When the air inside a hot air balloon is heated, it expands and takes up a larger volume. As a result, it floats higher into the sky. What else happens to the air inside the balloon as it is heated?

a Density decreases.
b Density increases.
c Mass decreases.
d Mass increases.

Question

When the air inside a hot air balloon is heated, it expands and takes up a larger volume. As a result, it floats higher into the sky. What else happens to the air inside the balloon as it is heated?
 	
a	Density decreases.
b	Density increases.
c	Mass decreases.
d	Mass increases.

anonymous · Answer

Density decreases as the particles get farther apart

anonymous · Answer

thanks (:

anonymous · Answer

density decreases and mass decreases as they are directly proportional to each other 
density=mass/volume

anonymous · Answer

as a clue u can see in the ques volume expands means denssity decrease as from above formula volume i inveresly proportional to density

anonymous · Answer

no decrease in mass, an increase in volume to get lower density