Final answer:
Pahoehoe and Aa are textures associated with basalt lava flows. Pahoehoe has a smooth appearance, while Aa is rough and jagged. These textures are specific to basalt and are not used for other rock types such as stratovolcano lavas, granites, andesites, or rhyolites.
Step-by-step explanation:
Pahoehoe and Aa are textures associated with basalt lava flows. These terms are specifically used to describe the surface of the basalt once it has cooled and solidified. Pahoehoe has a smooth, billowy, or ropy surface and is associated with more fluid lava flows, whereas Aa has a rough, jagged, and clinkery surface resulting from the cooling of more viscous lava.
Basalt is a fine-grained volcanic rock that is commonly found in many regions with active or historic volcanic activity, including Hawaii, where the terms Pahoehoe and Aa originate. This type of rock can erupt from volcanoes and flow over large areas, forming distinctive landscapes. In the context of lava textures and types, these terms are not used to describe stratovolcano lavas, granites, andesites, or rhyolites.