Tectonics Key Terms

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

Clues

  • A large area of the Earth's crust which is stable moves slowly around the Earth's surface. (8, 5)
  • 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)
  • Movement of hot material in the Mantle which is thought to be the primary driver of tectonic plate movement. (10, 7)
  • 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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