Seafloor Spreading Quiz

What is the process of seafloor spreading?

• Erosion of existing oceanic crust due to volcanic activity

• Formation of new continental crust and its movement towards the mid-ocean ridge

• Formation of new oceanic crust and its movement away from the mid-ocean ridge

• Creation of deep ocean trenches through tectonic plate collision

What are mid-ocean ridges and how are they related to seafloor spreading?

• Mid-ocean ridges are the result of volcanic activity and have no relation to seafloor spreading

• Mid-ocean ridges are formed by erosion and have no relation to seafloor spreading

• Mid-ocean ridges are underwater mountain ranges formed by tectonic plates moving apart, and they are related to seafloor spreading as new oceanic crust is formed at the ridges.

• Mid-ocean ridges are caused by the collision of tectonic plates and have no relation to seafloor spreading

Explain the concept of magnetic striping and its significance in seafloor spreading.

• It provides evidence for the process of plate tectonics and the movement of the Earth's crust.

• It is caused by the presence of giant magnets under the seafloor

• It is a natural phenomenon that occurs due to the reflection of sunlight on the water surface

• It is a result of pollution in the ocean causing discoloration of the water

How is the age of the ocean floor used as evidence for seafloor spreading?

• The age of the ocean floor increases with distance from the mid-ocean ridge.

• The age of the ocean floor decreases with distance from the mid-ocean ridge.

• The age of the ocean floor remains constant regardless of distance from the mid-ocean ridge.

• The age of the ocean floor is not related to seafloor spreading.

What role do convection currents play in the process of seafloor spreading?

• They control the Earth's magnetic field

• They drive the movement of tectonic plates

• They create new landmasses

• They cause earthquakes

What are the major pieces of evidence that support the theory of seafloor spreading?

• Color of the ocean floor

• Presence of mid-ocean ridges, magnetic striping on the ocean floor, and the age of the oceanic crust

• Temperature of the seawater

• Number of fish species in the ocean

Describe the technology and methods used to study seafloor spreading.

• Satellite imaging and photography

• Underwater drones and cameras

• Weather forecasting and oceanography

• Sonar mapping, magnetometers, seismic profiling, and rock sample analysis

Explain the relationship between seafloor spreading and plate tectonics.

• Plate tectonics has no impact on seafloor spreading

• Seafloor spreading only occurs in lakes and rivers

• Seafloor spreading is the mechanism by which new oceanic crust is formed at mid-ocean ridges, and it is a fundamental part of the theory of plate tectonics.

• Seafloor spreading is caused by volcanic activity

What are the implications of seafloor spreading on the Earth's geology and geography?

• It causes the Earth's geology and geography to remain unchanged

• It has no impact on the movement of tectonic plates or the formation of new ocean basins

• It contributes to the movement of tectonic plates and the formation of new ocean basins, which can lead to the creation of new landforms and the shifting of continents.

• It leads to the shrinking of ocean basins and the disappearance of landforms

Discuss the significance of seafloor spreading in understanding the history of the Earth's crust.

• It is caused by the gravitational pull of the moon

• It provides evidence for the theory of plate tectonics and helps explain the movement of the Earth's lithospheric plates.

• It has no significance in understanding the history of the Earth's crust

• It only affects the temperature of the ocean water