Continental Drift & Plate Tectonics #1

The hypothesis that today's continents were once part of a single landmass.

• Continental Drift

• Plate Tectonics

What causes sea-floor spreading?

• new oceanic lithosphere forms as magma rises to the surface

• thin & solid outermost layer of the Earth above the mantle

• continents were once a single land mass

• seismic waves

Tags

NGSS.MS-ESS2-3

What causes magnetic reversals?

• sea-floor spreading

• the mantle's convection currents

• the mid-ocean ridge spreading center

• when Earth's magnetic poles change places or flips

At mid-ocean ridges...

• the crust is older

• sea-floor spreading occurs

• oceanic lithosphere is destroyed

• tectonic plates are colliding

Tags

NGSS.MS-ESS2-2

A plate boundary where 2 plates slide past each other horizontally

• convergent

• divergent

• transform

• uniform

A plate boundary where tectonic plates move toward one another

• convergent

• divergent

• transform

• uniform

A plate boundary where lithospheric plates pull away from each other

• convergent

• divergent

• transform

• uniform

Process where 1 tectonic plate bends & slides beneath another plate at a convergent boundary

• conduction

• convection

• subduction

• abduction

Tags

NGSS.MS-ESS2-3

Continental mountain ranges are usually associated with

• seafloor spreading

• convergent boundaries

• transform boundaries

• divergent boundaries

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Which of the following contributes to the movement of Earth's tectonic plates?

• convection currents below the lithosphere

• energy from the Sun

• magnetic-pole reversals

• faults in mountain ranges

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2