Plate Tectonics Quiz

Find the Nazca and the South American Plate. This is an example of two plates converging. The denser oceanic plate (Nazca) moves under the continental plate (South American Plate). What features are likely found here?

• Rift Valleys

• Volcanoes

• Folded Mountains

• Ocean Basins

The large plates move across the surface of the Earth by what process?

• Convection

• Radiation

• Condensation

• Conduction

The Indian Plate (far right of plate picture) converges with the Eurasian Plate. When two continental plates converge what crustal feature is expected to form?

• Rift Valley

• Volcanoes

• Folded Mountains

• Ocean Basin

Below is a picture of sea-floor spreading. How are the ocean crusts moving?

• Converging

• Diverging

• Sliding

• No movement

The San Andreas Fault in California is known as an active earthquake area. What type of boundary is it?

• Converging

• Diverging

• Transform

• Sea Floor Spreading

When two oceanic plate boundaries meet, what crustal feature forms?

• Plate Tectonics

• Sea Floor Spreading

• Folded Mountains

• Volcanic Island Arc

When an oceanic crust meets a continental crust, what occurs?

• The oceanic crust moves under the continental crust resulting in volcanoes.

• The oceanic crust moves over the continental crust resulting in volcanoes.

• The two crusts converge forming folded mountains such as the Himalayas.

• Both crusts are subducted down into the mantle.

What geological feature provides evidence that supports the theory of plate tectonics?

• Mid-Atlantic Ridge

• Grand Canyon

• Mount Everest

• Sahara Desert

These rocks provide evidence of plate movement because, as we look at rocks farther and farther from the ridge, the rocks-

• have higher iron content.

• are made up of smaller particles.

• become thicker and thicker.

• are consistently older.

The observation is used to support the idea that-

• the continental shelves of these two continents are made of the same type of rock material.

• the tectonic plates beneath these continents are roughly the same age.

• these continents were joined in the past and have moved apart since that time.

• the material that makes up these two continental shelves comes from sediments eroded from the continents.