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Colors and Light

Source: The Need Project
Topics: Middle Years (5-9), Great Science Fair Project Ideas

Grade Levels:
K-3

Question:
Do some colors absorb more sunlight than others?

Possible Hypotheses:
All colors absorb the same amount of sunlight.
Some colors absorb more sunlight than others.

Materials:
Four tall clear glasses
Water
Food coloring
Immersion thermometer

Procedure:

  1. Fill the glasses with the same amount of cold water. Record the temperature of the water.
  2. Add 20 drops of red food coloring to one glass, 20 drops of yellow to one glass, and 20 drops of blue to one glass.
  3. Place all four glasses in a sunny place for 15 minutes.
  4. Record the temperature of the water in all four glasses.

Analysis and Conclusion:

Did the temperature of the water change? Which water got warmest? What did you learn about colors and light?

Reprinted with the permission of the NEED Project. © 2008 National Energy Education Development Project - All Rights Reserved.

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21 comments

Comments from readers

  1. May 3, 2008
    Alley Mart says:
    I hate science.
  2. May 7, 2008
    comfort garcia says:
    This post is hidden because it has been flagged as inappropriate.
  3. May 14, 2008
    sonia lopez says:
    i need  help  i try to do it today but the sunlight didnt help me
  4. Aug 19, 2008
    T. Bryant says:
    Maybe you could use differant light.  Ultraviolet or flourescent.  Just a thought.
  5. Sep 3, 2008
    kendria says:
    iu need a very good topic whiac is an itrsulitauiontiand
  6. Sep 11, 2008
    bill nye the science guy says:
    i love science it is everything it makes everything what it is!
  7. Oct 4, 2008
    Iyanna says:
    science is ok some times
  8. Oct 4, 2008
    Iyanna says:
    science is stupid
    sike i like science
  9. Oct 14, 2008
    angelik tiptoes says:
    science is hard!
  10. Nov 4, 2008
    martha says:
    science in the u.s.a is a ok!
  11. Nov 8, 2008
    nikia says:
    i think your project is off the change!!!!!
  12. Nov 8, 2008
    nikia says:
    if i was the teacher i would give you an big fat A!!!!
  13. Nov 8, 2008
    kikiwuzhere says:
    science is the gayest subject u could ever thnik of right nrxt to social studies. i mean y do we need to know social studies. its not like when u get a job at burger kind there have u take a test on the revolutionary war. they just teach us these things to torture us. thats y obama is gonna change things around. like free smoothies every friday. YAH!
  14. Nov 15, 2008
    elo says:
    i hate this lozer
  15. Nov 15, 2008
    annabel says:
    Science is fukish
  16. Nov 18, 2008
    nia says:
    cool isnment
  17. Nov 26, 2008
    mayi says:
    umm... can somebody tell me the temperature of the water before and after? ::s please :)
  18. Nov 26, 2008
    NiA =] says:
    the tempeture is 48 degrees!!!
  19. Nov 28, 2008
    ossiany says:
    For those who say science is retarded well its more like ur retarded!!and for who those who say why do we have to learn science well you dont have if your goin to work in a fast food restaurant which would problably be were you  gonna work at !!!
  20. Nov 29, 2008
    Marta says:
    and what didi you learn about colors and light?
    explanation for a 7 year old...
  21. Dec 2, 2008
    yack says:
    sciencie is totally cool yoyo man

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