Question

Which of the following is the correct definition of convection?
A. the transfer of heat by currents

B. the transmission of heat across empty space

C. the electromagnetic radiation from the surface of an object which is due to the object's temperature

D. the transmission of heat across matter

Answer 1

https://www.google.com/#hl=en&output=search&sclient=psy-ab&q=convection&oq=convection&gs_l=hp.3..0l4.3578.5937.0.6375.10.7.0.3.3.0.547.2718.2-3j1j1j2.7.0.les%3B..0.0...1c.1.5.psy-ab.2TFUZ1gyfak&pbx=1&bav=on.2,or.r_qf.&bvm=bv.43287494,d.dmQ&fp=d4a388dd59cfe2ee&biw=1271&bih=707

Answer 2

A?

Answer 3

That's what I would choose.

Answer 4

Thank you! :-)

Answer 5

Answer should be A. Since the thermal convection of heat transfer occurs generally due to flow of fluids or gases one place to another.