Answer:
Seafloor spreading results from intense activity in the upper mantle which cracks the crust and pushes it away.
Explanation:
Seafloor spreading is a process that was first noticed by Alfred Wegener and was used by him in his theory of plate tectonics. There are three types of plate boundaries; convergent boundary, transform boundary, and divergent boundary. The last one is the one where seafloor spreading occurs.
The convection currents in the mantle are the process that breaks up the crust and move the tectonic plates, and when there is higher activity than usual at some place it results in break up the crust of an already existing tectonic plate. Basically, magma rises at a higher rate and pushes through the crust, in this case, the oceanic crust, and it manages to gradually break through it and come out on the seafloor. By doing so, the magma and the pressure from below are pushing the two now divided parts of the plate. As the space between the two different parts becomes larger and large the density of the crust becomes smaller and smaller so more and more magma rises through. The magma quickly solidifies on the ocean floor and piles up, thus creating an underwater mountain range known as a mid-ocean ridge.
Answer:
Negative feedback
Explanation:
I just weighed out the positives and negatives in my head and there were more negatives
<span>Their rapid rotation flings the mass near the equator outward.</span>
The correct answer is Lake Baikal
Answer:
The two rock can be confused with each other as both appear rough to touch and both are found in shades of black & brown and dark themes, also shades of grey sometimes prevail.
They differ in the mode of formation as Quartzite is Metamorphic Rock while Basalt is the Igneous rock formed from the Volcanoes
Explanation:
The two rock can be confused with each other as both appear rough to touch and both are found in shades of black & brown and dark themes, also shades of grey sometimes prevail. They do have similarities in the hardness on some scale as Quartzite is hard while basalt is intermediate in hardness.
Major difference between them are:
They differ in the mode of formation as Quartzite is Metamorphic Rock while Basalt is the Igneous rock formed from the Volcanoes. Quartzite have medium grain size and foliated, granular structure while Basalt is fine grained and glassy in texture.
