2007-11-11 08:06:16 · 6 answers · asked by melissadavis_18 2 in Science & Mathematics ➔ Weather
A physical greenhouse gets warm because the panes of glass or plexiglass or plastic sheeting suppress convection. Radiative transfer has little to do with warming of a physical greenhouse. You can demonstrate this by opening the doors and windows on a greenhouse. It cools down rapidly. If it were radiative in that the roof of the greenhouse were reflecting heat back downwards, the greenhouse would stay warm.
2007-11-11 09:21:22 · answer #1 · answered by gcnp58 7 · 0⤊ 0⤋
The roofing (glass) of the greenhouse prevents the convection and therby prevents the mixing with the free atmosphere.But the actual greenhouse effect is achieved by trapping the heat near the surface with the help of gases and preventing it from escaing to space by radiation.
2007-11-12 06:57:06 · answer #2 · answered by Arasan 7 · 0⤊ 0⤋
it gets warm because of the materials they use for the greenhouse..the main reason is the reflection from the sun into the greenhouse and theres nowhere for it to escape..
its practically magnifying the heat..
some people add certain resistances to the glass and materials used for the green house so they absorb more heat..
2007-11-11 16:35:44 · answer #3 · answered by Justin B 2 · 0⤊ 0⤋
The invisible light spectum from the sun becomes trapped inside the glass of a greenhouse and it creates warmth.
2007-11-11 16:09:39 · answer #4 · answered by dragonbot 2 · 0⤊ 0⤋
THE HEAT FROM THE SUNS RAYS ENTERS THE GREENHOUSE AS SHORT WAVES AND AS IT HEATS THE CONTENTS IT IS CONVERTED TO LONG WAVES WHICH LOSE HEAT SLOWER THAN THE SHORT WAVES, THUS THERE IS A HEAT BUILD-UP.
2007-11-11 18:14:12 · answer #5 · answered by Loren S 7 · 0⤊ 0⤋
Heat has very little chance of escaping.
2007-11-11 16:09:34 · answer #6 · answered by Rev TL 3 · 0⤊ 1⤋