Terranne

a piece of lithosphere with a

unique geologic history.

Paleomagnetism

the study of the alighnment of 

magnetic minerals in rock.

Lithosphere

the thin outer shell of earth that is 

broken into several blocks.

Continental Drift

the hypothesis that the continents moved to 

their present postitions.

Transform Boundary

the boundary where two playes slide past 

one another horizontally.

Plate Tectonics

the explanation of why and how continents move.

Sea-Floor Spreading

the process by which magma rises to the surface through a rift and solidifies at a mid-ocean ridge.

Supercontinent Cycle

the process by which supercontinents form and 

break up over millions of years.

Pangaea

a supercontinent formed about

300 million years ago.

Rifting

the process by which a continent breaks apart.

How does sediment that is closer to a mid-ocean ridge compare to sediment that is farther away?

a) it is smaller

b) it is older

c) it is larger

d) it is younger

Built-up heat from the mantle that weakens

lithosphere causes?

a) atolls

b) cratons

c)rifting

d)accretion

Where do deep-ocean trenches form?

a) at convergent boundaries

b) at transform boundaries

c) in island arcs

d) in fracture zones

Which of the following was NOT a piece of evidence

Wegener found to support his hypothesis?

a) mountains of similar age in North America and Scotland

b) tracks of continents plowing throught ocean floor rock

c) identical Mesosaurus fossils in South America and Africa

d) debris from glaciers in southern Africa

North Americ and Eurasia were formed when

a rift seperated the continent of?

a) Pnthalassa

b)Pangaea

c) Laurasia

d) Gondwanaland

Convention, Ridge Push, and Slab Pull work 

together to produce?

a) fracture zones

b) earthquakes

c) continental lithosphere

d) constant tectonic plat motion

What is one way textonic plate movement affects climate?

a) it creates mountains that affect wind patterns

b) it keeps ice sheets from melting

c) it keeps air temperatures constant

d) it changes the location of the equator and the poles

The Himalaya Mountains were formed in a 

collision at a?

a) fracture zone

b)  divergent boundary

c) convergent boundary

d) transform boundary

The most conclusive proof for continental

drift was provided by?

a) changes in climatic patterns

b) the coastlines of continents on a map

c) identical fossils fond on two separate continents

d) evidence of sea-floor spreading

Wegener's hypothesis of continental drift was finally confirmed by?

a) continental coastlines that fit together

b) fossils from the same reptile found on two different continents

c) evidence supporting the idea of sea-floor spreading

d) the formation of mountaing ranges such as the Andes

The Pacific Ring of Fire is?

a) a mid-ocean ridge

b) a chain of volcanic islands

c) a rift valley

d) a zone of active volcanoes

Magnetic patterns on the ocean floor were puzzling 

because they?

a) indicated that all the rocks had reversed polarity

b) contradicted the idea of sea-floor spreading

c) showed alternating bands of normal and reversed polarity

d) were not symmetrical

An example of a divergent bounday is?

a) the Chilean trench along the west coast of South America

b) the sea between the Arabian Peninsula and Africa

c) the San Andreas Fault in California

d) the Himalaya Mountains

Tectonic plates are blocks of?

a) lithosphere

b) asthenosphere

c) magma

d) magnetic rock

Modern climates are a result of past movements of?

a) rain and snow

b) tectonic plates

c) populations of organisms

d) heat in Earth's interior

Tectonic plates can include?

a) only asthenosphere

b)both oceanic and continental crust

c) only continental crust

d) only oceanic crust

To assign ages to sea-floor rocks, scientists used?

a) a supercontinent map

b) a tectonic plate map

c) the geomagnetic reverse time scale

d) a mid-ocean ridge chart