ultra violet light and radiation - nwaccfaculty.nwacc.edu/east_original/fall 2009/physics and human...
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Ultra Violet Light and Radiation
Physics and Human Affairs: Melody Thomas
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Beau SmithAdam SamuelsLyndun PeoplesKathryn Gilker
East/EMPACTS Group
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Introduction
80% of our lifetime sun damage occurs by the age of 18. School age children may be at risk to sun damage via exposure to Ultra Violet Light. Education about Ultra Violet Light can lead to an empowerment of understanding about sun safety for school age children, parents, teachers, and administrators.
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The Sun
Helps Plants Grow
Makes Vitamin _
Keeps Us Warm
Makes Us F__l Good
G_v_s Us Light
Kills Ge_m_
Helpful Harmful
Makes Vitamin D
Kills Germs
Makes Us Feel Good
Gives Us Light
Project Overview
Access valid andReliable informationOn the facts of UltraViolet light and the policiesRegarding sun safety withinPublic schools.
Develop and promoteOur findings toAdministrative andCommunitycollaborators
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Project Objectives
The goal of this EAST project was to learn thePhysics of Ultra Violet Light while adapting theMaterial into an educational tool.
Collaborate with Community to help distributeInformation.
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Community
Makes Our Skin Wrinkle
Causes Sunburns
Causes Skin Cancer
Causes Eye Damage
Helps Plants Grow
Keeps Us Warm
Makes Vitamin D
Kills Germs
Makes Us Feel Good
Gives Us Light
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Community
The service provided to the community will be the delivery of health related messages that can promote healthy decision making
In working with the community our group
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Contacted Head Nurse of the Rogers School DistrictAnd acquired policies on sun safety related issue.
Met with contact at Rogers School District headOffices and inquired about need for sun safetyWithin school district.
Visited Rogers Activity Center to promote theDistribution of materials about sun safety.
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Identify problems and issues
Research and analyze the process of developing a solution
Effectively produce and present an outcome that resolves problem or issue
Curriculum
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Curriculum
In learning about Ultra Violet LightAnd effects our group learned
Organization-time management Networking in community Team Skills Communication Academic skills
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Used website to help distribute information to schoolsUsed website to distribute information to parents
Project Implementation
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What is Ultra Violet Light
An invisible form of energy that travels through air and objects.
Electromagnetic radiation with a wavelength shorter than that of visible light.
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3 Types of UV rays
UVA- penetrates into skin and contributes to skin aging and wrinkling
UVB- most dangerous causing sun burs and skin cancer
UVC- Lethal, but absorbed by ozone layer and does not reach earth
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Melanin
1st defense against the sun
Different concentrations and colors, resulting in different skin colors
The lighter the skin the less melanin it has to absorb the UV light
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Fascinating facts bout Ultra Violet Light
Human eye cannot see UV light, but some insects can
Things invisible to human eye can become visible under UV light
Produces Vitamin D in skin
New snow can reflect up to 80% of UV light, and bodies of water reflect less than 10%
Humidity increases the effects of UV light
UV levels at equator are over 1,000 times higher than that at the polar regions
UV light produced mainly by hot, young massive stars 15
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Negative Facts about UV light
UV light can cause skin cancer which is the most common cancer in the United States
Effective sun protection is practiced by less than one-third of the U.S. youth
Exposure to UV rays are strongest between 11 am and 1 pm= lunch recess
Can damage eyes-clouding of cornea-snow blindness
Destroy Vitamin A in skin
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Positive Facts about UV light
Can disinfect air, surfaces, and water
Can destroy virus, molds, and bacteria
Can be used to pasteurize fruit juices
Can eliminate various small flying insects
Can sterilize medical equipment
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Where UV Light falls in
theElectromagnetic
Spectrum
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UV INDEX SCALE
We use the UV Index Scale.
Reported on a scale of 1 -11+.
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2
3
4
5
6
7
8
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11+
UVindex
Take special care when the UV Index is 5-6 or higher.
Schools can check
This in their
Computer labs!
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What Can be Done?
Ask youth what they know about the sun and how it can affect their health
Take part in an agency ran sun safety program
Inform parents/guardians about clothing policies at schools
Schools do not have the budget for sunscreen, so inform children about proper usage and supply them
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What Can be Done
Wear Hats
Most schools give children the options to wear protective clothing and hats during time spent outside
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What Can be Done
Sunglasses
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Division of Labor
• Worked on website & gathered facts about UV rays.
• Worked on website & found pictures for power point.
• Worked on website, power point & met with Rogers school nurse.
• Worked on website & works cited.
Kathryn Adam
LyndunBeau
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Resources Physics: Concepts and Connections; 4th
edition, Art Hobson
www.epa.gov/sunwise/
www.pbs.org/teachers/
www.suite101.com/
www.sunsafetyalliance.org/
www.articopia.com
www.sunsafetyforkids.org/
www.americanairandwater.com/
www.skincancer.org/
www.Nasascience.hq.nasa.gov
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Acknowledgements
Our thanks to..
Barbara Rademacher, EAST/EMPACTS Facilitator – website help
C.D. Phillips, EAST/EMPACTS
Facilitator – EAST Lab website
Melody Thomas, Instructor
NWACC library personnel
Rogers Public School system
all the web researchers who have provided so much information we needed to complete our project.
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Be safe in the sun