Light at a distance: Investigating Intensity using cellphone's light sensor

"Light at a Distance" Lab Worksheet!

Have you ever wondered why headlights seem faint in the distance but become intensely bright as cars get closer? It's all about light and distance! This engaging lab worksheet explores this fascinating phenomenon.

Objective:

Explore how light intensity changes with distance from a light source and uncover the mathematical relationship between the two.

In this activity, you'll:

• Set up a simple experiment with a light source and measure its intensity at different distances.
• Use the mobile application "Fizziq" to record and analyze your data.
• Utilize modern technology by measuring light intensity with a light sensor in a cellphone.
• Create a graph of intensity versus distance using the data collected.
• Compare your graph with one showing intensity versus the reciprocal of the distance squared.
• Investigate the value and meaning of the slope.
• Solve a crossword puzzle related to light and distance!

Plus, a pre-assessment questions and a sample worksheet/cross word answer key are included.

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