A ridge made up of the uppermost part of the mantle and the crust.
What is the lithosphere?
The transfer of heat by the movement of fluid.
What is convection?
The soft layer on which the lithosphere floats.
What is asthenosphere?
The transfer of energy through space.
What is radiation?
The transfer of heat within materials that are touching.
What is conduction?
The movement of fluid caused by differences in temperatures.
What is convection current?
A section of the lithosphere that slowly moves over the asthenosphere.
What are plates?
A deep valley along the ocean floor.
What is a deep-ocean trench?
The process by which the oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.
What is subduction?
A well tested concept that explains a wide range of observations.
What is scientific theory?
The theory that pieces of the Earth's lithosphere are in constant motion.
What are plate tectonics?
A break in Earth's rock where masses of rock slip past each other.
What is a fault?