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Name:____________________________________________________ Candle Spectra Lab Objective: Students will be able to observe colored birthday candles and identify the chemical composition of each flame based on its specta. Pre-lab Questions: 1. What is spectra and why is it important? 2. What are THREE things we can learn from a star’s spectra? 3. What is the difference between redshift and blueshift? 4. How can you tell if a star is redshifting? 5. Using the power point, complete the data table below on Type of Stars: Type of Star: Neutron Star Younger Neutron Star White Dwarf Medium Older Medium Star Giant Star Super Giant Star Star Color: Star Temperature: Elements Burned: Examples: Materials: 6 GEM FLAMES birthday candles matches/lighter clay aluminum pan spectroscope colored pencils Hypothesis: Predict the color that will be emitted for each color candle below. Green:____________________________ Purple:___________________________________ Blue:_____________________________ White:____________________________________ Yellow:_____________________________ Red:___________________________________ Procedure: 1. Carefully place one of each of the candles in a small piece of clay in the aluminum pan. 2. After darkening the room, light one candle at a time and observe the candle with the spectroscope. COLOR the spectra lines for each candle below: 3. Spectra Boxes: Color in the spectral lines in the space below for each color candle. Then PREDICT the element in the candle! a. Light Element Prediction: Green: b. Purple: Element Prediction: c. Blue: Element Prediction: d. Dark Green: Element Prediction: e. Orange: f. Element Prediction: Red: Element Prediction: Analysis and conclusion Questions: 1. Explain how this lab relates to the following: a. Aurora Bourelis: b. Fireworks: c. Neon Lights: 2. Below is a diagram of the spectras for common elements. Based on these spectral lines, list the CORRECT element for the candle color. Light Green:_______________________ Purple:___________________________________ Blue:_____________________________ Dark Green:______________________________ Orange:_____________________________ Red:___________________________________ Provide the name for the element symbol Application: Based on your knowledge of the Nebular Theory, which states that our small Sun and its surrounding planets were created by the supernova of a massive star, develop a SPECTRA (with the hypothesized elemental lines) as well as the type, color and temperature of the star that erupted 4.6 billion years ago. Then, lastly, based on the color and knowledge of our own Sun, create a SPECTRA with the correct elements for our Sun. Include again, the type, color and temperature of our Sun.