Plate Boundaries & Crustal Features Topographic Maps

Aluminum has an approximate density of 2.70 g/cm³. The table above shows the measurements taken of four different unknown samples during a science investigation. Which of the samples could be a sample of Aluminum?

• Sample T
• Sample S
• Sample R
• Sample Q

The model shows a plate boundary.  Arrows have been added to indicate the movement of the plates.  What plate boundary feature is shown?

• A fault formed at an active transform 
• A volcano formed at an active   transform boundary
• A valley formed at an active   divergent boundary 
• A ridge formed by an inactive   convergent boundary

A sample of crust has a mass of 6.4 g and a volume of 2.0 cm³. The sample is most likely composed of which mineral?

• Shale
• Rhyolite
• Basalt
• Graphite

Alfred Wegener’s theory of continental drift was crucial to the development of plate tectonic theory today. Which of the following data was used by Wegener to support his hypothesis?

I. Identical fossils of plants and animals on continents separated by ocean.

II. Fossils of plants and animals that lived in climates that did not match the modern environment.

III. Similar mineral formations and crustal features on continents separated by ocean.

IV. Land formations that had undergone similar patterns of weathering.

• Only I

• III and IV

• I, II, and III

• I, II, III, and IV

The map above shows the location of the Andes Mountains on the western coast of South America. Which of the following best describes the geologic processes responsible for the formation of the Andes Mountains?

• The Nazca and South American plates have spaces where magma is erupting from the sea floor.
• The Nazca and South American plates are diverging.
• The Nazca and South American plates are transforming.
• The Nazca and South American plates are converging.

The satellite image below shows a ship channel between South Padre Island and Boca Chica beach in South Texas.  Sand is sometimes removed from the ship channel through a process called dredging to make it easier for ships to travel through.  Recently sand from the bottom of the channel was moved to area beaches.  Without this transfer of sand, what would most likely occur in this area in the future?

• The ship channel would become wider, and the island would sink into the Gulf of Mexico.
• The ship channel would become narrower, and the island would become completely covered with water.
• The ship channel would become shallower, and the beach would become narrower.
•  The ship channel would become deeper, and the island would move west toward the mainland.

The satellite photograph below shows the coastline for the city of Banda Aceh, on the island of Sumatra. 
How will this coastline most likely change over time?

• It will maintain its current formation.
• It will extend further as new land is created.
• It will recede as the edge erodes.
• It will rise up as sediment is deposited.

The model below shows two continental   plates.  The folded mountains in this   model form at which type of plate   boundary?

• Divergent boundary
• Convergent boundary
• Transform boundary
• Subduction boundary

A section of a topographic map from Big Bend National Park is shown below.
What is the difference in elevation in feet between Point Y and Point Z on the map?

• 6920 feet 
• 520 feet
• 200 feet
• 40 feet

The diagram below shows a model of the movement of two tectonic plates.  When the plates collide, one plate often moves below the other plate.  The rising magma that can result from this type of plate movement may produce – 

• Seafloor spreading
• Deep-sea sediment
• Volcanic islands
• Fossil layers