We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.
Physics

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

What Is Terrestrial Radiation?

Mary McMahon
By
Updated: May 21, 2024
Views: 11,389
Share

Terrestrial radiation is electromagnetic energy that originates in the Earth or its atmosphere. It creates background radiation that is always present, though it may fluctuate on the basis of location. This is not dangerous; some of it occurs at wavelengths that do not pose a threat to human health, while in other cases the amount present is so low that it does not pose a threat to human health. Instruments that measure radiation can differentiate between different sources and may return values for terrestrial radiation separated out from other sources for the benefit of researchers.

Numerous radioactive elements are present in rocks, air, and water, including radon, uranium, and thorium. They continually undergo radioactive decay and break down into smaller elements. All of these processes produce terrestrial radiation. In addition, thermal radiation is a part of the energy emitted by the Earth. The sun heats rocks and soil, which release trapped heat during the evening hours, and various geologic and molecular activities also produce heat.

Researchers who study radiation must establish a baseline of background radiation that is always present in order to identify new sources and understand their impact. Terrestrial radiation can depend on location and values, for many places on Earth are available to help scientists calculate baseline levels. With these levels in hand, scientists can see how activities like nuclear power generation impact radiation levels to determine their impact on human, plant, and animal life. This information can be important for setting science policy and developing safeguards to prevent radiation damage.

The level of terrestrial radiation has not always been constant. Levels fluctuated throughout the history of the Earth in response to a variety of factors. When the Earth was new, it had more radioactive elements present, but these broke down over time and no external sources replaced them. Researchers can determine historic terrestrial radiation levels with a variety of tools, including measuring existing levels and extrapolating, given information about the behavior of radioactive elements.

Some confusion can surround the concept of background radiation. The public associates radiation with harmful elements, when in fact there are many different forms of radiation and not all of them pose a threat to human health. When someone turns up a thermostat to warm up a room, for example, that person is relying on thermal radiation to increase the temperature. This radiation is not harmful, unless it reaches very high temperatures that the thermostat is usually designed to prevent.

Share
All The Science is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Mary McMahon
By Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a All The Science researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Discussion Comments
Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a...

Learn more
Share
https://www.allthescience.org/what-is-terrestrial-radiation.htm
Copy this link
All The Science, in your inbox

Our latest articles, guides, and more, delivered daily.

All The Science, in your inbox

Our latest articles, guides, and more, delivered daily.