Physical Geo 12 Ch6

One major effect of sea-floor spreading is:

• destroying old crust

• new crust is created

• mountains are formed

• recycling of crust

Which best explains the driving force behind tectonic plate movement?

• seismic activity

• the outer core moving

• sea-floor spreading

• continental drift

At mid-ocean ridges where sea-floor spreading occurs, the ocean crust that is the oldest is located where?

• at the sight of sea-floor spreading

• farthest from the sea-floor spreading

• closest to the sea-floor spreading

• right under the mantle

Viscosity of lava is:

• resistance to change

• resistance to harden

• resistance to flow

• resistance to change from magma to lava

Which of the following are places where volcanoes can occur?

• anticline zones

• hot spots

• divergent boundaries

• convergent boundaries

When two plates collide, what results are common?

• crust destroyed

• volcanic activity

• earthquakes

• mountain formation

Which type of plate boundary is this?

• divergent

• convergent

• transform

What would you be most likely to find at a convergent boundary between two pieces of continental crust?

• volcano

• mountain

• rift

what would you be most likely to find at a divergent boundary between two pieces of continental crust?

• mid-ocean ridge

• mountain

• rift

What is the hawaiian term for rough and rubbly lava?

• 'Ono grinds

• Pahoehoe

• A'a

• Pillow lava