Question

how are convection currents formed in magma​

Answer 1

Answer:

when the molten rock(magma) near the core(source of thermal energy) gains thermal energy, the magma in this area becomes less dense as these particles move away further from each other. Due to law of buoyancy this area move up and away from the core and towards the crust, as this area of magma rises, energy dissipates and becomes more dense as the particles in this area gets closer. Due to law of buoyancy this area of magma moves down closer to the core(source of thermal energy) and this repeats forming a convection current.

Explanation:

This is my physics side explanation, but the geography side explanation is much simpler

Answer 2

Answer:

Hey

Explanation:

The convection currents move the magma. As the magma, moves it moves the tectonic plates that float on it. At times, the adjacent tectonic plates collide with each other. This causes an earthquake. Most earthquakes are of less intensity and are not felt. At times, the collision between the tectonic plates makes the plates and everything above the plates move violently. This causes a major earthquake. During an earthquake, the colliding plates could move sifeways or upwards or downwards.

An earthquake originates below the ground in the Earth's crust. The spot from where the earthquake originates is called hypocentre or focus of an earthquake. It is often several kilometres below the Earth's surface.

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