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Science > ELECTROMAGNETIC WAVES > Flashcards

ELECTROMAGNETIC WAVES Flashcards

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1
Q

A system used for tagging and identifying automobiles such as cars, SUVs, trucks, buses, and works through a small chip

A

RADIO FREQUENCY IDENTIFICATION

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2
Q

RFID

A

Radio Frequency identification

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3
Q

Commonly used in the Electronic Toll Collection (ETC) to speed up payments and avoid congestion in tollways

A

Radio Frequency identification

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4
Q

All info are relayed _

A

ELECTRONICALLY VIA RADIO WAVES

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5
Q

Another technology that uses radio waves

A

WI-FI

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6
Q

One form of electromagnetic wave

A

RADIO WAVE

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7
Q

He described how a changing electric field produces a magnetic field

A

JAMES MAXWELL

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8
Q

Predicted that the end result of these interchanging fields was a train of invisible waves…

A

MAXWELL

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9
Q

These waves are the carriers of _

A

Electromagnetic energy

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10
Q

Electromagnetic energy is also known as _

A

Electromagnetic radiation

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11
Q

EM waves were the first generated and detected by _

A

Heinrich Hertz in 1887

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12
Q

They are classified as _

A

Transverse Waves

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13
Q

Represents the family of EM waves

A

Electromagnetic spectrum

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14
Q

_ have longer wavelengths

A

Low-frequency waves

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15
Q

Have shorter wavelengths

A

High-frequency waves

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16
Q

Em waves carry energy called_

A

Radiation

17
Q

The higher the frequency of a wave,-

A

The more energy it carries and the more hazard it poses

18
Q

_ are Em waves used for communication

A

Radio waves

19
Q

Another energy unit commonly used in atomic physics and quantum physics

A

ELECTRONVOLT

20
Q

It represents the energy of an electron

A

ELECTRONVOLT

21
Q

Low-frequency electromagnetic waves include:

A

RADIO WAVES, MICROWAVES, INFRARED RAYS, AND VISIBLE LIGHT

22
Q

Lowest frequency (10^3 to 10^10 Hz) but the longest wavelength (10^-3 to 10^5 m)

A

RADIO WAVES

23
Q

They can travel long distances through obstacles

A

RADIO WAVES

24
Q

Used for communication

A

RADIO WAVES

25
Q

Are classified based on their wavelength

A

RADIO WAVES

26
Q

Has a wavelength of 1 to 2km

A

LONG WAVE

27
Q

Has a wavelength of around 100 m and is used in amplitude modulation

A

MEDIUM WAVE

28
Q

This wave had a frequency range from 550 to 1600 Hz

A

MEDIUM WAVE

29
Q

Waves have wavelengths of around 2m

A

VERY HIGH FREQUENCY

30
Q

These are used by frequency-modulated (FM) radio stations

A

VERY HIGH FREQUENCY WAVES

31
Q

Other class of radio waves is called

A

ULTRAHIGH FREQUENCY

32
Q

Wavelengths of less than a meter

A

ULTRAHIGH FREQUENCY

33
Q

Type of radio waves used in broadcasting, cordless phones, etc

A

ULTRAHIGH FREQUENCY WAVES

34
Q

Are a useful form of EM waves

A

RADIO WAVES

35
Q

Too much exposure to high-frequency radio waves may cause-

A

CANCER, LEUKEMIA, AND ETC

Science (15 decks)

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