How Can a Light Bulb Be Hotter than Other Light Bulbs?

ALEJANDRO SARMIENTO CEPEDA DAVID LOZANO TORRES

VALENTINA RAMIREZ RAMIREZ

Pictures

Question

Chart and

tables

Hypothesis

Results and

Conclusion

Procedure

Materials

QUESTION

MENU

Which light bulb produces the most heat?

HYPOTHESIS

MENU

We think that the 5W will be the hottest light bulb. We think that the 50w will be the coolest.

MATERIALS

MENU

4 Different light bulbsA lamp2 thermometersStopwatch Camera to take picturesShoebox for group demonstration

PROCEDURE

MENU

1. Put a light bulb #1 into the lamp and turn the lamp on.

2. Hold the thermometer on the light bulb for 2 minutes and write down the temperature.

3. Turn off the lamp. Let the light bulb cool down before you remove the bulb. Let the thermometer return back to room temperature.

4. Repeat steps 1-3 with light bulb #2,#3, and #4.

5. Measure the temperature of each light bulb 2 times.

PICTURES

MENU

CHART AND TABLES

MENU

Temperature 1 Temperature 2

Light bulb #15W 30°C 31°C

Light bulb #250W 46°C 48°C

Light bulb #343W 41°C 44°C

Light bulb #470W 47°C 55°C

RESULTS AND CONCLUSION

MENU

The 70W light bulb produced the most heat.

This light bulb has most watts. And it was the brightest because the shape is all connected. The only one that was not energy efficient.

We would buy the 50W light bulb because it is in the middle of heat and brightness and it is energy efficient.

The brightest bulb is the one with the highest temperature.