LISTA QUÍMICA

RADIOACTIVIDAD EN LA NATURALEZA

Made by:

Pablo DoñaLuca CameroniCarlos MartinezBenigno Bermejo3ºESO F

Next

Introduction

Effects of Radioactivity on Living organisms

Natural Radioactivity

Differences Between Natural and Artificial Radioactivity

Cosmic Radioactivity

Conclusions and references

INDEX

INTRODUCTION

Radioactivity is a physical phenomenon involving the decay of unstable nucleus, releasing energy and particles in the form of radiation. This has significant implications for nature and for the human health. This project explores the effects of differents forms of natural radioactivity and the differences between natural or artificial radioactivity and cosmic radioactivity.

FIRST PAGE

2. Effects of Radioactivity on Living Beings Radioactivity can adversely affect living organisms. Prolonged exposure to ionizing radiation can damage cells, increasing the risk of diseases like cancer. For

2. Effects of Radioactivity on Living organisms

Radiation can affect living things in different ways, depending on the type, distance and duration of exposure.Here are some of the effects:

Next

EFFECTS

Example 1

Ionising radition: This type of radiation (such as X-rays or gamma radiation) can ionise atoms in cells, which can damage DNA. This can lead to mutations, cancer and, in high doses, acute illnesses such as radiation syndrome.

Next

EFFECTS

Example 2

Effects on the immune system: Radiation can weaken the immune system, making organisms more vulnerable to infection and disease (exposure to ionizing radiation causes a decrease in white blood cells).

Next

EFFECTS

Example 3

Injuries: radioactivity causes damage directly to tissues, for example, skin lesions or blindness

Next

EFFECTS

Example 4

Impact on reproduction: Can affect fertility and embryonic development, causing birth defects.

FIRTS PAGE

3. Natural Radioactivity

Natural radioactivity comes from radioactive materials in the Earth's crust, including uranium, thorium and potassium-40. These materials decay slowly, releasing radiation.

Next

3. Natural Radioactivity

Measurement of natural radioactivity is done using detectors, with acceptable levels varying by location.

FIRST PAGE

4. Differences Between Natural and Artificial Radioactivity

Natural radioactivity arises from elements found in nature (for emxample; K-40, C-14, U-235...), while artificial radioactivity is created by human activities, such as nuclear reactors; for example: I-131, Tc-99, Ir-192.

Next

4. Differences Between Natural and Artificial Radioactivity

Another difference is that artificial radioactivity is usually more intense and localized compared to natural radioactivity, which is more redistributed in nature.

FIRST PAGE

5. Cosmic Radioactivity

Cosmic radioactivity comes from space, mainly from solar radiation and other galactic radiation that interact with the Earth. The atmosphere protects us from these rays but exposure increases with altitude.

Next

5. Cosmic Radioactivity

The cosmic radiation that reaches us doesn´t cause any injury. It´s similar than other low levels of radiation which we are regularly exposed. On average, people are exposed to about 3.5 millisieverts of radiation per year. The main consequence of these rays is that they react with a small portion of the gases in the air and transform them into radioactive material (such as tritium and carbon-14).

FIRST PAGE

6. Conclusions

• Understanding the phenomenon of radiactivity and its effects on living beings and the environment is very important to minimize risks and guarantee our safety.

• In this project we have exposed the differences between sources of natural radiactivity (produced by radioactive elements present on the planet and cosmic radiation) and artificial radiactivity (produced by elements synthesized by humans) and the effects of radioactivity on living beings.

Next

7. References

-Consejo de seguridad nuclear. Curso General de Formación de Actuantes en Emergencias Nucleares.Módulo 0. Conceptos Básicos sobre Protección Radiológica Tema 0.1 Efectos de la radiactividad y protección contra la radiación.-Agencia internacional de la energía atómica. https://www.iaea.org/-Organización mundial de la Salud (OMS).https://www.who.int/es/news-room/fact-sheets/detail/ionizing-radiation-and-health-effects-Libro de texto: Física y Química 3º ESO. Anaya.-Google schoolar

Next

Thank you so much for your attention!

Start again