Question 19 of 20 5 0 Points A important part of weather science is \"hot air rises\". This is an example of A. conduction B. convection C. radiation es Previous Save F5 FO F F4 F3 F1 F2 Esc Solution \'Hot air rises\' is an example of Convection . It takes place due to bulk motion of molecules within a fluid. Gases and liquid can both be considered fluids. Convection occurs naturally on earth as fluid motion takes places due to differences in density occuring because of change in the temperature gradient. A rise in temperature reduces the density of a fluid and causes it to float over the regions of high density and creates a gap. This gap is filled with surrounding cooler air which rises up again due to heat. This sets up convection current and forms the basis for weather patterns, sea breezes etc Radiation is heat transfer by electromagnetic waves at the speed of light. A hot object radiates heat in the form of waves and it does not require any material medium for propogation. Example for radiation is the Sun\'s energy reaching earth through space which basically is Space (vacuum) having no medium while earth\'s atmosphere consists of air (a composition of gases). .

1. Question 19 of 20 5 0 Points A important part of weather science is "hot air rises". This is an
example of A. conduction B. convection C. radiation es Previous Save F5 FO F F4 F3 F1 F2 Esc
Solution
'Hot air rises' is an example of Convection . It takes place due to bulk motion of molecules
within a fluid. Gases and liquid can both be considered fluids.
Convection occurs naturally on earth as fluid motion takes places due to differences in density
occuring because of change in the temperature gradient. A rise in temperature reduces the
density of a fluid and causes it to float over the regions of high density and creates a gap. This
gap is filled with surrounding cooler air which rises up again due to heat. This sets up convection
current and forms the basis for weather patterns, sea breezes etc
Radiation is heat transfer by electromagnetic waves at the speed of light. A hot object radiates
heat in the form of waves and it does not require any material medium for propogation. Example
for radiation is the Sun's energy reaching earth through space which basically is Space (vacuum)
having no medium while earth's atmosphere consists of air (a composition of gases).