Your friend want to decrease the cooking time of spaghetti noodles by turning up the heat on the stove will this work and why?

No because In a pot on a fire, the surface of the water will be as low as maybe 80 or 90 degrees, when bubbles raise at the bottom, but do not reach the surface yet. (Again here: heat transfer by bubble evaporation is extremely fast, same reasons as for condensation) 10 or 20 °C less are a lot when cooking noodles (wheat starch) this may lower the reaction rate to half the value at 100°C, or even lower (rule of thumb for such reaction

That result from subduction of oceanic plates beneath lighter continental plates. most of the earth's volcanoes are located around the pacific ring of fire because that the location of most of the earth's subduction zones.