What term describes molecules that are intermediate between inorganic compounds and living ...

Answer to #1

A

Answer to #2

FALSE

Answer to #3

Some minerals occur together in igneous rocks but others do not. Bowen's observations and laboratory experiments demonstrated that as molten material cools, there is a predictable sequence in which specific minerals crystallize, rather than all crystallizing simultaneously. Therefore, minerals having similar melting points will tend to crystallize together and minerals with very different melting points will not.

Answer to #4

D

Answer to #5

FALSE

Answer to #6

Spreading ridges: Beneath spreading ridges, the temperature locally exceeds the melting temperature, at least in part because pressure decreases. That is, plate separation at ridges probably causes a decrease in pressure on the already hot rocks at depth, thus initiating melting.

Subduction zones: When an oceanic plate is subducted beneath either a continental plate or another oceanic plate, a belt of volcanoes and plutons is found near the leading edge of the overriding plate. As a subducted plate descends toward the asthenosphere, it eventually reaches a depth at which the temperature is high enough to initiate partial melting.

Hot Spots: A hot spot is an area over which a plate moves, thereby yielding a succession of volcanoes. Hot spot volcanism results from a rising mantle plume, a cylindrical plume of hot mantle rock that rises from perhaps near the core mantle boundary. As it rises toward the surface, the pressure decreases on the hot rock and melting begins, thus yielding magma.

Answer to #7

B