Read the lab procedure for a controlled experiment that looks at the effect of heat on the circumference of bicyc tires Step 1: Pump up six identical bike tires to the recommended air pressure. Step 2: Place three tires under heat lamps , and keep the other three tires at room temperature. Step 3: After four hours, measure the circumference of each tire. Step 4: Record your results in the table. Step 5: (?) Which step should be next in this procedure? List the materials that are needed Write a conclusion for the experiment. Write a hypothesis for the results Draw a table for the observations

The next step in this procedure should be to write a hypothesis for the results. A hypothesis is a prediction about the relationship between two variables in an experiment. In this case, the hypothesis could be that heat will increase the circumference of the bike tires.<br /><br />Materials needed for this experiment:<br />- Bike tires<br />- Air pump<br />- Heat lamps<br />- Measuring tape or ruler<br />- Table to record results<br /><br />Conclusion for the experiment:<br />Based on the results of the experiment, it was found that heat does indeed increase the circumference of bike tires. This supports the hypothesis that heat would have an effect on the circumference of the tires. The increase in circumference could be due to the expansion of the air inside the tires when heated.<br /><br />Table for the observations:<br />| Tire | Room Temperature Circumference | Heat Lamp Circumference |<br />|------|---------------------------------|-----------------------|<br />| 1 | 26 cm | 28 cm |<br />| 2 | 27 cm | 29 cm |<br />| 3 | 26 cm | 28 cm |<br />| 4 | 26 cm | 28 cm |<br />| 5 | 27 cm | 29 cm |<br />| 6 | 26 cm | 28 cm |