1.  A gas exerts pressure because its molecules are moving about rapidly and in random directions.

2.  But it was not long before the harsh facts of economic and social life exerted their pressure.

3.  Did Democratic leaders exert pressure on their colleagues to vote for the new law?

4.  Environmental groups are exerting pressure on the government to tighten pollution laws.

5.  Small debts could rapidly mount up and begin to exert intolerable pressure on the relationship between husband and wife.

6.  The air exerts pressure on the airway, holding it open and allowing the sleeper to breathe normally.

7.  The gases inside the capsule will be exerting a pressure due to their random motion.

8.  The technique can continually measure how much pressure is being exerted.