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Review of Waves and RaysSNC2D
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Similarities and Difference between Waves and Rays?
• Similarities: • They all have a wave pattern• They all transfer energy from one point to
another• Differences: • Waves have longer wavelengths than rays• Waves have smaller frequency levels than
rays
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Question 1:
Which type of electromagnetic radiation has the longest wavelength?
Radio Waves
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Question 2:
Which type of electromagnetic radiation has the shortest wavelength?
Gamma Rays
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Question 3:
This type of electromagnetic radiation is used in radars to measure automobile speed
Microwaves
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Question 4:
Alarms and motion sensors all use this form of electromagnetic radiation
Infrared Waves
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Question 5:
T F A small amount of ultraviolent rays is healthy for humans
TRUE! We get Vitamin D from the Sun!
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Question 6:
Which two types of electromagnetic radiation can penetrate through human tissue?
X-rays and Gamma rays
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Question 7:
This type of electromagnetic radiation is used to kill cancer cells – unfortunately they also kill some healthy cells as well
Gamma rays
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YOUR TASK – You have 10 minutes!You are an investigator trying to figure out a murder
case. Write a scenario where you use EACH type of electromagnetic radiation. Be as creative as you wish.