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- They consist of streams of fast-moving particles of negative electricity called electrons
- They cause glass and other materials (zinc sulphide) to fluorescence or glow with a green color
- They cast a shadow of an object in their pathÂ
- They travel in straight linesÂ
- They can rotate a light paddle wheel inside a discharge tube showing they have kinetic energy
- They can produce x-rays
- They can affect photographic plates
- They can produce x-rays from a high-density metal when they are suddenly stopped by such metals
- They are deflected by an electric and magnetic fieldÂ
- They can ionize a gas
- They can produce intense heat on object showing they are highly energetic particles
- They are highly penetrating and can penetrate metals like aluminum foil, steel shape, and gold foil
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