A young child opens the refrigerator door and stands there for several minutes, looking for something to eat. The child’s parent tells the child to shut the refrigerator door because the child is letting the cold air out. What is a more exact explanation of what is occurring with the air when the refrigerator door is open?

Isobars are lines of constant or equal pressure on a weather map. they can be used to find areas of low or high pressure over a broad area, and they can tell us how intense the system may be. on weather maps, you may have noticed areas that have a large l or h over a region with lines circling around them. the l stands for low pressure and h stands for high pressure. the lines circling them are isobars. check out the pressure system and isobars over georgia and florida. what is the present weather in this area ? a) clear and sunny b) cold and cloudy c) changing weather d) lots of precipitation