What is Alpha, Beta and Gamma Radiation?

What is the range of alpha radiation in air? 

• a few feet

• a few centimeters

Alpha particles can penetrate 

• through the outer skin layer

• through the deep skin layers

• It cannot penetrate at all.

Beta radiation consist of (a)____________________, which compared to alpha particles have much (b)________________ mass.

• (a) electrons

  (b) lower

• (a) protons

  (b) higher

• (a)electrons

  (b) higher

What is the range of beta  radiation in air? 

• a few feet

• a few meters

• a few centimeters

Gamma rays are

• electrons

• protons

• photons of energy

What is the relationship between the masses of these particles and their range in the air?

• The more massive particles have more inertia that tends to carry them farther through air.

• The less (or non) massive particles, like electrons and photons, travel much further through the air.