Your description of the rocks probably included their
color and surface shape, plus characteristics such as
size, shape, and arrangement of the grains or crystals
in each rock. The characteristics related to grain size
are known as a rock's texturecoarse-grained, fine-grained,
and glassy are all descriptions of a rock's texture.
The texture of igneous rocks can be analyzed to understand
how the rock became solid or crystallized from liquid,
! Click each image to see a larger version plus information
about the rock's texture. Add details to your answers
for question 1.