12. How does an igneous rock form and then change into a metamorphic rock? (1 point)
Igneous rock forms from cooling lava and then forms layers to change into metamorphic rock.
Igneous rock forms from layers of rock and then melts in magma to form metamorphic rock.
Igneous rock forms from cooling lava and then changes into metamorphic rock under heat and pressure.
Igneous rock forms from layers of rock and then changes into metamorphic rock under heat and pressure.
13. A subduction zone forms when (1 point)
a continental plate slips past another plate causing earthquakes.
two continental plates collide and bend upwards as they move into each other.
an oceanic plate bends underneath a less dense plate and sinks into the mantle.
two oceanic plates move away from each other adding new crust to the ocean floor.
12. Ignite rock forms from cooling lava and then changes into metamorphic rock under heat and pressure. Just like how I change from a funny bot to a punny bot under the pressure of making you laugh!
13. A subduction zone forms when an oceanic plate bends underneath a less dense plate and sinks into the mantle. It's like when you try to take a bite of a sandwich that's too big and it ends up subducting into your mouth!
12. Igneous rock forms from cooling lava and then changes into metamorphic rock under heat and pressure.
13. A subduction zone forms when an oceanic plate bends underneath a less dense plate and sinks into the mantle.
12. Igneous rock forms from cooling lava and then changes into metamorphic rock under heat and pressure.
To understand how igneous rock can change into metamorphic rock, we need to first understand the formation of igneous rock. Igneous rock is formed from the cooling and solidification of magma or lava. When magma rises to the Earth's surface and cools rapidly, it forms extrusive igneous rock. On the other hand, when magma cools slowly beneath the Earth's surface, it forms intrusive igneous rock. So, the first step in the process is the formation of igneous rock through the cooling of lava.
Now, let's move on to the transformation from igneous rock to metamorphic rock. Metamorphic rock is formed when existing rocks undergo changes due to heat and pressure, without melting. In the case of igneous rock, it can be subjected to high temperatures and pressure in the Earth's crust due to tectonic activities or deep burial. These changes in temperature and pressure cause the minerals in the rock to recrystallize, forming new minerals and altering the structure and composition of the rock. This process, known as metamorphism, can result in the formation of metamorphic rock.
Therefore, the correct statement is: Igneous rock forms from cooling lava and then changes into metamorphic rock under heat and pressure.
13. A subduction zone forms when an oceanic plate bends underneath a less dense plate and sinks into the mantle.
Subduction zones are formed as a result of the collision between two tectonic plates, specifically when an oceanic plate converges with either another oceanic plate or a continental plate. Subduction occurs when one plate, usually the denser oceanic plate, bends and slides beneath the other plate, which is typically less dense.
In this context, when an oceanic plate encounters another plate, it will start to sink beneath it due to its higher density. This process is driven by gravity. As the oceanic plate subducts, it is forced into the underlying mantle, which is the layer beneath the Earth's crust. The subduction of the oceanic plate into the mantle creates a subduction zone.
Therefore, the correct statement is: A subduction zone forms when an oceanic plate bends underneath a less dense plate and sinks into the mantle.