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.
Child care costs depend on a number of different factors, but the most important one to consider is the specific type of care you have. To illustrate this point, let's look at the cost of two of the most popular child care options in the United States: day cares (also referred as child care centers) and nannies. According to 2016 Care.com member data, the average cost of center-based day care for infants is about $10,468 per year, but prices can range from $6,605 to $20,209 a year. Similarly, the average cost of center-based day care for toddlers is about $9,733, but prices can range from $8,043 to $18,815 a year. On the other hand, the average cost of a nanny who cares for one child is about $28,905, but prices can range from $27,019 to $32,677.