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C. This is how I will make sure I have developed a fair test: 1. I will repeat my measurements 3 times for each light bulb. 2. I will carry out all the testing in the same environment (background light and temperature). 3. The distance I measure from the light bulb will be consistent. 4. Get more than 1 light bulb of each type.
D. I will get my information for my research from: the internet; text books and experts.
A. My investigative question: How does light change according to the distance from its source?
B. This is how I will test my question: 1. I will get 4 different wattages of light bulbs. 2. I will measure the light intensity at different distances for each light bulb. 3. My measuring instuments will be: a lightmeter and a ruler.
Planning (Part 1)
