Heat travels from the sun to Earth by (a)  

Energy transfer by conduction in metals occurs when (a)   .

Firewalkers who walk bare foot on red-hot wooden coals depend on (a)  

A pot of boiling water cools at a faster rate if left (a)   .

Planet Earth loses heat primarily by (a)   .

Global warming by the greenhouse effect mostly results from the fact that an atmosphere with excess carbon dioxide will trap (a)  

Temperature is related mostly to the (a)   .

(a)   has the higher specific heat capacity.

You want to change the temperature of 50 grams of water by 30 degrees C. (The specific heat capacity of water is 1.0 cal/g0C). The number of calories (Q) needed is (a)   .