Q2 CHAPTER 6: Electromagnetic Spectrum Flashcards
_____ traveling disturbance that transparent energy from one location to another
Wave
Is the high point of the wave
Crest
The number of waves that pass by each second
Frequency
Low point of the wave
Trough
The maximum displacement of a point of a wave from its rest position
Amplitude
Distance between two consecutive point/wave
Wavelength
The undisturbed position of the particles if they do not vibrate
Rest position
They are used for mobile communication, radar tracking, navigation heating, and microwave ovens and other industrial purposes
Microwaves
Heat sensitive equipment is used in thermal imaging cameras to identify hot objects. the ______ thermal imaging is used in the diagnosis of some diseases
Infrared waves
Light enables us to see objects. it is used in optical fibers for medicine and communication. plants need light for photosynthesis
Visible light
_ are used to sterilize and disinfect medical equipment and various surfaces.
Ultraviolet (UV) rays
are used to examine the anterior of a opaque objects, such as the human body, and to analyze crystal structures
X-rays
Are used in medicine to destroy malignant tumors and in food irradiation to prolong shelf life
Gamma rays
Low frequency radio waves are used for AM radio and telegraphy. high frequency radio waves are used for FM radio and television communications
Radio waves
Are radiations in the form of heat, light, and electromagnetic energy that travel through space at the speed of light
Electromagnetic waves
Are radiations in the form of heat, light, and electromagnetic energy that travel through space at the speed of light
Electromagnetic waves
_______ and a changing magnetic field gives rise to ________
a. A magnetic field; an electric field
b. A magnetic field; another magnetic field
c. Another electric field an electric field
d. Another electric field; another magnetic field
a. A magnetic field; an electric field
Who verified existence of electromagnetic waves?
a. Heinrich hertz
b. James clerk maxwell
c. Both hertz and maxwell
d. Neither hertz nor maxwell
a. Heinrich hertz
Electromagnetic waves transport ______
a. Electric charge
b. Energy
c. Frequency
d. Wavelength
b. Energy
Which electromagnetic wave causes sunburn?
a. Infrared waves
b. Microwaves
c. Ultraviolet rays
d. Visible light
c. Ultraviolet rays
Which of these electromagnetic waves are emitted by hot objects?
a. Infrared waves
b. Microwaves
c. Radio waves
d. X-rays
a. Infrared waves
Which is true about all electromagnetic waves?
a. All have the same energy
b. All travel at the same speed
c. All have the same frequency
d. All have the same wavelength
b. All travel at the same speed
Which electromagnetic wave has the highest penetrating ability and is only emitted during high energy nuclear reactions?
a. Gamma rays
b. Infrared rays
c. Radio waves
d. X-rays
a. Gamma rays
Which electromagnetic wave has the highest frequency?
a. Gamma rays
b. Microwaves
c. Radio waves
d. Ultraviolet rays
a. Gamma rays
Which of the following is true about x-rays?
a. They are visible to the naked human eye
b. They do not have a potential to ionize atoms
c. They have a short wavelength and high frequency
d. They have a lower energy than most of the other types of electromagnetic wave
c. They have a short wavelength and high frequency
Which electromagnetic wave has the highest frequency?
a. Gamma rays
b. Infrared rays
c. Radio waves
d. X-rays
a. Gamma rays
