Science
Strand IV
Use Scientific Knowledge from the Physical Sciences in Real-World Contexts

 

Science/Strand IV
Content Standard 4
All students will describe sounds and sound waves; explain shadows, color, and other light phenomena; measure and describe vibrations and waves; and explain how waves and vibrations transfer energy. (Waves and Vibrations)

 

Science/Strand IV/Content Standard 4
High School

 

Science/Strand IV/Content Standard 4/High School
Benchmark 4
Describe different types of waves and their technological applications.

Benchmark Clarification

There are many different types of waves. Mechanical waves (sound, ultrasound, water waves, shock waves) require a medium in order to travel.

Electromagnetic waves (radio waves, microwaves, radiant heat, infrared radiation, visible light, ultraviolet radiation, and x-rays) do not require a medium in order to travel.

Students will:

  • Describe mechanical waves
  • Describe electromagnetic waves
  • Recognize that the amount of energy transferred determines the use of a wave
  • Identify examples and applications of mechanical and electromagnetic waves (See Real-World Context)

Key Concept / Real World Context / Instructional Example / Assessment Example / Resources

 

Science/Strand IV/Content Standard 4/High School/Benchmark 4
Key Concept
Types of waves:

  • mechanical:
  • sound
  • ultrasound
  • water wave
  • shock wave

electromagnetic:

  • radio waves
  • microwaves
  • radiant heat
  • infrared radiation
  • visible light
  • ultraviolet radiation
  • x-rays

See Properties of waves (SCI.IV.4.HS.3).

See Energy transformations (SCI.IV.2.MS.4).

 

Science/Strand IV/Content Standard 4/High School/Benchmark 4
Real World Context
Examples of mechanical waves:

  • sound
  • ultrasound
  • ocean waves
  • wave tanks
  • earthquakes
  • seismic waves

Examples of electromagnetic waves:

  • light
  • radio and television signals
  • heat lamps
  • microwaves
  • transmitters
  • radar
  • ultraviolet radiation in sunlight
  • x-ray machines
  • CAT scans
  • gamma rays from radioactive decay

 

Science/Strand IV/Content Standard 4/High School/Benchmark 4
Instructional Example

Benchmark Question: How do we describe and measure vibrations and waves?

Focus Question: What are some technological applications of electromagnetic waves?

After a teacher-led class discussion of the electromagnetic spectrum of waves, small groups of students will conduct research using various media (internet, periodicals, etc.) to create a report about the applications of the following electromagnetic waves: radio waves, microwaves, radiant heat, infrared, visible light, ultraviolet light, radiation, and x-rays. In this report, students will describe the historical development of the technology. The class will discuss the students’ findings.

Constructing: (SCI.I.1.HS.4), (SCI.I.1.HS.5).

Reflecting: (SCI.II.1HS.3), (SCI.II.1.HS.4), (SCI.II.1.HS.7).

 

Science/Strand IV/Content Standard 4/High School/Benchmark 4
Assessment Example

Each student will write an essay that explains the technological uses of each of the following electromagnetic waves: radio waves, microwaves, radiant heat, infrared radiation, visible light, ultraviolet, radiation, x-rays.

(Give students rubric before activity.)

Scoring Rubric

Criteria

Apprentice

Basic

Meets

Exceeds

Completeness of explanation

Explains one to three uses of electromagnetic waves.

Explains three to four uses of electromagnetic waves.

Explains five to six uses of electromagnetic waves.

Explains seven to eight uses of electromagnetic waves.

 

Science/Strand IV/Content Standard 4/High School/Benchmark 4
Resources

Webliography.
http://mtn.merit.edu/mcf/SCI.IV.4.HS.4.html

Making waves.
http://www.smgaels.org/physics/home.htm

Teacher's Guide.
http://imagers.gsfc.nasa.gov/teachersite/index.html