Chan Hee is inflating a basketball using an air pump. He notices that the pump gets warm as he uses it. What is a good hypothesis that could lead to new experimentation? If there is no air in a basketball, then it is hard to play the game A basketball that is inflated bounces better than one that is not inflated If air in a pump is squeezed more then the air gets hotter because energy is added to it. Basketball is more fun...play than baseball because you have to move a lot more

## Step 1<br />The problem presents a scenario where Chan Hee is inflating a basketball using an air pump, and he observes that the pump gets warm. The question asks for a hypothesis that could lead to new experimentation.<br /><br />## Step 2<br />A hypothesis is a proposed explanation for a phenomenon that can be tested. In this case, the phenomenon is the pump getting warm.<br /><br />## Step 3<br />The hypothesis that best fits this scenario is "If air in a pump is squeezed more then the air gets hotter because energy is added to it." This hypothesis is based on the principle of energy conservation, which states that energy cannot be created or destroyed, only transferred or transformed.<br /><br />## Step 4<br />In this case, the energy is being transferred to the air in the pump as it is being compressed. This energy transfer is causing the air to heat up, which is why the pump is getting warm.<br /><br />## Step 5<br />This hypothesis can be tested by conducting an experiment where the amount of air being compressed in the pump is varied, and the temperature of the pump is measured. This would allow for the testing of the hypothesis and the determination of whether it is a valid explanation for the observed phenomenon.