P13.1 The electromagnetic spectrum

Question 1

What are electromagnetic waves?

Answer 1

Electric and magnetic disturbances can be used to transfer energy from source to absorber.

Question 2

What are the parts of the electromagnetic wave spectrum?

Answer 2

Radio waves: 1km.
Microwaves.
Infrared:1mm.
Visible light.
Ultraviolet radiation:1nm.x-rays and gamma rays: 1pm.

Question 3

How can you work out the speed of electromagnetic waves?

Answer 3

All electromagnetic waves travel at speed of 3*10(to power of eight)m/s (300million m/s) through vacuum or space. Distance waves travel each second.
Can link speed of waves to frequency + wavelength by use of wave speed equation.

Question 4

What is the wave speed equation?

Answer 4

Wave speed, v (m/s) = frequency, f (Hz) * wavelength, ƒ (m).

Question 5

Do electromagnetic waves transfer matter?

Answer 5

No.

Question 6

What does the energy that electromagnetic waves transfer depend on?

Answer 6

The wavelength of the waves.

Question 7

What is the order of the electromagnetic spectrum?

Answer 7

Radio waves.
Microwaves.
Infrared.
Visible light.
Ultraviolet radiation.
X-rays.
Gamma rays.