Radiation

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
The electromagnetic is a huge family of waves. The longest are many kilometres going down the the shortest which are 10^-14 m. The shortest wavelengths are about the size of the of an atom.

The shortest waves carry the energy. These waves are called rays.

All electromagnetic waves can travel in a . Their is 300 million m/s. Nothing can travel faster than this.

Electromagnetic waves are , while waves are longitudinal.