Earth's Plates

Rivers and other features on the surface are offset when plates ____________.

At ___________________, the ocean floor sinks down into the mantle, rock melts, then rises and eruptions occur.

The ______ is a place WITHIN Earth along a fault at which the first motion of an earthquake occurs.

Directly above the focus ON Earth's surface is the _______.

Mt. St. Helen's is a __ volcano. Alternating layers of hardened lava and pyroclastic material create large, steep slopes

Which type of movement is shown in the boundary?

The return of rock to its original shape after elastic deformation is called _______.

Which type of plate boundary movement is shown in the image, and what type of landform is most likely to occur here?

Older rocks are located further away from mid-ocean ridges.

Which description is evidence for the theory of plate tectonics but not that the continents were once connected?

The ______ of lava determines the explosiveness of an eruption and the shape of the resulting volcanic mountain.

Which of these does not provide evidence that the continents drifted to their present locations?

Fossils of the same age and type have been found __________________ separated by vast ______________.

______ is the process by which rock becomes deformed and changes shape due to stress.

The crack that forms when large blocks of rock break and move past each other is called a ________.

The rate of plate movement is a fast process.

Which processes are best explained by the theory of plate tectonics?

Which of these types of rock would most likely be the youngest?

Both deep-ocean trenches and mountain ranges can form where plates ______________.

Energy from the _________________ drives convection currents in the mantle.

___________ mountains form when melted rock erupts onto Earth's surface.

Which statement explains why tectonic plates move?

Both mid-ocean ridges and ocean basins form where plates ___________.

Each year there are approximatley ________ earthquakes detected around the world.

Lava and ash clouds erupt from a _______, or opening of a volcano.