Recognize that light waves, sound waves, and other waves move at different speeds in different materials.
Subject Area: Science
Grade: 7
Body of Knowledge: Physical Science
Idea: Level 1: Recall
Big Idea: Forms of Energy -

A. Energy is involved in all physical processes and is a unifying concept in many areas of science.

B. Energy exists in many forms and has the ability to do work or cause a change.

Date Adopted or Revised: 02/08
Content Complexity Rating: Level 1: Recall - More Information
Date of Last Rating: 05/08
Status: State Board Approved
Assessed: Yes


  • Item Type(s): This benchmark may be assessed using: MC item(s)
  • Also Assesses
    Observe and explain that light can be reflected, refracted, and/or absorbed.

  • Clarification :
    Students will describe and/or explain that waves move at different speeds through different materials.

    Students will explain that light waves can be reflected, refracted, and/or absorbed.
  • Content Limits :
    Items may assess the general relative order of wave speed in different phases but will not assess the motion of the particles in the substance.

    Items may assess pitch as related to frequency.

    Items will not assess color as related to wavelength.

    Items will not assess electromagnetic waves traveling in a vacuum.

    Items will not require calculations of wave speed through different materials.

    Items may address water waves but not in the context of water waves at the beach.

    Items will not assess the interaction of multiple waves.
  • Stimulus Attributes :
    None specified
  • Response Attributes :
    None specified
  • Prior Knowledge :
    Items may require the student to apply science knowledge described in the NGSSS from lower grades. This benchmark requires prerequisite knowledge from SC.3.P.10.1, SC.3.P.10.3, SC.3.P.10.4, SC.4.P.10.1, SC.4.P.10.3, and SC.5.P.10.1.


  • Test Item #: Sample Item 1
  • Question: The diagram below demonstrates how a magnifying lens can make a penny appear larger.

    What property of the magnifying lens is most responsible for allowing it to magnify the penny?
  • Difficulty: N/A
  • Type: MC: Multiple Choice