What must happen to a sound making object for it to make sound? A: it must be made of metal
B: it must be in a vacuum
C: it must have force applied to it
D: it must be bent

Which of the following is a source of heat for magma formation? magma plumes in the continental crust friction due to divergence friction due to subduction magma plumes in the oceanic crust

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Lightning is an example of what phenomenon? a release of a large amount of energyan absorption of a large amount of energya natural electric circuita natural electric current