A beaker contains a mixture of ice and pure liquid water at 0C. What happens to the temperature of the liquid water as heat is added?
A) It immediately begins to rise slowly.
B) It remains constant until the ice melts, and then it begins to rise.
C) It rises rapidly as the ice melts.
D) It rises slowly until it reaches 32C, and then it remains constant as the ice melts.
E) The temperature pattern cannot be predicted.
Question 2
The barycenter follows ________.
A) a path that is perpendicular to the Earth's ecliptic
B) a pattern that parallels the Moon's orbit
C) a smooth orbit around the Sun
D) a wavy path around the Sun
E) the Earth's declination