Plate Tectonics and Volcanoes

What are the three main types of plate boundaries?

• Subduction boundaries, collision boundaries, and sliding boundaries

• Divergent boundaries, convergent boundaries, and transform boundaries

How do divergent plate boundaries contribute to the formation of new crust?

• Magma from the mantle rises to fill the gap between separating tectonic plates, solidifies, and forms new crust.

• Divergent plate boundaries lead to the formation of mountains, not new crust

• The movement of tectonic plates at divergent boundaries has no effect on crust formation

• Divergent plate boundaries cause the existing crust to break apart and disappear

Explain the effects of plate tectonics on the Earth's surface features.

• Plate tectonics only cause minor changes on the Earth's surface

• Plate tectonics result in the disappearance of mountains and volcanoes

• Plate tectonics have no effect on the Earth's surface features

• Plate tectonics cause the movement of Earth's lithosphere, leading to the formation of mountains, earthquakes, volcanoes, and oceanic trenches.

What causes volcanic eruptions?

• The release of magma from beneath the Earth's crust causes volcanic eruptions.

• Volcanic eruptions are caused by excessive mining activities

• Volcanic eruptions are caused by the movement of tectonic plates

• Volcanic eruptions are caused by heavy rainfall

Describe the relationship between tectonic plates and continental drift.

• The movement of tectonic plates is responsible for the phenomenon of continental drift.

• The movement of tectonic plates is unrelated to continental drift

• Continental drift is caused by the rotation of the Earth

• Tectonic plates have no impact on continental drift

What are the primary effects of volcanic eruptions on the environment?

• The primary effects of volcanic eruptions on the environment include the release of ash, gases, and lava, which can lead to air pollution, destruction of vegetation, and alteration of the landscape.

• Increase in wildlife population

• Decrease in seismic activity

• Improvement in air quality

How do transform plate boundaries differ from convergent and divergent boundaries?

• Transform plate boundaries involve vertical movement of plates

• Convergent boundaries involve horizontal sliding of plates

• Transform plate boundaries involve horizontal sliding of plates, while convergent and divergent boundaries involve different types of plate movement such as collision and separation.

• Divergent boundaries involve plates moving towards each other

Discuss the role of subduction zones in the formation of volcanic arcs.

• Volcanic arcs are formed by tectonic plate collisions, not subduction zones

• Subduction zones have no impact on the formation of volcanic arcs

• Subduction zones play a crucial role in the formation of volcanic arcs by creating the conditions for magma generation and subsequent volcanic activity.

• Magma generation and volcanic activity are not related to subduction zones

Explain the concept of seafloor spreading and its connection to plate tectonics.

• Seafloor spreading is a result of volcanic activity on land

• Seafloor spreading is the process of new oceanic crust being formed at mid-ocean ridges and then moving away from the ridge, which is connected to the movement of the Earth's tectonic plates.

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

• Seafloor spreading is unrelated to the movement of tectonic plates

What evidence supports the theory of continental drift?

• Fit of the continents like a jigsaw puzzle, matching geological formations, and distribution of fossils and ancient climates.

• Alignment of the stars

• Color of the ocean water

• Number of earthquakes