Presentation on theme: "Glow Sticks How do they work? What affects how bright they glow?"— Presentation transcript:
1 Glow SticksHow do they work?What affects how bright they glow?
2 Glow Stick Lab Question: Glow sticks are often used on fishing lures. I wonder if the chemicals inside will react & produce light at temperatures typical of water in the Columbia River, where 2-6°C is common.Hypothesis:
3 Procedure - Variables Materials: Steps include Manipulated (changed) Responding (depends on the change)Two Controlled (kept the same)Experimental control (baseline to compare to)Materials:Steps includeDirections for someone else to followmeasurements to be recordedNumber of trials repeated to improve validity
4 Data & its Analysis:draw a table with 2 columns and a key to your brightness symbolsAnalyze how the results relate to the question being addressed
5 Conclusion - Include 3 parts: ANSWER: Restate & answer the question SUPPORTING DATA: Write the numbers or observations that support your answerEXPLANATION: Describe possible reasons for results:causative effects (answer why)sources of error (variables that were not controlled)additional questions that need to be investigated