This printable crossword puzzle on the topic of Plate Tectonics & Volcanoes has 20 clues. Answers range from 3 to 18 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
A substance composed of 2 or more elements.
The thin and solid outermost layer of the Earth above the mantle.
The layer of rock between the Earth's crust and core.
The central part of the Earth below the mantle.
The solid, outer layer of the Earth that is made up of the crust an the rigid upper part of the mantle.
The soft layer of the mantle on which the tectnic plates move.
The strong, lower part of the mantle between the ashenosphere and the outer core.
The liquid layer of the center of Earth.
The solid layer of thr center of Earth.
A block of lithosphere that is made up of the crust and the ridgid, outermost layer of the mantle.
The continents fit together like a __________.
A earthquake may occur and produce vibrations called _________.
A machine used to measure a seismic wave.
THe hypothesis that states that the continents once formed a single landmass and then split apart till where they are now.
This word is greek for "all earth."
Pangaea existed around __________ million years ago.
Places where sea-floor spreading takes place.
The process where new oceanic lithosphere forms as magma rises to the surface.
When Earth's magnetic poles change places.
South America and Africa fit together and they are called _______________.