3.10-3.13 the electromagnetic spectrum

Question 1

state a use of each electromagnetic wave

Answer 1

microwaves: cooking & satellite transmissions

radio waves: broadcasting & communications

infrared: heaters & night vision

visible light: optical fibres & photography

ultra violet: flourescent lamps

x-rays: observing internal structure of objects

gamma rays: sterilisation

Question 2

state all the different waves part of the electomagnetic spectrum in increaseing frequency

Answer 2

microwaves, radio waves, infrared radiation, visible light, ultraviolet, x-rays, gamma rays

Question 3

state some potential dangers of different electromagnetic waves

Answer 3

microwaves: internal heating of body tissue

infrared: skin burns

ultraviolet: damage to surface cells & blindness

gamma rays: cancer