The video explores the evolution of perceptions about radioactivity, from a miraculous discovery to a source of fear. It explains atomic structure, stability, and radioactive decay, highlighting the contributions of Marie Curie and others. The video discusses the immense power and potential risks of radioactivity, citing historical incidents like Chernobyl and Fukushima. It also covers beneficial applications, such as medical treatments and carbon dating, emphasizing that radioactivity is ubiquitous but manageable.

How was radioactivity perceived 120 years ago?

• As a tool for warfare

• As a dangerous phenomenon

• As a fictional concept

• As a miraculous source of health

What is the role of the nucleus in an atom?

• To emit light

• To maintain atomic stability

• To create chemical reactions

• To provide energy

Which type of radiation is the most penetrating?

• Beta particles

• Alpha particles

• Neutrons

• Gamma rays

Who was a key figure in the discovery of radioactivity?

• Niels Bohr

• Marie Curie

• Albert Einstein

• Isaac Newton

What is the main risk associated with nuclear energy?

• Environmental pollution

• Limited resources

• Ionizing radiation

• High cost

What was the impact of the Chernobyl disaster?

• It caused widespread radiation exposure

• It improved reactor safety protocols

• It led to the discovery of new elements

• It increased nuclear energy production

How can radioactivity be beneficial in medicine?

• By improving vision

• By causing mutations

• By treating cancer

• By enhancing physical strength

What is the role of radioactive iodine in healthcare?

• To enhance brain function

• To improve bone density

• To treat thyroid cancer

• To diagnose heart conditions

What is a common use of radioactive carbon-14?

• In nuclear reactors

• In smoke detectors

• In food preservation

• In carbon dating

What should you do if a Geiger counter starts crackling?

• Stay calm and observe

• Run away quickly

• Take a photo

• Call for help