Science - 2018-19

PS.9 d - Electromagnetic Spectrum

The student will investigate and understand the characteristics of transverse waves. Key concepts include

d) the electromagnetic spectrum.


Bloom's Levels:  Analyze; Understand

Adopted: 2010

BIG IDEAS

  • The wavelength and frequency of a light wave gives its observable color.
  • Waves have a variety of applications, including communication.

  • I can explain why x-rays can show my bones, but other waves cannot.

UNDERSTANDING THE STANDARD

  • Electromagnetic waves are arranged on the electromagnetic spectrum by wavelength. All types of electromagnetic radiation travel at the speed of light, but differ in wavelength. The electromagnetic spectrum includes gamma rays, X-rays, ultraviolet, visible light, infrared, and radio and microwaves.
  • Radio waves are the lowest energy waves and have the longest wavelength and the lowest frequency. Gamma rays are the highest energy waves and have the shortest wavelength and the highest frequency. Visible light lies in between and makes up only a small portion of the electromagnetic spectrum.

ESSENTIALS

In order to meet this standard, it is expected that students will

d) compare the various types of electromagnetic waves in terms of wavelength, frequency, and energy.


KEY VOCABULARY

reflection, refraction, diffraction, interference, electromagnetic spectrum, electromagnetic radiation, transverse, gamma waves, x-rays, ultraviolet, visible light, infrared, radio waves, microwaves

Updated: Jun 29, 2018