Type:

Other

Description:

This is a classroom activity to explain liquid crystal sensors for middle school students. A list of activity materials and .pdf handouts are included. Objectives: -Understand how liquid crystals (LCs) relate to other phases of matter (liquid, solid, gas) -Observe that liquid crystals reflect many different colors (wavelengths) of light -Learn that thermally sensitive LCs twist and turn (change pitch & orientation) at different temperatures, which changes the particular color of light that they reflect -Learn that just like some LCs can measure temperature, others can 'sense' particular chemicals and biological agents -Explore how LC sensors can be used to detect changes that cannot be seen with the naked eye -Brainstorm particular applications of LC sensors.

Subjects:

  • Science > Engineering
  • Science > Technology
  • Education > General

Education Levels:

  • Grade 1
  • Grade 2
  • Grade 3
  • Grade 4
  • Grade 5
  • Grade 6
  • Grade 7
  • Grade 8
  • Grade 9
  • Grade 10
  • Grade 11
  • Grade 12

Keywords:

oai:nsdl.org:2200/20120826204718888T,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-021,Education,NSDL,Early Elementary,High School,Engineering,Elementary School,Science -- Instructional issues,Science -- Engineering,Technology,Vocational/Professional Development Education,Science -- Technology

Language:

English

Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution Non-Commercial Share Alike

Collections:

None
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Non-profit Tax ID # 203478467