INDIAN GEOGRAPHY

Detailed explanation-1: -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. Eventually, the crust cracks.

Detailed explanation-2: -This gap results in seafloor spreading and the formation of new crust as molten material from the Earth’s mantle rises up to fill the gap. Convergent Plate Boundary: A convergent plate boundary is when two tectonic plates push together, causing the crust to be destroyed or pushed down into the Earth’s mantle.

Detailed explanation-3: -The Atlantic Ocean grows 1.5 inches wider every year. That’s because the tectonic plates undergirding the Americas are separating from those beneath Europe and Africa.

Detailed explanation-4: -It is possible to calculate the spreading rate of one side of a mid-ocean ridge by dividing distance by time (Distance/Time = Rate). This is called a half-spreading rate. Multiply it by 2 to get the full spreading rate for both sides of the ridge.