Suzanne bikes 3 km to school every day. it takes her 20 minutes because she always has to stop at a traffic light. what is her average speed?
a. 0.15 km/s
b. 3 m/s
c. 6.7 km/minute
d. 9 km/h

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