This page contains all the resources used in lessons for Topic 2 as well any others I feel you may find useful. Alongside each topic is also a description of what you are expected to know, this has been taken directly from the specification.
Beyond the Visible
Demonstrate an understanding of how Herschel and Ritter contributed to the discovery of waves outside the limits of the visible spectrum.
Demonstrate an understanding that all electromagnetic waves are transverse and that they travel at the same speed in a vacuum.
Describe the continuous electromagnetic spectrum including (in order) radio waves, microwaves, infrared, visible (including the colours of the visible spectrum), ultraviolet, X-rays and gammarays.
Demonstrate an understanding that the electromagnetic
spectrum is continuous from radio waves to gamma rays, but the radiations within it can be grouped in order of decreasing wavelength and increasing frequency.
Demonstrate an understanding that the potential danger
associated with an electromagnetic wave increases with
Relate the harmful effects, to life, of excessive exposure to the frequency of the electromagnetic radiation, including:
a) microwaves: internal heating of body cells
b) infrared: skin burns
c) ultraviolet: damage to surface cells and eyes, leading to skin cancer and eye conditions
d) X-rays and gamma rays: mutation or damage to cells in the body.
Recall that ionising radiations are emitted all the time by
Describe that ionising radiation includes alpha and beta particles and gamma rays and that they transfer energy.