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.
Daycare costs vary greatly by state. Last year, the average annual cost for a 4-year-old was $4,312 in Mississippi and $12,355 in New York, according to the Child Care Aware report.hild-care costs can exceed rent payments for the average American family, according to a new study by Child Care Aware of America, an advocacy group working to increase affordable child care in the U.S.