EM Radiation by Ashlynn Hall https://padlet.com/hallas/t6adv9t50jfw en-us 2018-10-09 05:49:24 UTC 2018-10-09 16:53:42 UTC hello@padlet.com Instructions hallas https://padlet.com/hallas/t6adv9t50jfw/wish/290568134 As a group create a post answering all your group's assigned questions. Please credit your sources, simply by providing the links. As well feel free to add picture/videos to aid student understanding. Make sure everything in your post is relevant to the content. ]]> 2018-10-09 05:53:05 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290568134 Group 12: Microwaves https://padlet.com/hallas/t6adv9t50jfw/wish/290853317 What are microwaves?
- Waves with frequencies ranging from 1 GHz up to about 300 GHz. The wavelengths vary from 12 inches to .04 inches.

Two Examples of Using Microwaves
- Used in radar/communication and heating up food in a microwave oven.

Potential Health Risks
- Temperature sensitive  tissues like the eyes and organs with a poor blood supply can be damaged from long exposure

https://www.livescience.com/50259-microwaves.html
http://www.who.int/peh-emf/publications/facts/info_microwaves/en/]]> 2018-10-09 16:25:29 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290853317 Group 1: Gamma Rays https://padlet.com/hallas/t6adv9t50jfw/wish/290853321 What are gamma rays?
penetrating electromagnetic radiation of a kind arising from the radioactive decay of atomic nuclei. Gamma rays have the smallest wavelengths and the most energy of any wave in the electromagnetic spectrum. They are produced by the hottest and most energetic objects in the universe, such as neutron stars and pulsars, supernova explosions, and regions around black holes. On Earth, gamma waves are generated by nuclear explosions, lightning, and the less dramatic activity of radioactive decay. https://science.nasa.gov/ems/12_gammarays
Provide at least two examples of gamma rays in everyday life.
  • a treatment for cancer
  • used to look for cracks in pipes in aircraft parts
  • used for x-rays
  • Breaks DNA Molecules
https://physics.tutorvista.com/waves/gamma-rays.html
Explain the potential health risks.
Skin cancer
Genetic Damage
Acute tissue damage

The ICRP says "In the low dose range, below about 100 mSv, it is scientifically plausible to assume that the incidence of cancer or heritable effects will rise in direct proportion to an increase in the equivalent dose in the relevant organs and tissues" ICRP publication 103 paragraph 64

Rothkamm, K; Löbrich, M (2003). "Evidence for a lack of DNA double-strand break repair in human cells exposed to very low x-ray doses". Proceedings of the National Academy of Sciences of the United States of America. 100 (9): 5057–62. 


]]> 2018-10-09 16:25:29 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290853321 Group 6 https://padlet.com/hallas/t6adv9t50jfw/wish/290854006 What are X-Rays?
An electromagnetic wave of high energy and very short wavelength, which is able to pass through many materials opaque to light.
Source - https://www.google.com/search?rlz=1CAACAG_enUS818US818&ei=uNm8W5S9FIae8APO5ZzAAg&q=x-rays+definition&oq=x-rays+d&gs_l=psy-ab.1.0.0l10.3978.4214..5599...0.0..0.79.143.2......0....1..gws-wiz.......0i71j0i67.V3F5TjVhwmM&surl=1&safe=active&ssui=on

Two Examples of X-rays in everyday life -
Doctors use X-rays for looking at broken bones, and dentists use them to see your teeth/roots.

Risks of X-Rays -
Risks include potential radiation exposure, which could lead to cancer.
]]> 2018-10-09 16:26:24 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290854006 group 2: Gamma Rays wursthornj280 https://padlet.com/hallas/t6adv9t50jfw/wish/290854120 1.What are gamma rays?
-penetrating electromagnetic radiation of a kind arising from the radioactive decay of atomic nuclei.

2.Provide at least two examples of gamma rays in everyday life.
-🤬 cancer cells.They are used to sterilize food and 🤬 microbes

3.Explain the potential health risks.
 -Acute damage to cell tissue and cancer

source:http://www.darvill.clara.net/emag/emaggamma.htm


]]> 2018-10-09 16:26:32 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290854120 Group 3: Gamma Rays https://padlet.com/hallas/t6adv9t50jfw/wish/290856210 2018-10-09 16:29:41 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290856210 Group 5 casebierj381 https://padlet.com/hallas/t6adv9t50jfw/wish/290857023 What are X-rays?
X-rays are a type of electromagnetic radiation, most known for the ability to see through a persons skin for medical purposes, revealing the bone beneath the skin.
https://www.livescience.com/32344-what-are-x-rays.html
X-rays in daily life:

Potential Health Risks:



]]> 2018-10-09 16:30:54 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290857023 Gamma Rays, yo williamsonz654 https://padlet.com/hallas/t6adv9t50jfw/wish/290857282 Gamma rays are at the end of the EM, because they are have the most energy and vibrate at the fastest frequency. They can be used to treat cancer and create nukes; average, everyday stuff. They can be harmful due to the fact that the can 🤬 skin cells, and some types of gamma rays can penetrate the skin.]]> 2018-10-09 16:31:18 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290857282 Group 9: UV Rays AmberDeLeon https://padlet.com/hallas/t6adv9t50jfw/wish/290857662 1.What are UV rays?
UV rays have a higher frequency than visible light on the light spectrum, which is why they require precaution and protection (sunscreen, sunglasses, etc). They have a  frequency of about 8 × 1014 to 3 × 1016 cycles per second. Because these are rays and not waves, they do not require a medium. 

2.Provide at least two examples of UV Rays in everyday life.
UV rays are used in everyday life in hospitals. Hospitals use UV lamps to sterilise surgical equipment. People also use suitable doses of ultraviolet rays to produce vitamin D. We use sunscreen to protect our skin from the exposure to these rays. 

3.Explain the potential health risks. 
The potential health risks of UV rays include skin-cancer, premature aging, and eye damage. This is caused because the overexposure of the rays has a harmful suppressing effect on the immune system. 

]]> 2018-10-09 16:32:01 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290857662 Haley Hernandez, group 11, microwaves linm562 https://padlet.com/hallas/t6adv9t50jfw/wish/290858390 1.a microwave is an electromagnetic wave with a wavelength.Microwaves are used in radar, in communications, and for heating in microwave ovens and in various industrial processes. For example, it’s used for heating up food.
Source:  https://www.google.com/search?q=what+are+microwaves&rlz=1CAACAG_enUS818&oq=what+are+microwa&aqs=chrome.1.69i57j0l5.4714j0j7&sourceid=chrome&ie=UTF-8&surl=1&safe=active&ssui=on
2. health risks:
  • Microwaves break chemical and molecular bonds, and can rip atoms apart, disrupting the basic biochemical structures of life. This makes the foods cooked in microwaves dangerous to consume. 
  • Eyes are especially vulnerable to microwaves. That’s because unlike other areas of the body, they lack the blood vessels to dissipate the heat and cellular stress.

Source:

https://www.safespaceprotection.com/news-and-info/microwave-oven-dangers/
3. two examples of microwaves in everyday life:
- In a mobile phone, they're made by a transmitter chip and an antenna, in a microwave oven they're made by a "magnetron".
-they channel heat energy directly to the molecules (tiny particles) inside food. 
- Stars also give off microwaves
- Wifi uses microwaves 
source: http://www.darvill.clara.net/emag/emagmicro.htm


]]> 2018-10-09 16:33:07 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290858390 Group 7 UV rays duffusk043 https://padlet.com/hallas/t6adv9t50jfw/wish/290858973 What are UV rays?
Ultraviolet is electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays.UV radiation is present in sunlight constituting about 10% of the total light output of the Sun.
https://en.wikipedia.org/wiki/Ultraviolet
2. Examples of UV rays in everyday life?
An obvious example of UV rays in everyday life is the sun.
Another example is that UV lamps are used to sterilize medical equipment.
http://www.darvill.clara.net/emag/emaguv.htm


3. Potential health risks
A potential health risk of UV rays is skin cancer. Unprotected exposure to UV radiation is the most preventable risk factor for skin cancer. Another potential health risk is eye damage or cataracts.
https://www.epa.gov/sunsafety/health-effects-uv-radiation



]]> 2018-10-09 16:34:00 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290858973 Group 4: X-Rays birchj501 https://padlet.com/hallas/t6adv9t50jfw/wish/290859511 1. What are X-rays?
an electromagnetic wave of high energy and very short wavelength, which is able to pass through many materials opaque to light.

2. Provide at least two examples of X-rays in everyday life.

To get images of bones another use is to fight cancer cells and shrink tumors

3. Explain the potential health risks 

X-rays cause a small amount of radiation, which in excess, can cause cell mutation and lead to the development of cancerous cells.
https://www.youtube.com/watch?v=hTz_rGP4v9Y

]]> 2018-10-09 16:34:53 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290859511 Gamma Ways williamsonz654 https://padlet.com/hallas/t6adv9t50jfw/wish/290859755 Gamma ways awe at the end of the ectwomagnetic spectwum, because they have the most enewgy and vibwate at the fastest fwequency. They can be used to tweat cancew and cweate nukes; avewage, evewyday stuff. They can be hawmfuw due to the fact that the can kiww skin cewws, and some types of gamma ways can penetwate the skin.]]> 2018-10-09 16:35:15 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290859755 Group 10 Microwaves https://padlet.com/hallas/t6adv9t50jfw/wish/290861159
  • What are microwaves?
    • an electromagnetic wave with a wavelength in the range 0.001–0.3 m, shorter than that of a normal radio wave but longer than those of infrared radiation. Microwaves are used in radar, in communications, and for heating in microwave ovens and in various industrial processes.
    • Provide at least two examples of gamma rays in everyday life.
    To give -Rays for people and for RAdiation to 🤬 Malignant Cancer cells
    • Explain the potential health risks. 
    Microwave energy can be absorbed by the body and produce heat in exposed tissues.
    1. What is the effect of frequency of  EM radiation on human health? Write a brief 4-5 sentence summary.
    Prolonged exposure to ultraviolet radiation from the sun can lead to melanoma and other skin problems. Clear evidence establishes ultraviolet radiation, especially the non-ionizing medium wave UVB, as the cause of most non-melanoma skin cancers, which are the most common forms of cancer in the world.
    1. This is an equation for energy: E = hf. Where energy is equal to Planck's constant (6.63 × 10-34 Js) multiplied by the frequency. Discuss the relationship between the energy and the frequency of electromagnetic radiation in 2 sentences. 
    Electromagnetic radiation obtains its higher or lower frequency from the amount of energy that is being run through it.  The Planck Constant is unaltered in the equation.

    http://www.bbc.co.uk/schools/gcsebitesize/science/add_ocr_gateway/radiation/treatmentrev1.shtml
    http://www.darvill.clara.net/emag/emaggamma.htm
    https://sciencing.com/uses-do-gamma-rays-8286669.html
    http://www.who.int/peh-emf/en/


    ]]>     2018-10-09 16:37:21 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290861159     Group 8 https://padlet.com/hallas/t6adv9t50jfw/wish/290863017
  • What are UV rays?
    • UltraViolet rays are abbreviated as UV rays. It is a form of electromagnetic radiation. There are three different types of UV rays: UVA rays, UVB rays, and UVC rays. 
    • Provide at least two examples of UV Rays in everyday life.
    Hospitals use UV lamps to sterilise equipment. Food and drug companies also use UV lamps to sterilise products.

    • Explain the potential health risks.
    UV rays emit electromagnetic radiation  making the skin dry, scaly, and rough. In the long term, it causes an early skin aging, wrinkles, loss of skin, and dark patches. UV Rays can damage skin cells and age 

    Sources: https://www.cancer.org/cancer/skin-cancer/prevention-and-early-detection/what-is-uv-radiation.html
    http://www.darvill.clara.net/emag/emaguv.htm


    ]]>     2018-10-09 16:40:05 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290863017     https://padlet.com/hallas/t6adv9t50jfw/wish/290866720 2018-10-09 16:45:20 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290866720 https://padlet.com/hallas/t6adv9t50jfw/wish/290872454 2018-10-09 16:53:42 UTC https://padlet.com/hallas/t6adv9t50jfw/wish/290872454