Solar panels, also known as photovoltaics, are used to convert light from the sun, which is composed of particles of energy called photons, into electricity that can be used to power elecrical loads. Light from the sun is a renewable energy resource which provides clean energy, produced by solar panels.
An Igneous rock is the product of cooled solidified magma/lava. As magma/lava cools it goes through the process of crystallization which turns it into an igneous rock. The amount of time it takes for an igneous rock to form depends on its location and its composition.
Granite is an example of this type of igneous rock. Small crystals (fine texture) or no crystals (glassy texture) means that the rock cooled fast. These rocks usually form during a volcanic eruption and are called extrusive igneous rocks. Basalt is an example of this type of igneous rock.