10. Heat is the transfer of thermal energy from one object to another because of a difference in

Temperature

Explanation:

Heat only flows from one point to the other due to the difference in temperature.

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.