Question

The change in an object's volume that occurs when heat is added is called
______.
(1 point)
A. thermal expansion
B. thermal contraction
C. boiling
D. evaporation

Answer 1

Thermal expansion because heating something causes the object to expand.  

Answer 2

A -thermal expansion for example if your straitening your hair it gets bigger and seems longer rather then having it regular you can see the difference because of heat transfer in the hair so it is thermal expansion.