Name: __________________________
Date: ______________
Electromagnetic Spectrum
Electromagnetic Spectrum (Slide 2)
• The entire range of electromagnetic waves from __________ frequency to __________ frequency
• Electromagnetic waves are forms of __________ energy that travel the ____________________________________
• Used for many purposes in daily life – ____________________________________________________________________
• _____ categories – radio waves, ____________________, infrared rays, visible light, ____________________ rays, xrays, and ____________________ rays
Radio Waves (Slide 3)
• ____________________ frequency and ____________________ wavelength of all electromagnetic waves
• Able to be picked up by an ____________________ and sent through wires to produce ____________________
• Used for ____________________ , ____________________ , ____________________ , and navigation systems
Microwaves (Slide 4)
• A form of ____________________ wave with the ____________________ wavelength and ____________________
frequency
• Able to ____________________ food and cause it to get ____________________
• Used for ____________________ , mobile phone signals, ____________________ , and traffic speed cameras
Infrared Rays (Slide 5)
• ____________________ wavelength and ____________________ frequency than ____________________
• Can be felt as ____________________ from an incandescent light bulb
• Used for ______________________________, keeping cafeteria food warm, and ______________________________
Visible Light (Slide 6)
• The part of the electromagnetic spectrum that the human eye is able to ____________________
• Humans see these waves as the ____________________ of the ____________________
• ____________________ – red has the longest wavelength and violet has the shortest wavelength
Ultraviolet Rays (Slide 7)
• ____________________ rays that are a part of the energy that comes from the ____________________
• Can be ____________________ or ____________________ to humans
• Used for ____________________ surgical equipment and treating ____________________
• Too much exposure to ultraviolet rays from the Sun or tanning beds can lead to severe ____________________
and ______________________________
X-Rays (Slide 8)
• Very ____________________ wavelength that is able to pass through many ____________________ materials
• Able to penetrate the human body and be ____________________ by ____________________ to produce an
image
• Too much exposure can cause ____________________ damage and ____________________
• Used for medical ____________________ and ____________________ security
Gamma Rays (Slide 9)
• ____________________ frequency and ____________________ wavelength of all electromagnetic waves
• Contains the greatest amount of ____________________
• Gamma rays are given off by ____________________ and some radioactive substances
• Used to help ____________________ cancer and ____________________ cancer cells
Checkpoint (Slides 10-15)
Question 1: What is the electromagnetic spectrum? Explain in your own words.
Question 2: Describe the relationship between the frequency and wavelength of electromagnetic waves.
Question 3: Identify one way understanding the electromagnetic spectrum is beneficial.
Question 4: Identify the type of wave that would be located at Point A below.
A
Question 5: Identify the type of wave that would be located at Point B below.
B