Chapter 6 Earth Science

What are the layers of the Earth from the surface to the center?

• inner core, outer core, crust, mantle

• crust, mantle, outer core, inner core

• crust, outer core, mantle, inner core

• inner core, outer core, mantle, crust

Tectonic plates are part of Earth's ___________________.

• Lithosphere

• Asthenosphere

• Mantle

• Outer core

Which of these did Wegner not use to support his theory of continental drift?

• similar rocks were found on different continents

• the sea-floor was spreading forming younger rock near the center

• fossils from ancient organisms were found on more than one continent

• there was evidence of glacial striations on continents with warm weather

Which is true about the rock on the seafloor?

• The rock is younger near the ridge and older near the trench

• The rock is younger near the trench and older near the ridge

• The rock is much older than continental rock

• The rock is less dense than continental rock

What is the main force moving the tectonic plates?

• convection currents in the asthenosphere

• strong flowing water in the oceans

• convection currents in the lithosphere

• Gravity

In which era did Pangea form?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

What occurs at a transform boundary?

• plates scrape past each other

• plates pull away from each other

• plates push against each other

• plates stay in place

Two continental plates collide. What is formed?

• A volcanic mountain

• A folded mountain range

• An earthquake

• One plate will subduct beneath the other

Where does new crust form?

• at a divergent boundary

• at a convergent boundary

• at a transform boundary

• in a trench

What forms at a convergent continental-oceanic boundary?

• Volcanic mountains

• Island arcs

• Hot spots

• New crust