Author Question: Blow on your hand with your mouth open. Then do the same with your lips puckered and you'll find ... (Read 18 times)

newyorker26 · **on:** Jul 29, 2018

Blow on your hand with your mouth open. Then do the same with your lips puckered and you'll find

A) a difference in temperatures.
B) the breath from puckered lips is cooler.
C) both of these
D) neither of these

Question 2

If a volume of air is warmed, it expands and tends to

A) warm.
B) cool.
C) neither of these