NAME_____________
I.
Multiple Choice
_____1. What forms when one plate slides past another plate? a. transform plate c. divergent plate b. subduction zone d. mid-ocean ridge
_____2. What is the cause of the volcanoes on Hawaii? a. rift zone b. divergent plate boundary c. hot spot d. convergent plate boundary
_____3. What theory states that plates move around on the asthenosphere? a. continental drift b. subduction c. seafloor spreading d. plate tectonics
_____4. What is the name of the large, ancient landmass that consisted of all the continents? a. Pangaea c. America b. lithosphere d. Wegner land
_____5. This is the piece of the lithosphere that moves over a plasticlike layer. a. plate b. continent c. Pangaea d. trench
_____6. What is the driving force for plate movement? a. subduction b. spreading c. convection d. asthenosphere
_____7. This is the theory that was proposed by Harry Hess that includes processes along mid-ocean ridges. a. continental spreading b. plate tectonics c. seafloor spreading d. continental drift
_____8. This is composed of oceanic or continental crust and upper mantle. a. inner core c. outer core

b. lithosphere d. mantle
_____9. Which of the following best describes how the surface of the
Earth has changed over time? a.
High mountains wear down until most of the Earth is at sea level b.
A flat surface is gradually pushed up into higher and higher mountains until the Earth is covered with mountains c.
High mountains wear down as new mountains are continuously being formed, over and over again. d.
High mountains and flat plains stay side by side with little change
_____10. The splitting of the continental blocks result in the formation of? a. new continents b. crust c. volcanoes d. new oceans
_____11. A chain of volcanoes is located near the western coast of a continent. There is a plate boundary nearby. Which of the following choices describes how the volcanoes probably formed? a.
two continental plates slid by each other b.
a continental plate and an oceanic plate collided c.
two oceanic plates collided d.
two oceanic plates pulled apart
_____12. In 1968, the Glomar Challenger, began probing the ocean b to? a. retrieve fossils b. to find Pangaea c. to find oil d. to date the ocean floor
_____13. The youngest seafloor is found? a. near the continents b. along the fault c. along the mid-oceanic ridges d. near volcanoes
_____14. The ocean floor is generally youngest a. Along mid-ocean ridges c. In subduction zones b. Where it is deepest d. Along continental margins
_____15. At a convergent plate boundary, such as a subduction zone a.
Oceanic crust will “sink” under the continental crust because it is composed of denser material.

b.
Continental crust will melt due to the heat and pressure of the collision of the two plates. c.
Only ocean plates move, so the continents retain their original position in relation to the oceans. d.
Continental crust sinks because it is thicker, and therefore heavier than the oceanic crust.
II.
Short Answer
16.
List the three types of boundaries. Use arrows to show the movement, and list the type of stress associated with each.
Boundary Movement Stress
A.
B.
C.
17.
Discuss why earthquakes and volcanoes often occur in the same location.
18.
Discuss three pieces of evidence that supports Pangaea.
19. Discuss the three ways collisions can occur and what forms from each collision.
20. Scientist have evidence that the landforms we see on Earth, such as mountains, islands, and canyons, as well as the shapes of continents, are the result of constructive and destructive forces at work over a long period of time. Describe in detail two pieces of evidence that show that landforms on
Earth are constantly changing. Provide a specific example for each piece of evidence.

21. A species may become extinct if environmental changes occur and the species does not adapt quickly enough to the changes. a. Identify an environmental change that might cause a species to become extinct and identify a species that would likely be affected by such a change. b. Describe how extinction of one species can affect other organisms in the ecosystem.