Jennifer checked the pressure in her bike tires before school and they had a pressure of 0.890 atm. She checked the tire pressure again after school and they had a pressure of 1.01 atm. Why was there an increase in pressure? Check all that apply.

The tire’s pressure rose from 0.890 atm to 1.01 atm. If the air in the tire warmed as the day went on, its molecules moved faster and collided with the tire walls more forcefully, increasing the pressure. Thus, the outside temperature increased and the molecules moved around more rapidly. A decrease in temperature or a hole would not explain the pressure increase.

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