Name: ______________________________________ Date: _________ Per_____ Doc _____
Light WS
Light from the Sun is electromagnetic radiation – a form of energy that travels through
empty space. Sunlight is the part of the electromagnetic spectrum called the visible spectrum.
The visible spectrum contains all the colors of the rainbow. Each color in the visible spectrum
has its own wavelength and frequency. Use the diagram below to answer questions 1-7.
Red
Violet
1. Which color has the shortest wavelength?
2. Which color has the longest wavelength?
3. Which color has the lowest frequency?
4. Which color has the highest frequency?
5. What happens when all of the colors of visible light combine?
____________________________________________________________
6. What happens to wavelength as frequency increases?
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7. Between which to types of electromagnetic radiation is visible light located?
_______________________________
______________________________
Light Spectra on Computer
http://amazingspace.org/resources/explorations/light/index.html
Click on “Catch the Waves”
1. What is light made of? ________________________________________________________
2. Activate the light spectrum. Describe the result. ___________________________________
Click on “Light Facts”
3. Who discovered the light spectrum? ____________________ With what? _______________
4. How did the light spectrum get its name? __________________________________________
5. Each color of light has a different ____________________________. What is the same about
all of them? ___________________________________________________________________
6. What happens when light passes through glass or raindrops? __________________________
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______________________________________________________________________________
7. What causes wavelengths to bend? _______________________________________________
______________________________________________________________________________
8. Describe blue wavelengths. _____________________________________________________
Close this window. Click “Back” and then click “Making Waves”
9. What is the wavelength of light related to? ________________________________________
10. What is frequency? __________________________________________________________
______________________________________________________________________________
11. Adjust the energy level by moving the small square to make waves of varying energy. Count
the number of waves (frequency). Measure wavelength from crest to crest. Record your data.
Energy Level
Frequency
Wavelength
less
1
18
some
most
12. When energy is increased, frequency _______________ and wavelength _______________ .