Unit 6 Part 2 Plate Tectonics

Which theory states that Earth’s crust and rigid upper mantle move in different directions and at different rates over Earth’s surface?

• ridge push and slab pull

• seafloor spreading

• convergence

• plate tectonics

Tags

NGSS.MS-ESS2-3

Tectonic plates interact at places called plate ________ .

• reversals

• boundaries.

• regions

• subductions

Places where tectonic plates move apart are called __________ .

• convergent boundaries.

• transform boundaries.

• subduction zones.

• divergent boundaries.

Where are most divergent boundaries found?

• on the seafloor

• at formative boundaries

• along coastlines

• at subduction zones

What happens along a divergent boundary?

• Continental mountain ranges form.

• New ocean crust forms.

• Oceanic plates are subducted into the mantle.

• Ocean basins become smaller.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

The Mid-Atlantic Ridge is an example of a _________ .

• convergent boundary.

• subduction zone.

• divergent boundary.

• transform boundary.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Places where tectonic plates come together are called _______ .

• divergent boundaries.

• convergent boundaries.

• transformative boundaries.

• rift valleys.

Tags

NGSS.MS-ESS2-3

Convergent boundaries are classified according to the _________ .

• types of fossils found at the boundaries.

• rate at which the plates collide.

• compass direction of movement of the plates.

• type of crust involved.

Oceanic crust is made mostly of ____________ .

• granite

• basalt

• water

• sediments

Which of the following features forms when two oceanic plates converge?

• magnetic reversal patterns

• divergent boundaries

• subduction zones

• rift valleys