Which statement best describes the age of the seafloor?
select one:
a. it is constant throughout the world.
b. it is younger near the center and older near the continents.
c. it is older near the center and younger near the continents.
d. the seafloor is the newest landform on earth.
the pangaea theory supports the theory of plate tectonics because
select one:
a. it is based on the idea that there were several land masses when earth was first created
b. it is based on the idea that all the present continents were one supercontinent
c. it does not require scientists to support the notion that earth’s plates can move
d. one day, earth will have one large land mass again
what is a subduction zone?
select one:
a. a place where one plate is pushed down under another, such that it melts into the mantle
b. a place where two plates collide and mountains form
c. a place where hot material from the core rises through the mantle
d. a place where the seafloor is spreading