General terms:
* Viscosity: This refers to the resistance of the magma to flow. High viscosity magma flows slowly and can trap gases, leading to explosive eruptions. Low viscosity magma flows easily and often erupts effusively.
* Fluidity: The opposite of viscosity, this describes how easily the magma flows.
* Rheology: This is the study of the deformation and flow of materials, including magma. It considers factors like viscosity, temperature, pressure, and composition.
Specific terms:
* Effusive eruption: This describes a non-explosive eruption where magma flows out of a vent as lava.
* Explosive eruption: This describes an eruption characterized by rapid release of energy and fragmentation of magma.
* Pyroclastic flow: A fast-moving, dense current of hot gas and rock fragments that travels downhill from a volcano.
* Lava flow: A stream of molten rock that flows from a volcanic vent.
Terms related to flow characteristics:
* Pahoehoe: A smooth, ropy lava flow.
* A'a: A blocky, rough lava flow.
* Lava tube: A tunnel formed by flowing lava.
* Pillow lava: Rounded, bulbous lava formations formed underwater.
The specific term you're looking for depends on the specific aspect of magma flow you're interested in. For example, if you're interested in the speed of magma flow, you might use the term "velocity."
