[rm.02]one student did an experiment on the rock cycle. the steps of the experiment are shown below.
• half fill a glass bottle with pieces of granite.
• pour dilute acid into the bottle to submerge all the granite pieces.
• after a week pour off the acid.
• shake the bottle vigorously for two minutes.
• filter the contents of the bottle into a dish of water.
• leave the dish undisturbed for an hour.
• put two heavy weights on the material in the dish for a week.
what does the student's experiment most likely demonstrate about the rock cycle?
pressure can cause melting of rocks to form igneous rocks.
pressure can crystallize dissolved rocks to form sedimentary rocks.
a series of steps can cause weathering of rocks to form sedimentary rocks.
a series of steps can transform rocks into magma which cools to form igneous rocks.

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.