Lesson 2 Plate Boundaries

Question 1

Sea floor spreading

Answer 1

formation of new area of oceanic crust which occurs through the upwelling of magma at midocean ridges and its subsequent outward movement on either side.

Question 2

boundary

Answer 2

border between two tectonic plates

Question 3

Plate boundaries

Answer 3

Convergent
Divergent
Transform

Question 4

Convergent Boundary

Answer 4

also called destructive plate boundary
two plates are pushing towards each other
younger plates moves over on top of the older plate creating a trench

Question 5

Subduction zones

Answer 5

regions where a portion of the tectonic plates are diving beneath Earth’s interior

Question 6

Oceanic Oceanic convergence occur when

Answer 6

when two oceanic plates meet and one is pushed beneath the other

Question 7

Oceanic continental convergence occurs when

Answer 7

oceanic plate pushes into and moves underneath a continental plate and the result is mountain ranges

Question 8

Continental continental convergence occurs when

Answer 8

two continents meet head on and neither plate is moved underneath each other
tall mountain ranges occur

Question 9

Divergent Boundary

Answer 9

zone where two lithospheric plates move apart from each other
also known as constructive boundary
produces long rift zones, normal faults, and basalticc volcanism

Question 10

Divergent Boundaries are marked by

Answer 10

mid oceanic ridge

Question 11

Transform Fault Boundary

Answer 11

zone between two plates that slide horizontally past each other
also so called conservative boundary
generally vertical and parallel to the movement

Question 12

Triple junction

Answer 12

where three plate boundaries meet : ridge trench, or transform