Substances on Earth’s surface absorb light energy from the sun. This energy causes particles to move, which leads to increases in their thermal energy, then increases in their temperature. Warmed substances on Earth’s surface transfer thermal energy to air molecules that collide with the surface by conduction. These rising warm air molecules then create a convection current in the air. This explains...
a. how conduction leads to convections at the earth's surface.
b. How convection leads to conduction at the earth's surface.
a. how conduction leads to convections at the earth's surface.
The passage states that warmed substances on Earth's surface transfer thermal energy to air molecules by conduction. As the air molecules gain this thermal energy, they become warmer and rise, creating a convection current. This means that conduction— the direct transfer of heat through physical contact— leads to the convection process, where warm air rises and cooler air replaces it.
b. How convection leads to conduction at the earth's surface.
The passage does not mention how convection leads to conduction at the Earth's surface. It focuses on how conduction leads to convection.