A quantity of water at 0^\circC is heated to about 30^\circC. At each degree rise in temperature, its density will
A
rise steadily
B
fall steadily
C
fall then rise
D
rise then fall
Verified Correct Answer: D.
Physical Principles & Numerical Solution
Water has a density of about 0.9998 g/cm³ at 0^\circC. As water is heated from 0^\circC to 4^\circC, it actually increases in density until it reaches its maximum density at approximately 4^\circC. Once the temperature exceeds 4^\circC, the density starts to decrease as the water continues to heat up towards 30^\circC.
Therefore, The density will rise and fall.
Source: Myschool Past Questions Archive (Record #702)