electromagnetic spectrum

electromagnetic spectrum

1. light

   • light can travel through a vacuum
   • produce from sources such as the sun
   • to see things

2. microwaves

   • to cook
     • causes water and fat molecules to virbate
       • which cooks the substance
   • mobile phones
     • have micro chips that
       • pick up signals from antenna
   • needs no median to travel.
   • made by transmitters such as antennas
   • high frequency raido waves
   • can cause damage to the brain
   • raido waves
     • cause cancer
     • used for tv and raido

3. median

   • an object need for some types of waves such as sound needs water to travel

4. gamma rays

   • given off by stars and some radioatcive subtsances
   • pass through most materials
   • lead or concrete to bolck
   • used to kill cancer cells
   • causes cancer and mutations

5. infra red

   • given off by stars,lamps and frie
   • to see in dark
   • it causes overheating

6. ultra voilet

   • comes from the sun
   • killing microbes
   • sun burn and skin cancer
   • vitamin d

7. x- rays

   • made by stars and machines
   • travel though anything
   • to see broken bones
   • airport security
   • cell damage
   • cancer