As seen in a US weather map, the H (or High) and L (or Low) symbols indicate regions where surface air pressures are high or low
, respectively, compared to surrounding areas. An H is plotted where the air pressure is highest and an L is plotted where the air pressure is lowest. Proceeding outward and away from the center of a high pressure system, the air pressure _______. A. falls.
B. rises.
C. does not change.
Explanation: When moving away from the points marked as H (High) i.e area where the air pressure is high, the surface air pressure falls. This is because you as you moving away from H point and in the processing, you are also moving towards the point marked as L (Low) low air pressure point area so the pressure falls.
Insolation is the solar radiation that reaches the earth's surface. It is measured by the amount of solar energy received per square centimetre per minute. Similarly, solar energy received by the earth is called insolation.