This is a CLASS COPY – Do NOT write on this paper! – Return this paper to your teacher.
Unit B Earth’s Changing Surface - Quiz 1 - Activities 0, 1, 2
FORM A
Multiple Choice – On your answer sheet write the letter of the ‘BEST’ answer to each question below.
1. If you used plate tectonics to predict where the next earthquake or volcano would be, you should
find it…
a. along boundaries between lithospheric plates
b. where one has not happened in at least 10 million years
c. in the interior of any continent
d. where a continental plate is subducted under an oceanic plate
2. What event is most likely to occur when an oceanic plate collides with a continental plate?
a.
b.
c.
d.
The oceanic plate will go under the continental plate.
The continental plate will go under the oceanic plate.
A mid-oceanic ridge will form.
A peninsula will form.
*****************Base your answers to questions 3–5 on the diagram below. *******************
The map below shows measurements of movements at GPS recording stations in North America. Each
station has a four-character symbol that is displayed to the right of the triangle. Arrows show the rate
and direction of the motion of the Earth’s surface at that station.
3. Which of the stations is moving the fastest?
a. PLTO
b. QUIN
c. CICE
d. BRMU
4. Which direction is the plate at the BRMU station moving?
a. south
b. north
c. southwest
d. northwest
5. How fast is the plate at the BRMU station moving?
a. about 20 mm/yr
b. slower than 20 mm/yr
c. faster than 20 mm/yr
This is a CLASS COPY – Do NOT write on this paper! – Return this paper to your teacher.
6. Which of the following patterns is NOT found on world map such as the one you developed in Activity 0?
a.
b.
c.
d.
Mountain ranges on the edges of continents are often found near ocean trenches.
Earthquakes and volcanoes are common along the edges of the Pacific Ocean.
Mid-ocean ridges are found in the center of the each of the three major oceans.
Earthquakes and volcanoes are rarely found in the polar regions.
****************** Base your answers to questions 7–11 on the diagram below. *****************
The diagram shows a portion of the Earth’s oceanic crust in the vicinity of the mid-Atlantic ridge. The
stripes in the diagram represent magnetic bands of rock formed in the oceanic crust. Letters A, B, C, D
and E represent locations on the sea floor.
7. Rock samples from any spot on the ocean floor would be composed of:
a. granite (less dense)
b. basalt (more dense)
8 What do the arrows on the diagram represent?
a. the flow of ocean water at the time the rock cooled
b. temperature of the rock when the rock was formed
c. the polarity of the Earth’s magnetic field at the time of the rock formation
d. the type of rock
9. The oldest parts of the crust are
a. A and E
b. B and D
c. C and E
d. D and E
10. If you had to extend the diagram to the right to show the ocean plate bumping into a continental
plate, which of the following features would you show?
a. trench
d. all of the above
b. subduction zone
e. none of the above
c. volcanic mountains
11. The Earth is about 4.6 billion years old, but the oldest ocean floor is only about 200 million years
old because…
a. the ocean floor keeps expanding throughout time.
b. rock can only survive for 500 million years then it melts.
c. the ocean floor is constantly being destroyed when it goes under a continental plate.
d. the Earth’s crust just began to form 200 million years ago.
This is a CLASS COPY – Do NOT write on this paper! – Return this paper to your teacher.
*****************Use the map below to answer questions 12-16. *****************
12. What type of geologic feature would you expect to find along the west coast of South America?
a. high plains
b. a chain of volcanic mountains
c. an oceanic ridge d. a transform fault
13. What type of boundary occurs between the South American Plate and the Nazca Plate?
a. Divergent continental margin
c. Transform plate boundary
b. Convergent plate boundary
d. Passive continental margin
14. At which of these boundaries would you expect to find oceanic crust being created?
a. Between the South America and Nazca plates
b. Between the Northern Pacific and North American plates
c. Between the North American and Eurasian plates
15. What kind of boundary is found at the San Andreas fault in southern California?
a. convergent
b. divergent
c. transform
16. What kind of boundary is between the North American plate and the Eurasian plate?
a. convergent
b. divergent
c. transform
This is a CLASS COPY – Do NOT write on this paper! – Return this paper to your teacher.
EXTRA CREDIT:
Use the GPS time series data for GPS recording station CASA in California to answer questions EC1-EC3.
[NOTE: negative numbers mean movement in the opposite direction]
EC1.
The top graph shows that CASA moved at a speed of:
a. 10.9 mm/yr West
c. 31.3 mm/yr North
b. 31.3 mm/yr East
d. 31.3 mm/yr South
EC2.
The elevation of station CASA during the recording period has ___________ .
a. increased
b. decreased
c. not changed
EC3. The middle graph indicates that station CASA moved at a rate of:
a. 31.3 mm/yr North
c. 10.9 mm/yr West
b. 10.9 mm/yr East
d. 10.9 mm/yr South