Question bank: Waves: Radiations and Their Risks

A group of scientists conducted a study on exposure to radiation emitted by cell phones and its possible effects on human health. It was observed that the main type of radiation emitted by cell phones is non-ionizing radiation, which is a form of electromagnetic wave. In this context, answer: a) Explain the difference between ionizing and non-ionizing radiation, providing examples of each type; b) Discuss the possible effects of non-ionizing radiation on human health, considering prolonged use of cell phones; c) Indicate some measures recommended by scientists to reduce the risks associated with exposure to non-ionizing radiation from cell phones.

In the past year, a nuclear power plant had a radioactive material leak in one of its reactors. This incident raised concerns about the population's exposure to ionizing radiation and its health risks. Based on the presented context, answer: a) Explain what ionizing radiation is and what is the difference between it and non-ionizing radiation. b) Name three types of ionizing radiation and their respective risks to human health. c) Suggest two protective measures that can be taken to minimize health risks when dealing with ionizing radiation.

Radiations are forms of energy that propagate in space, and can be natural or artificial. Natural radiations come from sources such as sunlight, cosmic rays, and terrestrial heat, while artificial radiations are those generated by human sources such as electronic devices and nuclear power plants. Which of these sources are not related to artificial radiations?

Electromagnetic radiations are invisible and can be found in various forms, such as radio waves, X-rays, and ultraviolet radiation. These radiations have different energy levels and each of them presents a different risk to human health. Which of the alternatives below correctly indicates which of the electromagnetic radiations poses the highest risk to human health?