Which situation is an example of transferring heat by means of convection?
a) the sun warming the earth
b) the weather patterns outside
c) you toasty-warm in some footy pajamas
d) you accidentally grabbing the hot pan from the oven

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

Which of the following best describes the shape of earth's orbit? a.ellipticalb.circularc.spirald.figure eight