EM WAVES

Question 1

A disturbance in Space

Answer 1

WAVE

Question 2

the highest point in a wave

Answer 2

CREST

Question 3

Lowest point in a wave

Answer 3

TROUGH

Question 4

distance from the midpoint to the highest point or lowest point of the wave

Answer 4

AMPLITUDE

Question 5

distance between two successive identical parts of a wave

Answer 5

WAVELENGTH

Question 6

number of waves produced in one second

Answer 6

FREQUENCY

Question 7

travels as a vibration in electrical and magnetic field

Answer 7

ELECTROMAGNETIC WAVE

Question 8

consists of waves at all possible energies, frequencies, and wavelengths

Answer 8

ELECTROMAGNETIC SPECTRUM

Question 9

produced by oscillating electric charges with the electric field and magnetic field vibrating perpendicularly to eachother

Answer 9

ELECTROMAGNETIC WAVES/RADIATIONS

Question 10

in 1862, he predicted the existence of electromagnetic waves.

Answer 10

JAMES CLERK MAXWELL ( SCOTTISH PHYSICIST)

Question 11

in 1887, through the efforts of him, those waves other than light were observed to exist

Answer 11

HEINRICH HERTZ ( GERMAN PHYSICIST)

Question 12

the continuous range of electromagnetic waves arranged in order of frequency or wavelength. It is divided into regions on the basis of a certain frequency or wavelength interval

Answer 12

EM SPECTRUM

Question 13

The longest of all electromagnetic waves

Answer 13

RADIO WAVES

Question 14

an acronym for radio detection and ranging

Answer 14

RADAR

Question 15

Radio waves were discovered by who

Answer 15

Heinrich Hertz in 1887

Question 16

They are produced by an alternating current (AC) circuit attached to antenna.

Answer 16

RADIO WAVES

Question 17

who was credited for discovering microwaves?

Answer 17

JAMES CLERK MAXWELL IN 1864

Question 18

considered as high-frequency radio waves and are mainly used for communication

Answer 18

MICROWAVES

Question 19

Literally means “below red”

Answer 19

INFRARED

Question 20

have a lower frequency than the red part of the visible light.

Answer 20

INFRARED WAVES

Question 21

who discovered the Infrared waves?

Answer 21

WILLIAM HERSCHEL IN 1800

Question 22

waves that is the only one seen by our naked eye

Answer 22

VISIBLE LIGHT

Question 23

sequence of colors from longest to shortest

Answer 23

ROYGBIV

Question 24

The region next to visible light, and more popularly known as UV

Answer 24

ULTRAVIOLET RADIATION

Question 25

who discovered the UV RAYS?

Answer 25

JOHANN WILHEM RITTER

Question 26

3 kinds of uv radiation

Answer 26

UVA, UVB, UVC

Question 27

filtered by the ozone in the atmosphere and does not reach the Earth's surface.

Answer 27

UVB

Question 28

accounts for 95% of the solar UV reaching the Earth

Answer 28

UVA

Question 29

x-rays are sometimes called

Answer 29

ROENTGEN RAYS

Question 30

who discovered the x-rays?

Answer 30

WILHEM CONRAD ROENTGEN

Question 31

- X-rays can penetrate soft substances like flesh and bones

Answer 31

Soft X-rays

Question 32

- X-rays are more penetrating than the soft ones and are used mainly in industries

Answer 32

Hard X-rays

Question 33

used to detect abnormalities in the skeletal system like fractures and tumors. They are also used in dental imaging.

Answer 33

X-RAYS

Question 34

are highly penetrating because of their very short wavelengths.

Answer 34

GAMMA RAYS

Question 35

who discovered the gamma rays?

Answer 35

PAUL VILLARD IN 1900

Question 36

used in industries to detect cracks in metals and to sterilize equipment and commercial product.

Answer 36

GAMMA RAYS

Question 37

Gamma rays are also used to destroy cancer cells in a process called 

Answer 37

RADIOTHERAPY

Question 38

In internal radiotherapy, radiation comes from implants or liquids placed inside the body. This is sometimes called _

Answer 38

BRACHYTHERAPY

Question 39

is the process of removing electrons from neutral atoms

Answer 39

IONIZATION