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Rur*Date

ACTUE PHYSICSCommunications Chapter I

Claim-Evklence-Reasoning (CER) Writing Assignment - Final Draft"Quiz" - Due Mondav, 11/18/13

Directions: Read the following Prompt. Then construct a scientific argument, using the claim-Evidence.Reasoning (CER)framework, that answers the scientific Question below. Use what you learned in class aboutwaves and vibratins strinqi.particularly in Activities 1 and 2. Use your notebook notes, including,attached sheet, for background on the.relevant physicsconcepts- To help in preparing your response, refer to the'CER Argument Preparation" handoutyou received duringthe lastelass. Use the feedback on your Draft 1 response, and the information in the handou! to help in writing this Final Draft.

Prompt A group ofstudents performed a series ofexperiments to investigate various properties ofa vibrating strin& including:string tension, wave speed, wave amplitude, wave frequenry; and wavelength. They used a special vibrating string machinethat enabled them to make changes in properties, while keeping some properties constant and take accurate measurements.

In experiment 1, the students changed the amplitung wa

de of the vibrating string, while keeping the *@1;pe,ed-enflffeguen-W.The results are shown in the table below.tension constant, and measured

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constant, and measured the resulting wave speed and frequency. The results are shown in the tabte below.

i{16{ €{t sNe e4$e *seScientific Question: How are the proderties of a vibrating strine related to each other?(Remember, "related" means that a change in one propefi results in a change in another property.)

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Claim: Write a statement (based on your evidence ond reasoning) that diredly onswers the scientific question.

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Evidence: Provide specific scientific observations/data that support your claim.

Reasoning: Explain, using relevant science concepts you learned, why your evidence backs up your claim.

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