You could say the relative location of washington d. c. is: a. northwestern united states next to oregon b. southwestern united states next to arizona c. northwestern united states next to virginia d. southwestern united states next to georgia

Your answer is C Northwestern United States next to Virginia. That's because when you go Northwestern opposite of Southwestern so that's your answer.

So your answer is C.

C dc is in Virginia on the coast, however not part of Virginia 

Swaves do not travel through water and stuff like that p waves do

Mantle convection is the process that drives plate tectonics. the theory of plate tectonics states that the crust is divided into plates that float on the semi molten mantle below. the circular motion of the magma as it slowly rises and falls or move though convection cells drags the plates along causing them to move. the heat source in the lamp would represent the earth's core. the core is the source of energy that drives convection in the mantle. the lava represents molten magma under the earth's surface. if the lava lamp had floating pieces they would move as the circular motion of the lava in the lamp as it rises and falls would move them along the surface. these floating pieces would represent pieces of the earth's crust.