Questions

1. Where should this investigation be done?

2. You decide to graph the light intensity produced by the different incandescent bulbs. 

   1. • What is the independent variable for this graph?

      • What is the dependent variable for this graph?

      • What variables will you need to keep the same?

3. Write detailed instructions explaining how to collect the data for this graph. 

4. Once the data has been collected, it needs to be plotted. 

   1. • What kind of graph should be used?

      • What would the axes labels be? (The unit of light intensity is the lux).

5. To complete the investigation you will need to measure the light intensity produced by the 'energy saver' bulbs. Explain how this should be done, and how to use the graph to compare the different types of bulbs.