Which statement describes an aspect of tectonic plate motion directly caused by density
differences among tectonic plates?
A. Oceanic plates move outward from the mid-ocean ridge.
B. When oceanic and continental plates collide, the oceanic plate is
subducted.
C. Continental plates are thicker and contain older material than oceanic
plates.
D. The orientation of magnetic particles in oceanic plates changes at regular
intervals.

How do temperature and salinity affect deepwater currents? question 15 options: as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.