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 The cost of daycare can vary greatly from state to state and city to city. 2  Generally speaking, the busier the area, the more expensive the daycare rates will be. 3  According to babycenter, day care costs can average anywhere between $250 and $1200 per month. 4  The average national monthly cost of child care is $611. According to babycenter, day care costs can average anywhere between $250 and $1200 per month. 2  The average national monthly cost of child care is $611. 3  Larger chains such as Kindercare may cost more than a local daycare center.