Question

According to the whole-mantle model of mantle convection,
A. small amounts of material from the mantle move upward to the surface.

B. slabs of cold oceanic crust move down and into the lower mantle.

C. large chunks of continental crust are pulled down into the lower mantle.

D. material from the core-mantle boundary rises into the mantle to form mantle plumes.

Answer 1

A. small amounts of material from the mantle move upward to the surface.

Answer 2

that was incorrect

Answer 3

yeah...i thought so too...let me think...

Answer 4

is D

Answer 5

i think
B. slabs of cold oceanic crust move down and into the lower mantle
because Mantle convection is the slow creeping motion of Earth's rocky mantle caused by convection currents carrying heat from the interior of the Earth to the surface.
The Earth's surface lithosphere, which rides atop the asthenosphere (the two components of the upper mantle, is divided into a number of plates that are continuously being created and consumed at their opposite plate boundaries.
Accretion occurs as mantle is added to the growing edges of a plate, usually associated with seafloor spreading. This hot added material cools down by conduction and convection of heat.

Answer 6

B is incorrect

Answer 7

so whats the answer

Answer 8

A