Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
34 Cards in this Set
- Front
- Back
|
What is Electromagnetic Spectrum? |
Electromagnetic Spectrum is a complete spectrum (or continuum) of all forms of light. |
|
|
An electromagnetic wave consists of what |
It consist of electric and magnetic fields which vibrates - thus making waves |
|
|
Electromagnetic Spectrum has a |
Vibrations |
|
|
The 9 electromagnetic spectrum consists of |
1. Radio Waves 2. Cell phones Waves 3. Microwaves 4. Radar Waves 5. Infrared Waves 6. Visible Light Waves 7. Ultraviolet Waves 8. X-ray Waves 9. Gamma Waves |
|
|
Properties of electromagnetic waves include ______, ______, _______. |
speed frequency wavelength |
|
|
the formula of speed |
s = f x w |
|
|
All light waves travel of a speed of _______ in a ______ |
3x10^8 m/s Vacuum |
|
|
All parts of the electromagnetic spectrum travel at the same _____. |
Speed |
|
|
________ and _______ have an indirect relationship |
Wavelength and Frequency |
|
|
Wavelength decrease, Frequency increase and |
Frequency decrease, Wavelength increase |
|
|
Electromagnetic wave characteristics |
short wavelengths have high frequency long wavelength have low frequency |
|
|
Electromagnetic waves and energy |
high frequency wave have high energy low frequency wave have low energy |
|
|
low energy waves with longest wavelength and low frequency |
radio waves |
|
|
includes AM FM radar and tv waves |
radio waves |
|
|
Radio Wave used in many devices such as ______, _______, ______. |
Remote control items Cellphones Wireless Devices |
|
|
Only radio waves are longer |
Microwaves |
|
|
wavelength of microwave |
1x10^4 m 1x10^-4 m ( 1m to 0.001m ) |
|
|
wavelength of radio waves |
10 ^ - 1 m and longer |
|
|
Use of microwaves |
Communication Medicine Consumer use (microwave ovens) |
|
|
Infrared Waves - invisible electromagnetic waves that are detect as ______ |
Heart |
|
|
Can be detected with special devices such as _____ |
night goggles |
|
|
______ used in ______ |
Infrared Waves Heat lamps |
|
|
Higher energy than microwave but lower than visible light |
Infrared Waves |
|
|
The portion of the electromagnetic spectrum that human eyes can detect |
Visible Light |
|
|
ROY G BIV |
Red Orange Yellow Green Blue Indigo Violet |
|
|
What color has the lowest frequency |
Red has the lowest frequency and violet the highest |
|
|
Higher energy than light waves |
Ultraviolet Waves |
|
|
Ultraviolet can cause _______ and ______ in humans |
Skin cancer and blindness |
|
|
Used in tanning beds and sterilizing equipment |
Ultraviolet Waves |
|
|
High energy waves |
X-ray Waves |
|
|
Used in medicine, industry and astronomy |
X rays |
|
|
Can cause cancer |
X-ray |
|
|
Highest energy |
Gamma rays |
|
|
Gamma rays blocked from Earth's surface by atmosphere |
Gamma rays |
