Question

what are the strengths and weaknesses of this model as a model for demonstrating seafloor spreadeing

Answer 1

Answer:

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Explanation:

Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor.

Answer 2

The strengths and weaknesses of this model as a model for demonstrating seafloor spreadeing.

• In the theory of plate tectonics, seafloor spreading aids in the explanation of continental drift. Tensional stress generates fractures in the lithosphere as oceanic plates diverge.
• The seabed is spreading at a rate of about 140 millimetres per year, down from in some places 200 millimetres per year just 15 million years ago, according to their analysis of the magnetic recordings that have been preserved. However, not all ridges moved in the same way. Some accelerated while others nearly slowed down.
• Sea level changes may also be influenced by seafloor spreading and mid-ocean ridges. Oceanic crust cools and sinks as it becomes more solid as it goes away from the shallow mid-ocean ridges. As a result, the ocean basin's volume grows and the sea level falls.
• By spreading along oceanic ridges due to volcanic activity, the seabed creates new crustal and mantle regions. This newly formed oceanic lithosphere cools down after being created and can shrink by up to 3% of its original size. It has the potential to cause earthquakes in the ocean.
• At divergent plate borders, seafloor spreading takes place. The mantle's convection currents generate heat that makes the crust more flexible and less thick when tectonic plates slowly drift apart from one another. Less dense material rises, frequently creating mountains or raised seabed regions. The crust eventually fractures.

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