Science Chapter 1: Plate Techtonics

Front 1

Geologists

Back 1

scientists who study the forces that make and shape planet Earth

Front 2

The 3 main layers of earth's interior

Back 2

the crust, the mantle, and the core

Front 3

Crust

Back 3

outer skin, 5-40km thick, consists of basalt which is dense and granite which is less dense

Front 4

Mantle

Back 4

solid, lithosphere-top layer 100km thick, asthenospher-bottom layer 3,000km thick and soft

Front 5

Core

Back 5

liquid outer core, solid inner core

Front 6

radiation

Back 6

transfer of energy through empty space

Front 7

Conduction

Back 7

heat transfer by directy contact of particles of matter

Front 8

Convection

Back 8

heat transfer by movement of a heated fluid

Front 9

Alfred Wegner

Back 9

came up with theory of pangea (supercontinent) that began to break apart known as continental drift.

Front 10

Evidence for continental drift

Back 10

Landforms, fossils, climate

Front 11

discoverer of sea floor spreading

Back 11

harry hess

Front 12

Sea floor spreading

Back 12

molten material rises from the mantle and erupts and spreads out to form ridges

Front 13

Evidence for sea floor spreading

Back 13

molten material, magnetic stripes, and drilling sample

Front 14

Subduction

Back 14

process by which the ocean floor sinks beneath a deepocean trench and back into the mantle

Front 15

Plate techtonics

Back 15

states that pices of earth's lithosphere are in constant, slow motion, driven by convection currents in the mantle

Front 16

Plate Boundaries

Back 16

divergent, convergent, and transform

Front 17

Transform Boundaries

Back 17

place where two plates slip past each other, moving in opposite directions. earthquakes occur

Front 18

Divergent Boundaries

Back 18

place where two plates move apart, or diverge. creates rift valley

Front 19

Convergent Boundaries

Back 19

place where two plates come together, or converge. creating a collision.