Plate Tectonics

​ (a)   was proposed by ​ (b)   and suggested that the ​ (c)   are in constant motion.

• Continental drift
• Alfred Wegener
• continents
• Harry Hess
• Seafloor Spreading
• oceans

The earth's plates, rigid slabs of rock, "float" on the ___ .

• asthenosphere

• lithosphere

• mantle

• granitic rock

The earth's outer shell is divided into slabs of rock called ______ .

• continental plates

• crustal plates

• trench plates

• tectonic plates

What is a driving force behind the movement of the plates?

• 
• 
• 
• 

Place each label in the correct category.

Groups:

(a) Continental Crust

,

(b) Oceanic Crust

• recycles

• less dense

• older

• granite

• basltic

• younger

Match the following

• divergent

• 
• transform

• 
• convergent

• 

At which plate boundary is new crust formed?

• divergent

• convergent

• continental

• transform

What types of landforms are formed at convergent boundaries?

(Select all that apply)

• volcanoes

• new crust

• trenches

• mountains

What is the WHOLE AREA called where the oceanic crust goes beneath the continental crust?

• subtraction zone

• section zone

• secondary zone

• subduction zone

Drag the labels to the correct the locations on the diagram.

a

b

c

d

e

convergent boundary

subduction

Mid-ocean Ridge

trench

divergent boundary