What form of energy transforms to what other form when you turn on a steam iron?

This is one type of line graph in which the independent variable is time plotted on the x axis and the dependent variable, also numerical, is plotted on the y axis.

What explosion in the upper solar atmosphere releases about as much energy as millions of 100-megaton hydrogen bombs exploding simultaneously?

According to the second law of thermodynamics, what is true of entropy in all natural systems? a.it will always decrease. b.it will always increase. c.it will always remain the same. d.it is impossible to measure. e.it will always equal zero.