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.
1 At for-profit preschools, nurseries and childcare centers, before and after school care can cost $150-$600 or more a month ($1,500-$6,000 a school year), depending on location, activities provided, staff-student ratio and hours of operation. For example, Sunshine Kids Club Camp in Sykesville, MD costs $190 monthly for before care only, $231 for after care only and $360 for both; transportation is provided by local school buses, which pick up and drop off students in front of the club.