Mantle material rises in convection currents because heated materials become more dense. When you touch a hot plate, the transfer of heat from the plate to your hand is called .

Please select the best answer from the choices provided

T

F

i think its both a and b

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers