Understanding Radiation

What is the term 'radiation' generally referring to in physics?

• Heat emitted by objects

• Sound waves traveling through air

• Magnetic fields around electric currents

• Energy carried by particles or waves

What type of radiation is considered harmful due to its ability to ionize atoms?

• Non-ionizing radiation

• Ionizing radiation

• Thermal radiation

• Acoustic radiation

Which of the following particles is NOT a type of ionizing radiation?

• Radio waves

• Beta particles

• Gamma particles

• Alpha particles

What is the unit used to measure the energy of radioactive particles?

• Curie

• Joules

• Becquerels

• Electronvolts

How much energy does one megaelectronvolt (MeV) represent?

• One million electronvolts

• One thousand electronvolts

• One billion electronvolts

• One trillion electronvolts

What does one becquerel (Bq) represent?

• One electronvolt of energy

• One joule of energy absorbed

• One curie of radiation

• One nuclear decay per second

What is the standard unit for absorbed radiation dose?

• Rad

• Roentgen

• Sievert

• Gray

How much radiation energy is absorbed in one gray?

• One electronvolt per kilogram

• One becquerel per second

• One joule per kilogram

• One curie per second

Which unit is used to account for the different health risks associated with various types of ionizing radiation?

• Gray

• Becquerel

• Sievert

• Roentgen

What is the factor used to convert grays to sieverts for alpha particles?

• 100

• 20

• 10

• 1