere is the rigid outer part of Earth made up of rocks in the crust attached to the upper part of the mantle.
Because of intense heat and pressure, mantle rocks below the lithosphere are semimolten, or almost melted.
the layer of semimolten mantle rock that lies directly below the lithosphere.
Magma is molten, or melted, rock deep below the surface of Earth. Its temperature
is between 650°C and 1,200°C (1,202°F and 2,192°F).
When volcanoes erupt, magma can surface as rock or as lava, the surface form of magma.
Convective flow is the continuous circular pattern of materials as they are heated and cooled.
is the theory that Earth's surface is made up of separate, rigid plates that move slowly across the mantle. These plates are called tectonic plates.
When plates converge, usually one plate sinks or slides under the other one.