science

Question 1

are waves that are created as a result of vibrations between an electric field and a magnetic field.

Answer 1

Electromagnetic Waves

Question 2

The Scottish physicist and mathematician (1831- 1879) took four equations of electromagnetism and generalized them.

He used those equations, now collectively known as Maxwell Equation, to mathematically predict the existence of electromagnetic

Answer 2

James Clerk Maxwell

Question 3

The experimental proof to Maxwell’s theory came in 1887 when German scientist (1857-1894) finished his years-long work at generating, detecting, and measuring the properties of electromagnetic waves. He measured their speed, confirming what Maxwell predicted. They traveled at the speed of light.

Answer 3

Heinrich Hertz

Question 4

In the early 1900s, Italian inventor used radio waves in the system of wireless telegraphy, through which messages were sent wirelessly from one device to another.

Answer 4

Guglielmo Marconi

Question 5

the region around a magnetic material or a moving electric charge within which the force of magnetism acts.

Answer 5

Magnetic field

Question 6

the physical field that surrounds electrically charged particles and exerts force on all other charged particles in the field, either attracting or repelling them.

Answer 6

Electric field

Question 7

is an electrical instrument for measuring electric charge.

Answer 7

Electrometer

Question 8

is a device that measures magnetic field.

Answer 8

Magnetometer

Question 9

two kinds of waves

Answer 9

Transverse Waves and Longitudinal Waves

Question 10

motion in which all points on a wave oscillate along paths at right angles to the direction of the wave’s advance. Surface ripples on water, seismic S (secondary) waves, and electromagnetic (e.g., radio and light) waves are examples of () waves

Answer 10

Transverse Waves

Question 11

a wave (such as a sound wave) in which the particles of the medium vibrate in the direction of the line of advance of the wave.

Answer 11

Longitudinal wave

Question 12

Is the distance between two identical points on the wave

Answer 12

Wavelength

Question 13

the number of waves that pass a fixed point in unit time; also, the number of cycles or vibrations undergone during one unit of time by a body in periodic motion.

Answer 13

frequency

Question 14

refers to the maximum amount of displacement of a particle on the medium from its rest position.

Answer 14

amplitude

Question 15

The highest surface part of a wave is called?

Answer 15

Crest

Question 16

The lowest part is the?

Answer 16

trough