Exploring Radioactivity Concepts

What type of radioactive decay involves the emission of an alpha particle?

• Positron emission

• Gamma decay

• Alpha decay

• Beta decay

Which of the following is a characteristic of beta decay?

• Emission of beta particles (electrons or positrons) from the nucleus.

• Conversion of neutrons into protons without particle emission.

• Emission of alpha particles from the nucleus.

• Absorption of beta particles by the nucleus.

What is the half-life of a substance that decays from 80g to 20g in 12 years?

• 4 years

• 8 years

• 6 years

• 10 years

Which type of radiation is the most penetrating?

• X-rays

• Beta particles

• Alpha particles

• Gamma rays

What is a common application of radioactivity in medicine?

• Surgical procedures using radioactive materials.

• Blood transfusions with radioactive blood.

• Diagnostic imaging using PET scans.

• Radiation therapy for cancer treatment.

Which of the following materials is commonly used to shield against gamma radiation?

• Lead

• Aluminum

• Plastic

• Wood

What is the primary safety concern when handling radioactive materials?

• Physical injury from heavy equipment

• Chemical burns from handling materials

• Exposure to radiation

• Inhalation of toxic fumes

Which instrument is used to detect alpha particles?

• Beta particle detector

• Geiger-Müller counter

• Mass spectrometer

• X-ray spectrometer

What is the process called when a radioactive isotope transforms into a stable isotope?

• Chemical reaction

• Radioactive decay

• Nuclear fusion

• Isotope stabilization

Which of the following is a historical figure associated with the discovery of radioactivity?

• Marie Curie

• Isaac Newton

• Albert Einstein

• Thomas Edison