a bend in rock that forms where part of the earth's crust is compressed. During folding, the stress can cause an anticline (ground mounds upward) or a syncline (ground sinks downsward).
(geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other
a downward bend or fold in a rock layer
an upward bend or fold in a rock layer
shaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity
A location on the surface of the Earth directly above the point(focus) where an earthquake occurs.
the point inside the Earth where an earthquake begins
a measuring instrument for detecting and measuring the intensity and direction and duration of movements of the ground (as an earthquake)
an objective measure of the strength of an earthquake. It measures the degree of magnitude.
Sections of the Earth's crust that move due to convection currents.
Circular currents in the mantle caused by the magma being heated by the core off the Earth.
the gradual movement and formation of continents (as described by plate tectonics)
a hypothetical continent that (according to plate tectonic theory) broke up later into India and Australia and Africa and South America and Antarctica
well suited for grinding food
sharp teeth at the front of the mouth; used for shredding food
an organisim that eats plants
an animal that feeds on both animal and vegetable substances