Final answer:
Slate, schist, and gneiss are all classified as metamorphic and foliated rocks. The texture of these rocks is determined by the intensity of the metamorphic process, and in the case of slate, schist, and gneiss, they exhibit a foliated texture with minerals arranged in bands or stripes.
Step-by-step explanation:
Slate, schist, and gneiss are all rocks which are classified as metamorphic and foliated.
Metamorphic rocks are formed from pre-existing rocks that undergo changes in temperature and pressure.
The texture of these rocks is determined by the intensity of the metamorphic process, and in the case of slate, schist, and gneiss, they exhibit a foliated texture with minerals arranged in bands or stripes.