<?xml version="1.0" encoding="UTF-8"?>
<tem xmlns="http://www.teachengineering.org/tem/elements/1.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.teachengineering.org/tem/elements/1.0/ http://www.teachengineering.org/schemas/tem.xsd"><identifier>http://www.teachengineering.org/view_activity.php?url=collection/wpi_/activities/wpi_human_mol_joy/hummol_joy_act.xml</identifier><docType>activity</docType><format>text/xml</format><language/><title>Forces on the Human Molecule</title><creator>K-12 Outreach Office, </creator><keywords><keyword>bending</keyword><keyword>bond</keyword><keyword>compression</keyword><keyword>elastic</keyword><keyword>force</keyword><keyword>inelastic</keyword><keyword>load</keyword><keyword>molecule</keyword><keyword>shear</keyword><keyword>tension</keyword><keyword>torsion</keyword></keywords><vocabulary><word>elastic</word><word>fracture</word><word>inelastic</word></vocabulary><summary>Students conduct several simple lab activities to learn about the five fundamental load types that can act on structures: tension, compression, shear, bending, and torsion. In this activity, students play the role of molecules in a beam subject to various loading schemes.</summary><engrConnection>
		
			
				Engineers must consider many forces when planning and designing materials and structures, including tension, compression, shear, bending and torsion.
			
		
	</engrConnection><learningObjectives><learningObjective>Identify the five fundamental loads: compression, tension, shear, bending, and torsion.</learningObjective><learningObjective>Explain what is meant by something being elastic and non-elastic (inelastic).</learningObjective><learningObjective>Describe characteristics of molecular bonds.  </learningObjective></learningObjectives><cost unit="USDollars">0</cost><timeRequired unit="minutes">100</timeRequired><publisher>TeachEngineering.org</publisher><contributors><contributor>Funded by Pratt &amp; Whitney</contributor></contributors><eduStandards><eduStandard><id>S100DB96</id><locale>Massachusetts</locale><type>Science</type><description>5.3 Explain how the forces of tension, compression, torsion, bending, and shear affect the performance of bridges.</description><lowgrade>6</lowgrade><highgrade>8</highgrade></eduStandard><eduStandard><id>S1009558</id><locale>Massachusetts</locale><type>Science</type><description>2.2 Demonstrate methods of representing solutions to a design problem, e.g., sketches, orthographic projections, multiview drawings.</description><lowgrade>6</lowgrade><highgrade>8</highgrade></eduStandard><eduStandard><id>S1011180</id><locale>Massachusetts</locale><type>Science</type><description>2.3 Describe and explain the purpose of a given prototype.</description><lowgrade>6</lowgrade><highgrade>8</highgrade></eduStandard><eduStandard><id>S1004F28</id><locale>Massachusetts</locale><type>Science</type><description>2.5 Explain how such design features as size, shape, weight, function, and cost limitations would affect the construction of a given prototype.</description><lowgrade>6</lowgrade><highgrade>8</highgrade></eduStandard></eduStandards><geoCoverage>United States</geoCoverage><rights>Copyright 2012 - K-12 Outreach Office, Worcester Polytechnic Institute</rights><rights>http://www.teachengineering.org/policy_ipp.php</rights><isPartOf>http://www.teachengineering.org/</isPartOf><created type="W3CDTF">2011-11-07</created><gradeLevel lowerbound="6" upperbound="8">7</gradeLevel><audience>Teacher</audience></tem>

