Tectonics Key Terms

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S O V O W P F M S M L Q I J V T Y P R S G
F I N T R A P L A T E V O L C A N I S M I
N U F R U C W D E N J T N L V S C P H Y V
O S S R I A Y B U H F W A I R X L T W P X
I P C A J N G V F Y O L M P D I C I O X L
T U I S X I K B J H O X H J K S H N L U B
C A N P M Q O H G L C Q R O W O C T F O D
A L O P S D M E N X Q T G C U L B E C T G
F H T P A L E O M A G N E T I S M H I P X
E L C S P B C N L V F A W U E H O D T U G
U U E I I I P R B O G G M N E W Y J S E M
Q K T T D K X S J X W P U Q X I C Y A X O
I O E B H O E A I X S A Y Y C H N B L S A
L J T L A W C K W J K Q E O H B U W C F V
S E A F L O O R S P R E A D I N G T O Y Y
K D L G F Y B E N I O F F Z O N E R R U O
D X P G P L A T E B O U N D A R Y B Y N S
K F H S W R R A O R O S T L H P J M P I M
E T E C T O N I C P L A T E B U C K E Q O
E K T G G F I X Q V L M L A A E J E Q V J
Q A U O K K I B X N F U D K U E H A J A W

Clues

  • A large area of the Earth's crust which is stable moves slowly around the Earth's surface. (8, 5)
  • A mixture of water from glaciers melting during a volcanic eruption and volcanic material which is then washed down river valleys and can create serious flooding issues during a volcanic eruption. (11)
  • A record of the orientation of past magnetic fields recorded in igneous rocks as they are erupted at mid-ocean ridges. (14)
  • An area of earthquakes that can be shown to correlate with the location of a subducting oceanic plate as it descends into the mantle. (7, 4)
  • An extremely dangerous cloud of solid rock, lava, ash and volcanic gases erupted from some volcanoes. It can travel at speeds of up to 200 km/hr. (11, 4)
  • The conversion of solid land into liquid due to the shaking occurring in an earthquake. This often leads to the sinking and collapse of buildings on soft sediments. (12)
  • The edge of a tectonic plate where tectonic activity is most focused. (5, 8)
  • The theory of how mid-ocean ridges are formed and new oceanic crust is created and then pushed away from the ridge. (3, 5, 9)
  • The theory of how tectonic plates move around the Earth's surface. (5, 9)
  • Volcanic eruptions that occur in the middle of a tectonic plate rather than on the margins. (5, 5, 9)

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