Contextualization

Radiations are a natural and inevitable phenomenon, present in various contexts on our planet, from sunlight to the electronic equipment we use daily. Understanding what they are, how they behave, and, above all, their effects on health and the environment is essential for the development of an increasingly safety and sustainability-conscious awareness.

Radiations can be classified according to their nature and energy. In the context of our study, we are particularly interested in ionizing radiations, capable of removing electrons from atoms and molecules, and non-ionizing radiations, which do not have this capacity. These, associated with fundamental Physics concepts such as energy, power, and intensity, form our key theoretical basis.

The idea of radiations may initially seem a bit abstract, however, these are concepts that permeate our daily lives and allow us to explain a series of phenomena around us. Radiations are responsible for our tanning in the summer, going through X-ray images to the possibility of radioactive contamination. Understanding what radiations are and what they can cause is an essential skill for the citizen of the 21st century.

Theoretical Introduction

Firstly, it is important to understand that radiation is a form of energy in transit. It can be transmitted through electromagnetic waves (such as visible light, radio waves, or X-rays) or subatomic particles (beta particles, alpha particles, or neutrinos).

In this sense, ionizing radiation is the one capable of removing electrons from atoms and molecules, turning them into ions. This is the case of X-rays, for example. This type of radiation can cause serious harm to living organisms, including genetic mutations. Non-ionizing radiation, such as microwaves, has insufficient energy to ionize atoms or molecules.

Furthermore, it is essential to know that the electromagnetic spectrum is the term given to the classification of electromagnetic radiations according to their frequency and, consequently, energy. This concept allows us to distinguish between radiations of different types and understand their different effects.

The following websites can be used as a starting point for your study:

1. Radiations: types, origins, and effects
2. Ionizing Radiation
3. Non-ionizing Radiations
4. The electromagnetic spectrum <\END>

Practical Activity

Activity Title: Unveiling Radiations

Project Objective

This project aims to enable students to understand the theoretical concepts of different types of radiations and their risks and apply their knowledge in a practical and interdisciplinary project.

Detailed Project Description

Students, organized in groups of 3 to 5, should develop a presentation and an educational booklet on the risks of ionizing and non-ionizing radiations for humans and the environment. The work should involve in-depth research on the topic, including understanding of physics, chemistry, and biology concepts related to the theme, as well as preparation and presentation of didactic material.

Necessary Materials:

Computer with internet access, software for creating presentations (PowerPoint, Keynote, Google Slides, among others) and software for creating booklets (Word, Google Docs, Canva, among others).

Detailed Step-by-Step for Carrying Out the Activity

1. Research and Theoretical Deepening: Start with in-depth research and readings on ionizing and non-ionizing radiation, their effects on human health and the environment. Remember to explore various resources, such as books, scientific articles, reliable websites, educational videos, etc.

2. Planning the Presentation and Booklet: Divide the tasks related to the preparation of the presentation and booklet among the group members. Plan the structure of these materials logically and interestingly.

3. Development of Materials: Create the presentation and booklet, ensuring that important concepts are addressed and explained clearly and interestingly. Use graphs, images, videos, practical examples, etc. to make the content more attractive.

4. Review and Improvement: Review all produced material, ensuring the correctness and consistency of information, as well as the visual and pedagogical quality of the materials.

5. Presentation: Prepare to present the work to the class. All group members should actively participate in the presentation.

6. Writing the Report: Write the project report, explaining the theory, the methodology used, the task division, the challenges encountered, and the conclusions of the work.

7. Material Submission: Submit the presentation, the booklet, and the report to the teacher on the agreed date.

Project Delivery and Writing of the Written Document

At the end of the project, the groups must deliver the digital presentation and educational booklet, as well as the written report of the work. The report should follow the structure of Introduction, Development, Conclusions, and Bibliography used.

• The Introduction should contextualize the theme, its relevance and application in the real world, as well as the objective of this project.

• In the Development, students must explain the theory behind the central themes of the project, explain the activity in detail, indicate the methodology used, and finally present and discuss the results obtained.

• In the Conclusion, students must review their main points, explaining the learnings obtained and the conclusions drawn from the project.

• Finally, in the Bibliography, students must indicate the sources they relied on to work on the project, such as books, web pages, videos, etc.

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