Question

Among the following, which is the best example of heat transfer by conduction?

• A. Heat energy transferred from the surface soil to the rocks below.
• B. Heat energy transferred from the Sun to the Earth.
• C. Heat energy transferred from the top to bottom of a lake.
• D. Heat energy transferred from the Earth's surface to the upper atmosphere.

Answer 1

The correct option is A Heat energy transferred from the surface soil to the rocks below.

Conduction can be defined as the transfer of heat from one object to another where the objects are in contact and are at different temperatures. The heat is transferred from soil of the surface to the rocks below through conduction.
Heat energy is tranferred from Sun to Earth through radiation.
The transfer of heat from top to bottom of lake and from Earth's surface to the upper atmosphere are examples of convection.