Which of the following for an object should be known to calculate its density? (5 points) A. the heat present in it
B. The amount of matter in it
C. The force of gravity acting on it
D. The space between the object and another object

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods