The Electro Magnetic Spectrum
Light is a form of electromagnetic energy.
There are some types of electromagnetic energy that we can see, and others that we cannot.
The electromagnetic spectrum includes all types of energy from very low energy to very high energy.
Low energy waves have a very long wave length and a lower frequency while high energy waves have a very short wave length and a very high frequency.
Electromagnetic spectrum. (2013). [Image. Creative Commons]. Retrieved from here
Web page with information about the electromagnetic spectrum here
Research using the internet, books or other tools to answer the questions below.
You may work on a word document, but when done, you are to save your work on a USB so that it can be added to this webpage. Leave your roll call initials at the end of your work. Present your USB so as to load work on the webpage.
When working through this task think of:
Digital citizenship: Always acknowledge the work of others in your research. Look below the rubric for examples of how to refrence.
Cyber safety: Do not leave any personal information about yourself on the internet. Use your roll call initials.
Use your creativity and preferred learning style to answer the questions. As long as you answer the questions, you can use any mode- written, visual, audio, art, drawing, graphics, tables and diagrams. Add any extra information, images, diagrams and links to other web pages on the topic.
Please refer to the rubric at the end of the questions so that you can self assess your work.
- What is the electromagnetic spectrum?
- List the following types of electromagnetic energy from the least energetic to most energetic: Ultraviolet light, X rays, Radio and television waves, gamma rays,infrared radiation, visible light, microwaves.
- Which colour in the visible light spectrum has the least energy?
- Which colour in the visible light spectrum has the most energy?
- Which types of waves carry mobile phone signals?
- Give a use for each of the waves listed in question two.
- What is the approximate wavelength of each of the types of waves listed in question 2?
- Are any types of the electromagnetic energy dangerous? Explain your answer.
- At what speed do electromagnetic waves travel?
- Which types of electromagnetic energy are visible to the eye?
|ICT skills||Successfully loads work on USB. Presents USB to be loaded on webpage(3 marks)Uses three or more graphics, images or multi media modes to enhance presentation(3 marks)||Successfully loads work on USB(2marks)Uses two-multimedia mode to enhance presentation(2 mark)||Difficulty loading work on USB required assistance(1 mark)Uses one multimedia mode to enhance presentation(1 mark)||Presentation not loaded and no efforts made to enhance it(0 marks)|
|Understands the electromagnetic spectrum||Answers all the questions correctly(10 marks)||Answers most of the questions accurately(8 to 9 marks)||Answers some of the questions accurately(5 to 7 marks)||Few to none of the questions answered are correct.(0 to 4 marks)|
|Uses referencing and shows awareness of cyber safety||All references accurately provided (3 marks)Initials at end product, no personal information provided.(1 mark)||All references provided but some not accurate (2 marks)||Not all references are provided or referred to correct format (1mark)||No references provided and personal information like name provided.(0 marks)|
This is a sample of how to present references in your bibliography. You Used the same guide for your Nanberry essay.
|One Author||Tradey, L. 1992, Rave Readers, Longman Cheshire, Melbourne.|
|Two Authors||Taylor, M. & Murphy, F. 1999, Medicine Talk, Macmillan Education, South Melbourne.|
|More than Two Authors||Marchetti, E., Ward, S.A. & Lacey, C. J. 1986, A Guide to Surviving School, Holt, Rinehart and Winston Inc., New York.|
|Editor||Healey, K. (ed). 1995, Information Superhighway, Spinney Press, Sydney.|
|DVDs||Campbell, Luke (producer) 2002, Space, [DVD], BBC Production, London|
|Internet||Carter, J. 1999, Contemporary English Study, National Library of Australia [online], http://www.nla.gov.au (accessed 21 February, 2006).|
Presentation of your bibliography
When you type out your bibliography it should be in alphabetical order based on the author’s surname. For example:
Campbell, Luke (producer) 2002, Space, [DVD], BBC Production, London
Carter, J. 1999, Contemporary English Study, National Library of Australia [online], http://www.nla.gov.au (accessed 21 February, 2006).
Healey, K. (ed). 1995, Information Superhighway, Spinney Press, Sydney.
Marchetti, E., Ward, S.A. & Lacey, C. J. 1986, A Guide to Surviving School, Holt, Rinehart and Winston Inc., New York.
Taylor, M. & Murphy, F. 1999, Medicine Talk, Macmillan Education, South Melbourne.
Tradey, L. 1992, Rave Readers, Longman Cheshire, Melbourne.
The title of the text should be italicised and there should be a space between each new reference.
The bibliography is placed at the end of your essay on a new page.
By CS24 and BC4
1-What is the electromagnetic spectrum?
It is a range of all types of EM radiation
2- List the following types of electromagnetic energy from the least energetic to most energetic: Ultraviolet, X-rays, Radio, TV waves, Gamma rays, Infrared radiation, Visible light and Microwaves.
Radio and TV
3- Which colour in the visible light spectrum has the least energy?
The red colour in the visible light spectrum has the least energy
4- Which colour in the visible light spectrum has the most energy?
The violet colour in the visible light spectrum has the most energy
5- Which types of waves carry mobile phone signals?
Low energy or low wave lengths carry mobile phone signals (see the radio section on the spectrum above).
6- Give a use for each of the waves listed in question two.
Gamma ray: PET scan
X-ray- Airport security scanner
Ultraviolet- UV from the sun
Visible light: Stars
Infrared: Night vision goggles
Microwave: Microwave oven
Radio: AM Radio
7- What is the approximate wavelength of each types of waves listed in question two?
Gamma ray: High
Visible: High/Low (in the middle of high and low but mostly high)
8- Are there any types of electromagnetic energy that are dangerous? Explain your answers.
UV From the sun
Because all of these have high wavelengths. This means that they are not visible to the naked eye.
9- At what speed do electromagnetic waves travel?
3.00 x 10 to the power of 8 meters per second (M/S)
10- Which types of electromagnetic energy are visible to he human eye?
Smale, Alan (director) 2013, Spectrums, [website]
Gibb, Meredith (author) 2013, Spectrums, [website]
Hewitt, Paul (author) 2012, Spectrums, [website]
1. What is the electromagnetic spectrum?
The Electromagnetic Spectrum is the series of all sorts of Electromagnetic Radiation.
2. List the following types of electromagnetic energy from least energetic to most energetic: ultraviolet light, X rays, radio & television waves, gamma rays, infrared radiation, visible light, microwaves.
1. Radio & Television Waves 5. Ultraviolet Light
2. Microwave 6. X rays
3. Infrared Radiation 7. Gamma rays
4. Visible Light
Aircraft Communication (Radio Waves)
3. Which color in the visible light spectrum has the least energy?
The lowest frequency of visible light is red; Red has the lowest frequency, the longest wavelength.
4. Which color in the visible light spectrum has the most energy?
The highest frequency of visible light is violet; Violet has the highest frequency, the shortest wavelength.
5. Which types of waves carry mobile phone signals?
Radio waves carry mobile phone signals.
6. Give a use for each of the waves listed in question 2.
- X rays are used to check if a bone is broken or fractured.
- Radio & Television Waves are used to broadcast television programs and radio stations (mainly used for entertainment).
- Gamma rays are used to kill cancerous cells. Also they are used to have a better view sometimes on people’s organs. They are part of the electromagnetic spectrum. Also, it is placed highest in the spectrum for frequency.
- Infrared Radiation is used in your TV remote to change channels on your TV some animals also see in infrared.
- Visible Light; Human beings use visible light for seeing; green plants use it for photosynthesis. It can also be used to generate electricity, by means of photo-electric cells.
- Ultraviolet Light can be used to kill microbes. Hospitals use UV lamps to sterilize surgical equipment and the air in operating theatres. Food and drug companies also use UV lamps to sterilize their products.
- Microwaves are used for radar like the Doppler radar used in weather forecasts & is also used in Microwave Ovens to cook/heat food.
Doppler Radar (Microwaves)
7. What is the approximate wavelength of each of the types of waves listed in question 2?
- UV Light – Approx. wavelength 1 x 10-8 – 4 x 10-7
- X Rays – Approx. wavelength 1 x 10-11 – 1 x 10-8
- Radio & Television – Approx. wavelength > 1 x 10-1
- Gamma Rays – Approx. wavelength < 1 x 10-11
- Infrared Radiation – Approx. wavelength 7 x 10-7 – 1 x 10-3
- Visible Light – Approx. wavelength 390 to 700 nanometers
- Microwaves – Approx. wavelength 1 x 10-3 – 1 x 10-1
8. Are any types of the electromagnetic energy dangerous? Explain your answer
Gamma Rays, Microwaves And X Rays can be very dangerous if used in a large dose or used to much all of these electromagnetic energies are absorbed by the body but the body can’t get rid of them if you get to much your cells mutate causing cancer. UV Light is dangerous if you were to look into the sun for too long you would go blind UV Light can also cause cancer if you were to sit out in the sun attempting to get a tan this could develop into a melanoma (a form of cancer).
9. At what speed do electromagnetic waves travel?
Supposedly at the speed of light in a vacuum. But they travel a bit slower in the atmosphere. The more matter gets in the way, the slower they move. So an exact speed is impossible to estimate in the atmosphere. The speed of light is about 186,000 miles per second or 300,000,000 meters per second.
10. Which Types of electromagnetic energy are visible to the eye?
White light is visible, and it contains all the colors of the rainbow, from red to violet.
Air To Ground Com. (2013). [Image. Creative Commons].
http://www.evolvsys.cz/skin/images/projects/estec_iris.jpg (28 May. 2013)
Darvill . C. (2013). Uses of UV light.
http://www.darvill.clara.net/emag/emaguv.htm (27 May. 2013)
Doppler Radar. (2013). [Image. Creative Commons].
(28 May. 2013)
Electromagnetic Spectrum. (2013). [Image. Creative Commons].
Fish247. (2008). What are gamma rays used for. http://wiki.answers.com/Q/What_are_gamma_rays_used_for (27 May. 2013)
Kenialoveme. (2012). What is visible light used for.
http://wiki.answers.com/Q/What_is_visible_light_used_for (27 May. 2013)
Nasa. (2013). Electromagnetic Spectrum.
http://cmb.physics.wisc.edu/tutorial/spectrum.html (27 May. 2013)
Nasa. (2013).Electromagnetic spectrum.
Nasa. (2013). Regions of the electromagnetic spectrum.
Time Will Tell. (2008). At what speed does electromagnetic waves travel.
- Electromagnetic spectrum is the series of all categories of electromagnetic radiation.
- Radio & TV, Microwave, Infrared Radiation, Visible Light, Ultraviolet light, X-rays & Gamma Rays.
- Violet is the colour that contains less energy.
The Electromagnetic Spectrum. (2009). Retrieved from HERE.
- Red, out of all visible light colours, holds the most energy.
- Radio Waves are transmitted so the signals can operate mobile phones.
- Radio- Radio waves work the radio by sending music and news from the radio station.
Microwave- Radiation from the microwave is used to cook food such as popcorn or rice.
Infrared- Heat within objects and our skin provide the infrared light that allows night vision goggles to function.
Visible- Things such as fireflies & light bulbs put forward visible light which is detected by our eyes.
Ultraviolet- The sun carries ultraviolet light meaning that it is the reason that our skin can get burnt or tanned by the sun.
X rays- The X ray has such high waves that gives it the power to allow doctors & dentists to see through to our bones.
Gamma Rays- Gamma Rays can be used to see far inside your body, these can also be used to detect things.
- This table shows these electromagnetic energy’s wavelengths
|Radio||> 1 x 10-1||< 3 x 109||< 2 x 10-24|
|Microwave||1 x 10-3 – 1 x 10-1||3 x 109 – 3 x 1011||2 x 10-24– 2 x 10-22|
|Infrared||7 x 10-7 – 1 x 10-3||3 x 1011 – 4 x 1014||2 x 10-22 – 3 x 10-19|
|Optical||4 x 10-7 – 7 x 10-7||4 x 1014 – 7.5 x 1014||3 x 10-19 – 5 x 10-19|
|UV||1 x 10-8 – 4 x 10-7||7.5 x 1014 – 3 x 1016||5 x 10-19 – 2 x 10-17|
|X-ray||1 x 10-11 – 1 x 10-8||3 x 1016 – 3 x 1019||2 x 10-17 – 2 x 10-14|
|Gamma-ray||< 1 x 10-11||> 3 x 1019||> 2 x 10-14|
Regions of the Electromagnetic Spectrum. (2013). Retrieved from “NASA’s Imagine the Universe” home page.
- Yes, this includes the microwave, ultraviolet, x rays & gamma rays. This is because microwave can cook unnoticed, the sun (ultraviolet) can burn you and cause skin problems, X rays can cause radiation sickness and gamma rays can also cause radiation sickness.
- Electromagnetic waves travel at about the speed of light.
- Visible light is the only energy out of 7 that is able to be seen in the naked human eye.
Comparison of wavelength, frequency and energy for the electromagnetic spectrum. (2013). Retrieved from HERE.
Each colour in a rainbow corresponds to a different wavelength of electromagnetic spectrum. (2013). Retrieved from HERE.
Dr. Barbara, M. (project leader) & Meredith G. (Curator) 1997-2013, Imagine the Universe [online], http://imagine.gsfc.nasa.gov/index.html, Goddard Space Flight Centre, Maryland.
John, S. & Mike, R. 2009, Electromagnetic Radiation, Matter and Energy, Go Science Seven, http://www.goscienceseven.com/ecosystems/UVarticles/UV1article.html
1999, Electromagnetic waves, http://physics.bu.edu/~duffy/py106/EMWaves.html, Boston University Physics, Boston U.S.
What is the electromagnetic spectrum
OT27 and SB
The electromagnetic (EM) spectrum is the range of all types of EM radiation. Radiation is energy that travels and spreads out as it goes – the visible light that comes from a lamp in your house and the radio waves that come from a radio station are two types of electromagnetic radiation. The other types of EM radiation that make up the electromagnetic spectrum are microwaves, infrared light, ultraviolet light, X-rays and gamma-rays.
2. The electromagnetic spectrum are listed from the least energetic to the most energetic.
Gamma rays – X-ray – Ultraviolet – Visible – Infrared – Microwave – Radio
3. The colour red in the visible light spectrum has the least energy.
4. The colour violet in the visible light spectrum has the least energy.
5. The radio wave carries mobile phone signals. So we can call and send text messages.
6. Uses of the different waves of the electromagnetic spectrum
Gamma ray – Pet scan, Terrestrial gamma-ray flashes
X-ray – Airport security scanners
Ultraviolet – UV light from the sun
Visible – Fireflies, lightbulbs, stars
Infrared – Night vision goggles, TV remote controls
Microwave – Microwave oven
Radio – AM radio, Amateur radio, Aircraft communication
7. A diagram for the approximate wavelengths of each of the types of waves.
|Radio||> 1 x 10-1|
|Microwave||1 x 10-3 – 1 x 10-1|
|Infrared||7 x 10-7 – 1 x 10-3|
|Visible||4 x 10-7 – 7 x 10-7|
|Ultraviolet||1 x 10-8 – 4 x 10-7|
|X-ray||1 x 10-11 – 1 x 10-8|
|Gamma rays||< 1 x 10-11|
The wavelengths of ultraviolet, X-ray, and gamma-ray regions of the EM spectrum are very small. Instead of using wavelengths, astronomers that study these portions of the EM spectrum usually refer to these photons by their energies, measured in electron volts (eV). Ultraviolet radiation falls in the range from a few electron volts to about 100 eV. X-ray photons have energies in the range 100 eV to 100,000 eV (or 100 keV). Gamma-rays then are all the photons with energies greater than 100 keV.
8. Some of these electromagnetic energy are dangerous.
Microwave – High densities of microwave radiation (such as what is found in masers, or “microwave lasers”) are known to cause health problems such as burns, cataracts, nervous-system damage, and sterility.
Gamma ray – They are the most penetrating of all electromagnetic radiation. They are often produced as a result of gamma decay of radioactive elements; this is the most dangerous and the most penetrating of all radioactive decay.
9. The speed that electromagnetic waves travels.
Electromagnetic waves travels at the speed of 299,792,458 m/s (186,212 miles/second). This is the speed of light.
10. Electromagnetic energy that is visible to the eye.
The visible light is a type of electromagnetic energy that is visible to the eye. It is a electromagnetic radiation at wavelengths which human eyes can see. We perceive this radiation as colours ranging from red (longer wavelengths~700 nanometers) to violet (shorter wavelengths~400 nanometers.)
Dr Barbara, M & Meredith, G. 1997, Imagine the Universe, NASA’s Goddard Space Flight Center [online], http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html (accessed 27th May, 2013).
Dr Barbara, M & Meredith, G. 1997, Imagine the Universe, NASA’s Goddard Space Flight Center [online], http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html (accessed 27th May, 2013)
Dr Barbara, M & Meredith, G. 1997, Imagine the Universe, NASA’s Goddard Space Flight Center [online], http://imagine.gsfc.nasa.gov/docs/science/know_l2/emspectrum.html (accessed 27th May, 2013)
Dr Barbara, M & Meredith, G. 1997, Imagine the Universe, NASA’s Goddard Space Flight Center [online], http://imagine.gsfc.nasa.gov/docs/dictionary.html (accessed 27th May, 2013)
DA 1 ems
TJ 11 H S 20 and L M 15 Electromagnetic Spectrum
D S 25 Electromagnetic
A H 9 Electromagnetic Spectrum
D T 26 The electromagnetic spectrum
E F 7 and M W 30 The Electromagnetic Spectrum EF7 MW30
CP 18 CP18
J D W 29 Electromagnetic Spectrum
TD 6 and F P 17 electromagnetic waves
OT 27 and SB 2 science electromagnetic spectrum
CS 24 and BC 4 bc4 and cs24 on electrospec
J S 21 Electromagnetic
AM 28 abi science