Exploring Nuclear Radioactivity Concepts

What type of radioactive decay involves the emission of a helium nucleus?

• Beta decay

• Alpha decay

• Gamma decay

• Neutron emission

Which of the following particles is emitted during beta decay?

• Proton

• Neutron

• Electron

• Helium nucleus

What is the half-life of a radioactive substance?

• The time it takes for the substance to completely decay

• The time it takes for half of the radioactive atoms to decay

• The time it takes for the substance to become non-radioactive

• The time it takes for the substance to double in mass

If a radioactive isotope has a half-life of 10 years, how much of a 100g sample remains after 30 years?

• 100g

• 50g

• 25g

• 12.5g

Which of the following is a common application of radioactivity in medicine?

• X-ray imaging

• MRI scanning

• Chemotherapy

• Radiotherapy

Which device is commonly used to detect radiation?

• Thermometer

• Geiger-Müller counter

• Barometer

• Anemometer

What is the primary difference between nuclear fission and fusion?

• Fission combines nuclei, fusion splits them

• Fission splits nuclei, fusion combines them

• Both fission and fusion split nuclei

• Both fission and fusion combine nuclei

Which of the following is a product of nuclear fission?

• Helium

• Hydrogen

• Neutrons

• Electrons

What is a common fuel used in nuclear fusion reactions?

• Uranium-235

• Plutonium-239

• Deuterium

• Thorium

Which of the following is a potential health effect of radiation exposure?

• Improved vision

• Increased energy

• Cancer

• Enhanced immune system