Cathode rays consist of negatively charged particles called electrons. These electrons move away from cathode with very high speeds. These fast moving electrons collide with the molecules of the gas in the tube, split the molecule into atoms, and remove one or more electrons from the atoms.
Gamma rays are emitted by almost all radioactive materials. Main characteristics of gamma rays are; The γ-rays have high penetrating power. These can even penetrate a 15 cm thick sheet of steel. The γ-rays also affect the photographic plate.
Some of the most important properties of cathode rays are : Cathode rays travel in straight lines. That is why, cathode rays cast shadow of any solid object placed in their path. The path cathode rays travel is not affected by the position of the anode.
The properties of Cathode Rays are: They are a stream of fast-moving electrons. Each electron carries a negative charge of 1.6 * 10-19 C and has a mass of 1/1840 amu (atomic mass unit, 1 amu = mass of proton or neutron).