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- 1. Multiple Choice
Scientists recently discovered that rocks collected from the Franklin Mountains in West Tests and rocks collected from mountains in eastern Antarctica were exactly the same age. Further research showed that the rocks were chemically and geologically the same and came from the same magma source. This discovery provides evidence of--
coastal erosion
plate tectonics
ocean currents
glacial melting
- 2. Multiple Choice
Which statement best describes the geologic process that is most likely responsible for the formation of mountains?
They are along a transform plate boundary that is no longer active, so erosion is creating deep valleys.
They are along a transform plate boundary in which plates are currently moving side by side, causing earthquakes and faults
They are along a plate boundary in which plates are currently converging, causing uplift and steep slopes.
They are along a plate boundary in which plates diverged in the distance past, allowing new rock to build up.
- 3. Multiple Choice
A mid-ocean RIDGE is located at the boundary of two tectonic plates. Which diagram correctly models the relative plate motion on each side of a mid ocean ridge?
- 4. Multiple Choice
Rift valleys can from when fractures in Earth's crust widen. The valley walls slowly move at a rate of only a few millimeters a year. Which of these best describes the type of tectonic activity that forms rift valleys?
Rift valleys from where a continental plate moves under an oceanic plate
Rift valleys form where a plate slides horizontally past another plate
Rift valleys from where two plates move away from each other.
Rift valleys form where an oceanic plate moves under another oceanic plate.
- 5. Multiple Choice
The San Andreas fault is a transform fault. The map below shows a student's approximation of where the fault line crosses through the United States. Students were asked to make maps predicting which way land would most likely move over thousands of years.
- 6. Multiple Choice
A mid- ocean ridge separates the Pacific plate and the Nazca plate off the western coast of South America. Which statement best describes the relative motions of the Pacific and Nazca plates?
The Pacific and Nazca plates are moth moving to the east.
The Pacific and Nazca plates are both moving to the west
The Pacific plate is moving to the west, and the Nazca plate is moving to the east.
The Pacific plate is moving to the east, and the Nazca plate is moving to the west.
- 7. Multiple Choice
The image shows a plate boundary. Arrows have been added to indicate the movement of the plates.What plate boundary feature is also shown?
A ridge formed by an inactive convergent boundary
A valley forming at an active divergent boundary
A fault forming at an active transform boundary
A volcano formed by an active transform boundary
- 8. Multiple Choice
The map shows the locations of four active volcanoes in the Caribbean Sea. What do these volcanoes indicate about plate tectonics in the region?
The volcanoes form an island arc, indicating a converging plate boundary
The volcanoes form a line, indicating a diverging plate boundary.
Two plates are moving past each other, causing faulting and magma formation.
Two plates are moving apart, creating new seafloor
- 9. Multiple Choice
The diagram shows a model of the movement of two tectonic plates. When the plates collide, on plate often moves below the other plate. The rising magma that can result from this type of plate movement may produce-
fossil layers
volcanic islands
deep-sea sediment
seafloor spreading
- 10. Multiple Choice
The model below shows two continental plates. The folded mountains in this model form at which type of plate boundary?
Transform boundary
Divergent boundary
Subduction boundary
Convergent boundary
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