Which of the following cases earths plates to move continuously.
a. glacial deposits
b. earths magnetic field
c. convection in the earths mantle
d. radiation in the earths core

The correct answer to this item is letter

C. convection in earth's mantle

Convection currents move tectonic plates when the rising mantle creates heat inside. The radioactive decay of several substances is responsible for the creation of the convection currents.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.