What is the difference between a mechanical wave and an electromagnetic wave?
What did you include in your response? Check all that apply.
⇒ gamma
73620
✔ radio wavesgamma raysultraviolet raysinfrared
What are three ways in which people use microwaves?
Three ways people use microwaves include cooking and heating food in microwave ovens, transmitting signals for cell phones and television, and using radar for weather tracking and navigation.
✔ shorterlongerthe same
Which are characteristics of electromagnetic waves? Check all that apply.They travel only through matter.Waves with a higher frequency have a shorter wavelength.Waves with a higher frequency have a longer wavelength.They all move at the same speed.They can travel through space.
Olivia wants to find out whether a substance will fluoresce. She says she should put it in a microwave oven. Do you agree with her? Why or why not?
I disagree with Olivia. Fluorescence is the property of absorbing light of short wavelengths (like ultraviolet light) and emitting light of longer wavelengths. Therefore, she should use ultraviolet light to see if the substance fluoresces. Microwaves have much longer wavelengths and lower energy than ultraviolet light and are typically used for cooking or communication, not for testing fluorescence.
What makes thermal imaging cameras useful?
What did you include in your response? Check all that apply.
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