Ppt-2ndquarter-EM-WAVES

It is a disturbance in space. _______

wave

It is the highest point in a wave. __________

crest

It is the lowest point in a wave. __________

trough

It is the distance from the midpoint to the highest (or lowest) point of a wave. __________

amplitude

It is the distance between two successive identical parts of a wave. __________

wavelength

It refers to the number of waves produced in one second. __________

frequency

It refers to the extent or the limits between which variation is possible. __________

range

Electromagnetic wave is created as a result of vibrations between __________ and __________.

electric field; magnetic field

A wave carries __________ as it propagates.

energy

EM waves can travel through anything even on __________.

vacuum

The speed of EM waves in a vacuum is __________.

3x10^8 m/s

The arrangement of different types of EM waves is called __________.

electromagnetic spectrum

In order of increasing frequency, the EM spectrum includes radio waves, microwaves, __________, visible light, __________, X-ray, and gamma ray.

infrared; ultraviolet

Electromagnetic waves are arranged in the order of their increasing frequency or __________ wavelength.

decreasing

They travel in a vacuum at a speed of __________ m/s.

3x10^8

EM waves show __________, refraction, and absorption.

reflection

X-ray and gamma rays are classified as __________ radiation.

ionizing

Radio waves, microwaves, infrared, and ultraviolet are classified as __________ radiation.

non-ionizing

The electromagnetic spectrum is arranged in a manner of decreasing energy, __________ wavelength, and __________ frequency.

increasing; decreasing

__________ has the longest wavelength, lowest frequency, and lowest energy among all EM waves.

Radio wave

The only EM wave that can be seen by our naked eye is __________.

visible light

__________ has the longest wavelength and __________ has the greatest frequency.

Red; violet

__________ has the shortest wavelength and highest frequency among all EM waves.

Gamma ray