chapter 6 vocab

Question 0

Continental drift

Answer 0

Continents are in constant motion on the surface of earth

Question 1

Pangaea

Answer 1

All the continents were once part of a super continent called…

Question 2

Mid ocean ridge

Answer 2

Mountain ranges in the middle of the ocean

Question 3

Sea floor spreading

Answer 3

New oceanic crust forms along a mid ocean ridge and older oceanic crust moves away from the ridge

Question 4

Normal polarity

Answer 4

A state in which magnetized objects such as compass needles will orient themselves to point north

Question 5

Magnetic reversal

Answer 5

The magnetic field reverses direction

Question 6

Reverse polarity

Answer 6

A state in which magnetized objects would reverse direction and orient themselves to point south

Question 7

Plate tectonics

Answer 7

Earths surface is made of rigid slabs of rock or plates that move with respect to each other

Question 8

Lithosphere

Answer 8

The cold and rigid outermost rock layer

Question 9

Divergent plate boundary

Answer 9

Forms when Two plates separate

Question 10

Transform plate boundary

Answer 10

Forms when two plates slide past eachother

Question 11

Subduction

Answer 11

The denser plate sinks below the more buoyant plate

Question 12

Convergent plate boundaries

Answer 12

Where two plates collide

Question 13

Convection

Answer 13

The circulation of material caused by differences in temperature and density

Question 14

Ridge push

Answer 14

Rising mantle material at mid ocean ridges creates the potential for plates to one away with a force

Question 15

Slab pull

Answer 15

As a slab sinks it pulls on the rest of the plate with a force