Radioactivity Quiz

Who accidentally discovered radioactivity while studying fluorescence?

• Henri Becquerel

• Marie Curie

• Niels Bohr

• Albert Einstein

What did Becquerel find when he developed the photographic plates?

• They were broken

• They were fogged as if exposed to light

• They were clear and unaffected

• They were missing

What is the term used to describe the radiation emitted by substances with atomic numbers greater than 83?

• Phosphorescence

• Radioactivity

• Luminescence

• Fluorescence

Which type of radiation is not deflected by magnetic fields?

• All are deflected

• Gamma rays

• Beta particles

• Alpha particles

What is the composition of an alpha particle?

• Two electrons

• One proton and one neutron

• One electron and one proton

• Two protons and two neutrons

What is the speed of beta particles relative to the speed of light?

• Zero

• Greater than the speed of light

• Less than the speed of light

• Equal to the speed of light

Which type of radiation is identical to a helium nucleus?

• Beta particles

• Alpha particles

• Gamma rays

• X-rays

Which type of radiation has the highest penetrating power?

• Beta particles

• All have the same penetrating power

• Gamma rays

• Alpha particles

What is the primary use of gamma rays in medicine?

• To diagnose fractures

• To measure blood pressure

• To cure infections

• To treat cancer

What happens to gamma rays when they pass through a magnetic field?

• They are deflected to the right

• They are deflected to the left

• They are absorbed

• They remain unaffected