1. EMS/EMR Waves

2. Electromagnetic Wave Simulations of Science!

3. Labels for Wave Models of Science!
Sound Longitudinal Wave
Light Transverse Wave
Electromagnetic 3-D
Transverse Wave
Compression
Crest
Rarefaction
Trough
Wavelength
Frequency
Amplitude

4. #
Wave
Example
Mnemonic
Size
Wavelength
Frequency
NRG 1 2 3 4 5 6 7

5. The Electromagnetic Spectrum & Light

6. _______ _______ _______ _______ _______ _______ _______ _______

8. Electromagnetic Spectrum/Radiation
Electromagnetic waves: are transverse waves produced by the motion of electrically charged particles.
They DO NOT need a medium!
Can travel though empty space at 300,000km/s or 186,000 miles/sec
Radiation: The transfer of energy by electromagnetic waves.
Abbreviations…
EMS = Electromagnetic Spectrum
EMR = Electromagnetic Radiation

9. #
Wave
Example
Mnemonic
Size
Wavelength
Frequency
NRG 1 2 3 4 5 6 7

10. EMS 1 2 3 4 5 6 7 # Wave Mnemonic Size Wavelength Frequency NRG Radio
Microwave 3
Infrared 4
Visible 5
Ultraviolet 6
X-Ray 7
Gamma Ray

11. EMS 1 2 3 4 5 6 7 # Wave Mnemonic Size Wavelength Frequency NRG Radio
Microwave 3
Infrared 4
Visible 5
Ultraviolet 6
X-Ray 7
Gamma Ray

12. Electromagnetic Spectrum#
Wave
Mnemonic
Size
Wavelength
Frequency
NRG 1
Radio
Largest
Longest
Low 2
Microwave 3
Infrared 4
Visible 5
Ultraviolet 6
X-Ray 7
Gamma Ray
Smallest
Shortest
High

13. Electromagnetic Spectrum#
Wave
Mnemonic
Size
Wavelength
Frequency
NRG 1
Radio
Ronald
Really
Largest
Longest
Low 2
Microwave
McDonald 3
Infrared
Invented Is 4
Visible
Very 5
Ultraviolet
Unbelievably
Ultimately 6
X-Ray
X-cellent
X-tra 7
Gamma Ray
Grub!
Great!
Smallest
Shortest
High

14. Mnemonics to Remember Spectrum Order…
From smallest (gamma) to greatest (radio)…
Great, X-Men Uses Very Important Strategy: Running
Greg's X-Ray Unveiled Viral Intestinal Sores Rotting
From greatest (radio) to smallest (gamma) …
Reading Music Is Very Unsatisfactory for Xylophones and Glockenspiels
Really Mrs. neri Is Very, Ultimately, Xtra Great

15. Electromagnetic Spectrum Electromagnetic waves that are classified in ascending order of energy (frequency); they propagate at the speed of light (300,000 km/s).
visible light
Electromagnetic radiation that is perceived by the human eye and ranges from red to violet.
gamma rays
Electromagnetic waves of very high frequency that are emitted by radioactive bodies; they are the most radiant and harmful rays and are used especially in treating cancer.
X-rays
Electromagnetic waves used especially in radiology; frequent exposure can be harmful.
ultraviolet radiation
Electromagnetic waves used especially to tan skin and in microscopy, medicine and lighting (fluorescent tubes).
infrared radiation
Electromagnetic waves emitted by warm objects; their many uses include heating, medicine, aerial photography and weaponry.
microwaves
Short electromagnetic waves; their many applications include radar detection and microwave ovens.
radio waves
Very long electromagnetic waves (about 1 meter) having low frequency; they are used to transmit information (television, radio)

17. Put in your notes above or below your picture…
Long Wavelength Short Wavelength
Low Frequency High Frequency
Low Energy High Energy

18. Radio: Yes, this is the same kind of energy that radio stations emit into the air for your boom box to capture and turn into your favorite Mozart, Madonna, or Justin Timberlake tunes. But radio waves are also emitted by other things ... such as stars and gases in space. You may not be able to dance to what these objects emit, but you can use it to learn what they are made of.
Microwaves: They will cook your popcorn in just a few minutes! Microwaves in space are used by astronomers to learn about the structure of nearby galaxies, and our own Milky Way!
Infrared: Our skin emits infrared light, which is why we can be seen in the dark by someone using night vision goggles. In space, IR light maps the dust between stars.
Visible: Yes, this is the part that our eyes see. Visible radiation is emitted by everything from fireflies to light bulbs to stars ... also by fast-moving particles hitting other particles.
Ultraviolet: We know that the Sun is a source of ultraviolet (or UV) radiation, because it is the UV rays that cause our skin to burn! Stars and other "hot" objects in space emit UV radiation.
X-rays: Your doctor uses them to look at your bones and your dentist to look at your teeth. Hot gases in the Universe also emit X-rays .
Gamma-rays: Radioactive materials (some natural and others made by man in things like nuclear power plants) can emit gamma-rays. Big particle accelerators that scientists use to help them understand what matter is made of can sometimes generate gamma-rays. But the biggest gamma-ray generator of all is the Universe! It makes gamma radiation in all kinds of ways.

20. Radio Waves All around us Long wavelengths and low frequencies.
Radio, TV, cellular phones, cordless phones, etc.

21. Microwaves Radio waves with the highest frequency and energy.
Communications and microwave ovens!

22. Infrared Radiation Slightly lower frequency than visible light.
Felt as heat
Infrared lamps keep your french fries warm!
Used in Remote Controls

23. IR does not penetrate walls and so does not interfere with other devices in adjoining rooms. Infrared is the most common way for remote controls to command appliances.

24. Visible Radiation
Or light, is the only part of the electromagnetic spectrum you can see!
Each different wavelength of light has a different color!!

26. Ultraviolet Radiation
Higher frequency than visible light.
Greater penetrating power!
Helps skin cells produce vitamin D, which is needed for healthy bones and teeth!
Sterilize surgical instruments
Over exposure kills healthy cells!!!
Sagging, dry skin, skin cancer!
Sunblock and sunglasses!!!

27. X Rays
X rays have a shorter wavelength and a higher frequency than ultraviolet radiation.
Higher energy allows X rays to travel through some types of matter such as your skin and muscles.

28. Gamma Rays
Have the highest frequency and are the most penetrating of electromagnetic waves!
They are emitted from the nuclei of radioactive atoms.
Earth receives some from space.
Can be used to kill cancer cells.

29. Mount Moran in Jackson, Wyoming

30. Types of Reflection
Reflected light is when light is not completely absorbed by an object.
The type of surface affects the type of reflection.
Regular/Specular reflection- smooth surface, forms a clear image. (flat mirror)
Diffuse reflection- rough surface, forms a fuzzy image.

31. Ex) Mirror Ex) Road

33. Refraction
The bending of light

34. Rainbows

35. Light Reflection & Refraction
Ex) Mirror
Ex) Road
White
Light
ROYGBIV
Colors of
the Rainbow!

36. Diffraction
Diffraction= Bending and spreading of waves usually around an obstacle

38. Mirrors Convex mirrors- Concave mirrors-
a mirror with a surface that curves outward
Images appear smaller & farther away “objects are closer than they appear”
Concave mirrors-
mirror with a surface curved inward.
Form either virtual images or real images depending on the position of the object

39. They all use lenses to create images!
What do cameras, telescopes, microscopes, and movie projectors have in common?
They all use lenses to create images!

40. Lens
A transparent object (see through) that refracts (bends) light waves such that they converge or diverge to create an image
Lenses are classified by shape
There are 2 types
Convex
Concave

41. Concave Lens Lens is thinner in the middle than at the edges
Does not produce a real image
Produces a Virtual Image
Smaller than objects
Uses Telescopes, Microscopes, and Nearsighted Eyeglasses

42. Convex Lens Lens is thicker in the middle than at the edges
Produces a real image
Light Rays Refract Toward Each Other
A real image is larger than the object
Side Mirror on car “Objects appear smaller than they actually are”
Uses= Magnifying Lenses, Cameras, and Farsighted Eyeglasses

45. Near Sighted Concave Lens (Curves Inward & Thin in Middle)
Can see near but not far because light is focused in front of the Retina
Concave Lens (Curves Inward & Thin in Middle)
Light Diverges or Spreads out back towards the Retina

46. Far Sighted Convex Lens (Curves Outward & Thick in Middle)
Can see far but not near because light is focused behind the Retina
Convex Lens (Curves Outward & Thick in Middle)
Light Converges or Comes Together more in front of Retina

47. Convex vs. Concave
Convex Mirror= Curved Outward Like the Back of a Spoon!
Concave Mirror= Curved Inward Like the Inside of a Spoon!
Convex Lenses = Curve Outward, Thick in the Middle, & used for Farsightedness!
Concave Lenses = Curve Inward, Thin in the Middle, & used for Nearsightedness! (Near a Cave!)

48. Concave vs. Convex Concave Mirror Concave Lens Convex Mirror
Convex Lens

59. EMS PASTA
Title
Names
Use the pasta to show the different wavelengths of the EMS
Label Radio, Microwaves, Infrared, Visible, Ultra Violet, X-Rays, & Gamma Rays
Include uses for each
DRAW in your notes on p. 17!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Study for Light QuizTomorrow!!!!!!!!!!!!!!!!!!!!!!!!!!!!