Earth's Systems, Structures and Processes

A difference between the oceanic crust and the continental crust is that the oceanic crust is

• difference between the oceanic crust and the continental crust is that the oceanic crust is
  composed chiefly of sedimentary rocks.
• more dense than the continental crust.
• older than the continental crust.
• continually being created.

The picture represents the formation of the Himalaya Mountains. Which two plates collided with each other to form the Himalaya Mountains?

• Nazca and Eurasian
• Indo-Australian and Eurasian
• North American and Antarctic
• South American and Indo-Australian

The picture shows a model of the internal structure of Earth.  Which evidence best supports this model?

• evaluations of seismic data
• direct observations of the layers
• samples of rocks from the layers
• explanations of the rock cycle
  

Which event most likely caused the formation of folded mountain ranges?

• Tectonic plates on the earth pushed together.
• Tectonic plates on the earth pulled apart.
• Tectonic plates on the earth slid past each other.
• Tectonic plates on the earth broke into small pieces.
  

Earthquakes occur along the San Andreas Fault in California. Which statement best describes plate motion in the area during the time between earthquakes?

• Plate motion stops, and plate tension decreases.
• Plate motion continues, and plate tension increases.
• Plate motion stops, and only the mantle moves.
• Plate motion reverses, and plates return to their original positions.
  

Which diagram shows the relative direction of tectonic plate movement that forms divergent boundaries?

• A
• B
• C
• D

Which event most likely takes place as the result of crustal movement along transform boundaries?

• earthquakes
• volcanic activity
• mountain building
• trenches

Which of the following is the most likely cause of earthquakes?

• shifting rock layers
• crashing meteorites
• rotation of the core
• magnetic force
  

What is the most prominent land feature formed by the convergence of the Indo-Australian and Eurasian plates?

• China
• Australia
• Ural Mountains
• Himalaya Mountains
  

Mountains are most likely formed

• when glaciers melt.
• from earthquakes.
• when land sinks.
• along tectonic plates.