Mystery Geologist Crossword

when two plates move away from each other
the process proposed by scientists to explain the age and magnetic patterns of sea-floor rocks
the outermost, rigid layer of Earth
a layer of weak or soft mantle that is made of rock that flows slowly
the strong, lower part of the mantle
the liquid layer of Earth's core
the solid, dense center of our planet
the movement of matter that results from differences in density caused by variations in temperature
is located between the core and the crust
the outermost solid layer of Earth
a single large landmass made of all the continents, 245 million years ago
large-scale movements of Earth's lithosphere
pieces the lithosphere is divided into
when two plates collide
when two plates move past each other horizontally
the process by which rocks change shape when under stress
a crack that forms when large blocks of rock break and move past each other
this forms when rock layers are squeezed together and pushed upward, usually at a convergent boundary
this forms when melted rock erupts onto Earth's surface, at convergent boundaries or hot spots
this forms when tension makes the lithosphere break into many normal faults
ground movements that occur when blocks of rock in Earth move suddenly and release energy
this is located directly above the focus on Earth's surface
a series of extremely long waves that can travel across the ocean at speeds up to 800 km/h, caused by an earthquake under the ocean
any place where gas, ash, or melted rock come out of the ground
melted rock below Earth's surface
magma that has reached Earth's surface
an opening of a volcano
the resistance of a liquid material, like lava, to flow
an opening or depression at the top of a volcano caused by eruptions
when the magma chamber under a volcano empties, the roof of the magma chamber may collapse and leave an even larger, basin-shaped depression
a location where a column of extremely hot mantle rock, mantle plume, rises through the asthenosphere
the principle that states that geologic processes that happened in the past can be explained by current geologic processes
the trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock
a fossilized structure that formed in sedimentary rocks by animal activity on or in soft sediment
a long cylinder of ice that scientists collect by drilling into icecaps
determining whether an object or event is older or younger than other objects or events
the law that states younger rocks lie above older rocks if the layers have not been disturbed
a break in the geologic record that is made when rock layers are eroded or when sediment is not deposited for a long period of time