Down to earth Crossword

The supercontinent of the Northern Hemisphere that, according to the theory of plate tectonics, broke up into North America, Greenland, Europe, and Asia except for the Indian subcontinent.
A natural disaster characterized by the rapid inward circulation of air masses about a low-pressure centre, usually accompanied by stormy, often destructive weather.
These currents cause the movement of the crustal plates
layers within sedimentary rocks
types of rocks formed by the deposition and cementation of mineral and organic particles
A supercontinent that included all the world's landmasses in the late Paleozoic.
evidence of past life
A scale for expressing the magnitude of an earthquake
This layer lies between the Earth's dense, super-heated core and its thin outer layer.
A mixture of molten or semi-molten rock, volatiles and solids that is found beneath the surface of the Earth
The supercontinent of the Southern Hemisphere that, according to the theory of plate tectonics, broke up into India, Australia, Antarctica, Africa, and South America.
The molten rock expelled by a volcano during an eruption.
First suggested that continents are in motion
relating to or caused by an earthquake
rocks altered by pressure and/or heat
A rupture in the crust of a planet that allows hot lava, volcanic ash, and gases to escape from the magma chamber below.
this law relates to the order in which strata is laid down
A seismic sea wave caused by the displacement of a large volume of water, generally as a result of an earthquake
made up of fragments of preexisting rocks
rocks formed when hot liquid rock cools and solidifies
The theory that plates on which continents lie are in constant motion