Large Scale Changes to Earth

The thicker, less dense crusts is ____.

• oceanic crust

• continental crust

• convection currents

Tags

NGSS.MS-ESS2-1

The thinner, more dense crusts is ____.

• oceanic crust

• continental crust

• convection currents

Tags

NGSS.MS-ESS2-1

The plates on Earth's surface move because of ___.

• magic

• strong sea winds

• gravity pulling them around the planet

• convection currents in the mantle

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

A boundary where plates pull apart from each other is called ____.

• divergent

• convergent

• transform

• a hot spot

Tags

NGSS.MS-ESS2-3

A boundary where plates push together and crash into each other is called ____.

• divergent

• convergent

• transform

• a hot spot

Tags

NGSS.MS-ESS2-3

A boundary where plates slip past each other is called ____.

• divergent

• convergent

• transform

• a hot spot

Tags

NGSS.MS-ESS2-3

A rift valley (like this one in Africa) occurs at _____.

• convergent boundaries

• divergent boundaries

• transform boundaries

• hot spots

Tags

NGSS.MS-ESS2-2

A new ocean basin (like the Red Sea) occurs at _____.

• convergent boundaries

• divergent boundaries

• transform boundaries

• hot spots

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Over time, a mature ocean (like the Atlantic) occurs at _____.

• convergent boundaries

• divergent boundaries

• transform boundaries

• hot spots

Tags

NGSS.MS-ESS2-2

Select ALL of the answers that are true about seafloor spreading.

• occurs at convergent boundaries

• occurs at divergent boundaries

• Magma leaks up, hardens, and becomes part of the plates.

• The floor of the ocean actually spreads out and becomes larger.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3