Plate Tectonics and Seafloor Spreading Quiz

What are the three main types of plate boundaries?

• Subduction, collision, and spreading boundaries

• Convergent, divergent, and transform boundaries

• Mountain, valley, and rift boundaries

• Oceanic, continental, and island boundaries

What are the key pieces of evidence for seafloor spreading?

• Magnetic striping, age of the oceanic crust, and mid-ocean ridges

• Moon phases, ocean currents, and tides

• Volcanic eruptions, continental drift, and earthquakes

• Fossil records, mountain ranges, and climate change

Explain the mechanism of seafloor spreading.

• Seafloor spreading is caused by the gravitational pull of the moon

• Seafloor spreading is a result of tectonic plates colliding

• New oceanic crust is formed through volcanic activity and then gradually moves away from the mid-ocean ridge, creating new seafloor.

• Seafloor spreading occurs due to the melting of polar ice caps

What is the role of subduction in plate tectonics?

• It allows for the recycling of old oceanic crust and the formation of volcanic arcs.

• It causes the formation of new oceanic crust

• It has no impact on plate tectonics

• It leads to the formation of mountain ranges

How are mid-ocean ridges formed?

• By the movement of tectonic plates away from each other

• By the cooling and solidification of molten lava

• By the erosion of the ocean floor by waves and currents

• Seafloor spreading and magma rising to create new oceanic crust

What type of plate boundary is characterized by plates moving away from each other?

• Subduction plate boundary

• Convergent plate boundary

• Transform plate boundary

• Divergent plate boundary

What technology was instrumental in providing evidence for seafloor spreading?

• Satellite imaging

• Drone photography

• Sonar mapping

• Underwater cameras

Describe the process of subduction and its impact on plate tectonics.

• Subduction is the process of tectonic plates sliding past each other, creating deep ocean trenches

• Subduction is the process where one tectonic plate is forced underneath another plate, usually due to differences in density. This process can lead to the formation of deep ocean trenches, volcanic arcs, and earthquakes.

• Subduction is the process of tectonic plates colliding and fusing together, forming mountain ranges

• Subduction is the process of tectonic plates moving away from each other, causing earthquakes

What are the major forces driving seafloor spreading?

• Ocean currents and wind patterns

• Solar radiation and lunar gravity

• Mantle convection and movement of tectonic plates

• Volcanic eruptions and erosion

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

• It is a type of decorative pattern found on the seafloor

• It is caused by the presence of magnetic rocks in the ocean

• It has no significance in understanding seafloor spreading

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