Q2 CHAPTER 6: Electromagnetic Spectrum Flashcards

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1
Q

_____ traveling disturbance that transparent energy from one location to another

A

Wave

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2
Q

Is the high point of the wave

A

Crest

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3
Q

The number of waves that pass by each second

A

Frequency

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4
Q

Low point of the wave

A

Trough

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5
Q

The maximum displacement of a point of a wave from its rest position

A

Amplitude

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6
Q

Distance between two consecutive point/wave

A

Wavelength

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7
Q

The undisturbed position of the particles if they do not vibrate

A

Rest position

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8
Q

They are used for mobile communication, radar tracking, navigation heating, and microwave ovens and other industrial purposes

A

Microwaves

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9
Q

Heat sensitive equipment is used in thermal imaging cameras to identify hot objects. the ______ thermal imaging is used in the diagnosis of some diseases

A

Infrared waves

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10
Q

Light enables us to see objects. it is used in optical fibers for medicine and communication. plants need light for photosynthesis

A

Visible light

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11
Q

_ are used to sterilize and disinfect medical equipment and various surfaces.

A

Ultraviolet (UV) rays

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12
Q

are used to examine the anterior of a opaque objects, such as the human body, and to analyze crystal structures

A

X-rays

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13
Q

Are used in medicine to destroy malignant tumors and in food irradiation to prolong shelf life

A

Gamma rays

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14
Q

Low frequency radio waves are used for AM radio and telegraphy. high frequency radio waves are used for FM radio and television communications

A

Radio waves

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15
Q

Are radiations in the form of heat, light, and electromagnetic energy that travel through space at the speed of light

A

Electromagnetic waves

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16
Q

Are radiations in the form of heat, light, and electromagnetic energy that travel through space at the speed of light

A

Electromagnetic waves

17
Q

_______ 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. A magnetic field; an electric field

18
Q

Who verified existence of electromagnetic waves?

a. Heinrich hertz
b. James clerk maxwell
c. Both hertz and maxwell
d. Neither hertz nor maxwell

A

a. Heinrich hertz

19
Q

Electromagnetic waves transport ______
a. Electric charge
b. Energy
c. Frequency
d. Wavelength

A

b. Energy

20
Q

Which electromagnetic wave causes sunburn?

a. Infrared waves
b. Microwaves
c. Ultraviolet rays
d. Visible light

A

c. Ultraviolet rays

21
Q

Which of these electromagnetic waves are emitted by hot objects?

a. Infrared waves
b. Microwaves
c. Radio waves
d. X-rays

A

a. Infrared waves

22
Q

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

A

b. All travel at the same speed

23
Q

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

a. Gamma rays

24
Q

Which electromagnetic wave has the highest frequency?

a. Gamma rays
b. Microwaves
c. Radio waves
d. Ultraviolet rays

A

a. Gamma rays

25
Q

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

A

c. They have a short wavelength and high frequency

26
Q

Which electromagnetic wave has the highest frequency?

a. Gamma rays
b. Infrared rays
c. Radio waves
d. X-rays

A

a. Gamma rays