Unit 5 - Plate Tectonics

Seafloor spreading occurs because _________.

• new material is being added to the asthenosphere

• earthquakes break apart the ocean floor

• sediments accumulate at the area of spreading

• molten material beneath Earth's crust rises to the surface

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Plates slide past one another at ___________.

• subduction zones

• transform boundaries

• convection currents

• divergent boundaries

A lack of explanation for continental drift prevented many scientists from accepting that a single supercontinent called _______ once existed

• Glomar

• Glossopteris

• Pangaea

• Wegener

Tags

NGSS.HS-ESS1-5

Plates move apart at ________ boundaries.

• convergent

• stable

• divergent

• transform

The hypotheses that continents have slowly moved to their current locations is called ________.

• continental drift

• continental slope

• magnetic reversal

• convection

Tags

NGSS.MS-ESS2-3

The result of plate movement can be seen at _____.

• abyssal plains

• plate boundaries

• plate centers

• ocean margins

Tags

NGSS.MS-ESS2-3

Scientist have observed that the continents move apart or come together at speeds of a few centimeters per _______.

• century

• decade

• day

• year

Tags

NGSS.MS-ESS2-3

The youngest rocks on the ocean floor are located _______.

• near continents

• far from mid-ocean ridges

• at mid-ocean ridges

• near Asia

Plates move together at a(n) _________.

• mid-ocean ridges

• convergent boundary

• subduction zone

Tags

NGSS.MS-ESS2-3

One plate is forced under another in a(n) _________.

• mid-ocean ridges

• convergent boundary

• subduction zone