Plate tectonics and fossil

4. a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries.
5. the formation of new areas of oceanic crust, which occurs through the upwelling of magma at midocean ridges and its subsequent outward movement on either side.
10. a German polar researcher, geophysicist and meteorologist. During his lifetime he was primarily known for his achievements in meteorology and as a pioneer of polar research,
12. the past formation of the tectonic plates where all of the tectonic plates were merged together as one
14. found above water and is usually harder than others
15. the gradual movement of the continents across the earth's surface through geological time.
16. the rigid outer part of the earth, consisting of the crust and upper mantle.
17. A ring of volcanoes formed by two tectonic plates going torwards each other
19. two tectonic plates sliding past each other horizontally

1. two tectonic plates pushing away from each other
2. a long, seismically active submarine ridge system situated in the middle of an ocean basin and marking the site of the upwelling of magma associated with seafloor spreading. An example is the Mid-Atlantic Ridge.
3. two eectonic plates pushing torwards each other
6. a linear feature that exists between two tectonic plates
7. a giant fault formed from two tectonic plates
8. a giant wave that forms when two tectonic plates snap underwater
9. crust found underwater which is usually softer than others
11. a circular movement on where the temperature of the lava or magma depends on where it is
13. lava that is still inside the volcano
18. the result of where tectonic plates snap causing a vibration and the earth's surface to shake