Geological Differences between Oceanic and Continental Crust

What is a primary difference in composition between oceanic and continental crust?

• Oceanic crust is primarily composed of granite, while continental crust is composed of basalt.

• Oceanic crust is primarily composed of basalt, while continental crust is composed of granite.

• Both oceanic and continental crust have identical compositions.

• Oceanic crust is composed of sedimentary rocks, while continental crust is composed of igneous rocks.

Which of the following statements is true regarding the thickness of oceanic and continental crust?

• Oceanic crust is generally thicker than continental crust.

• Continental crust is generally thicker than oceanic crust.

• Oceanic and continental crust have approximately the same thickness.

• The thickness of both oceanic and continental crust varies widely and cannot be generalized.

What geological feature is typically associated with continental crust but rarely found in oceanic crust?

• Mid-ocean ridges

• Trenches

• Volcanic arcs

• Abyssal plains

Which of the following statements accurately describes a characteristic of oceanic crust?

• It is less dense than continental crust.

• It is older than continental crust.

• It is predominantly composed of granite.

• It is continuously forming at mid-ocean ridges.

What is a common characteristic of continental crust that distinguishes it from oceanic crust?

• Higher density

• Younger age

• Thicker composition

• Presence of granitic rocks

In which of the following locations would you most likely find oceanic crust?

• At the center of continents

• Surrounding mid-ocean ridges

• Comprising volcanic arcs

• Forming mountain ranges

What process leads to the creation of new oceanic crust?

• Erosion

• Subduction

• Uplift

• Weathering

Which type of crust is more likely to experience subduction?

• Oceanic crust

• Continental crust

• Both oceanic and continental crust

• Neither oceanic nor continental crust

What is a key difference in age between oceanic and continental crust?

• Oceanic crust is generally older than continental crust.

• Continental crust is generally older than oceanic crust.

• Both oceanic and continental crust have similar ages.

• The age of both oceanic and continental crust is unpredictable.

Which of the following is a characteristic of continental margins?

• Deep-sea trenches

• Volcanic arcs

• Abyssal plains

• Broad continental shelves