Plate Tectoics

Question 0

Pangaea

Answer 0

Supercontinent that existed 300 million years ago

Question 1

Continental Drift

Answer 1

Hypothesis that the continents were once joined together and have slowly moved across the Earth’s surface

Question 2

Sea-floor spreading

Answer 2

Process of molten rock rising from the mantle creating new crust

Question 3

Mid-ocean ridge

Answer 3

Undersea mountain range

Question 4

Subduction

Answer 4

Process by which oceanic crust sinks under continental crust and into the mantle

Question 5

Deep-ocean trench

Answer 5

A deep valley on the ocean floor

Question 6

Plate tectonics

Answer 6

Theory that Earth’s plates are in constant motion, floating on the mantle

Question 7

Fault

Answer 7

Breaks/cracks in Earth’s surface

Question 8

Divergent boundary

Answer 8

A boundary where two plates move away from each other

Question 9

Convergent boundary

Answer 9

A boundary where two plates come together

Question 10

Transform boundary

Answer 10

A boundary where two plates slide past each other in opposite directions

Question 11

Constructive forces

Answer 11

Any natural process that builds up Earth’s surface

Question 12

Destructive forces

Answer 12

Any natural process that breaks down Earth’s surface