Boiling water in a pan is a good example of convection a. the warm water rises and the cooler water sinks. b. the water is touching the bottom of the pan, but not the heat source. c. boiling water can cook hard boiled eggs. d. boiling water is an example of radiation and not convection.

Boiling water in a pan is a good example of convection because the warm water rises and the cooler water sinks.

Answer : Option A

Explanation:

The process in which a liquid is heated to transfer thermal energy to the liquid in the form of heat is called as convection. For example, when water is boiled in a vessel at a certain temperature which is a good example of convection, the warm water rises and the cold water sinks because liquid above a hot surface expands and then the liquid rises.

d eras and periods

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force