Electromagnetic spectrum

Question 1

He formulated the electromagnetic theory, which established a closer relationship

Answer 1

James Clerk Maxwell

Question 2

These are produced by accelerating charged particles, such as vibrating electrons

Answer 2

electromagnetic waves

Question 3

He verified the predictions of Maxwell.

Answer 3

Heinrich Hertz

Question 4

electromagnetic waves are sometimes called ____

Answer 4

Hertzian waves.

Question 5

He calculated the speed of the electromagnetic waves and determined that it was equal to the measured speed of light, as Maxwell had predicted.

Answer 5

Heinrich Hertz

Question 6

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

Answer 6

Electromagnetic waves

Question 7

Enumerate the electromagnetic radiations. (5)

Answer 7

radio waves, microwaves, infrared waves, ultraviolet rays, X-rays, and gamma rays

Question 8

Identify the application of electromagnetic radiation.

Low-frequency of this waves are used for AM radio and telegraphy. High-frequency waves are used for FM radio and television communications.

Answer 8

radio waves

Question 9

Identify the application of electromagnetic radiation.

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

Answer 9

Infrared Waves

Question 10

Identify the application of electromagnetic radiation.

It is used in optical fibers for medicine and communication. Plants need this for photosynthesis

Answer 10

Visible Light

Question 11

Identify the application of electromagnetic radiation.

Used to examine the interior of opaque objects, such as the human body. and to analyze crystal structures.

Answer 11

X-rays

Question 12

Identify the application of electromagnetic radiation.

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

Answer 12

microwaves

Question 13

Identify the application of electromagnetic radiation.

These rays are used to sterilize and disinfect medical equipment and various surfaces.

Answer 13

UV rays

Question 14

Identify the application of electromagnetic radiation.

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

Answer 14

Gamma rays

Question 15

Enumerate Radio Frequency Bands. (5)

Answer 15

Long waves (low frequency
Medium waves (medium frequency)
Short waves (high frequency)
VHF (very high frequency)
UHF (ultra high frequency)
SHF (super high frequency)

Question 16

infrared waves you feel are known as ___

Answer 16

radiant heat

Question 17

____ is the most familiar form of electromagnetic wave. It is the only part of the electromagnetic spectrum that can be seen with the naked human eye.

Answer 17

Visible light

Question 18

These are enough to trigger a chemical change in skin pigments, resulting in skin darkening.

Answer 18

UV Rays

Question 19

Where are electromagnetic waves beneficial or harmful?

Answer 19

On living organisms

On the environment