The electromagnetic spectrum Flashcards Preview

GCSE Physics: Topic 13 > The electromagnetic spectrum > Flashcards

Flashcards in The electromagnetic spectrum Deck (13):
1

What are electromagnetic waves?

Electric and magnetic disturbances

2

What do all electromagnetic waves do?

Travel as waves

transfer energy from a source to an absorber

3

How do all electromagnetic waves travel?

Travel through a space (vacuum) at the same speed

different wavelengths and frequencies

4

What is electromagnetic spectrum?

All of the waves together

group according to wavelength and frequency

5

Name electromagnetic spectrum

longest wavelength to shortest wavelength

  • Radio waves
  • Microwaves
  • Infrared
  • Visible light
  • Ultraviolet
  • X-rays
  • Gamma ways

6

What is wavelength of radio waves?

Wavelengths up to 104m

7

What is wavelength of gamma rays?

Wavelengths as short as 10-15m

8

What is the spectrum?

Continous

9

How is different parts of spectrum are not precisely defined?

Frequencies and wavelengths at boundaries

are approximate

10

What happens to different wavelengths of electromagnetic radiation?

Reflected

abosrbed

or transmitted differently by different substances and types of surface

11

What happens the higher the frequency of electromagenetic wav

The more energy it transfers

12

What wave speed do all electromagnetic waves travel through space/vacuum?

300 million m/s

13

How to calculate wave speed?

v = f * λ

v = wave speed m/s

f = frequency , N

λ = wavelength , m