The water then exists in the solid phase as ice. In spring, when the temperature rises, the ice melts and changes from the solid to the liquid phase. The phase transition occurs as a result of energy exchange with the environment. The melting of ice to water can be easily measured by differential scanning calorimetry.
The price of care for a 4-year-old is less than for an infant, and the cost of care for a school-age child is even less than that. But even home daycare for a school-aged child â the cheapest form of care â costs $9,159 per year in D.C., $5,366 per year in Maryland, and $4,938 per year in Virginia.
Four years of day care in Pennsylvania costs an average of $39,558. The annual cost of day care for an infant exceeds the average cost of in-state tuition and fees at public colleges in 31 states, including Pennsylvania, a 2013 report by national resource and referral group Child Care Aware America found.n 31 states and the District of Columbia, the average annual cost for infant day care was higher than a year's tuition and fees at a four-year public college in 2012.