Scientific Question:
If I add highlighter ink into water and expose the mixture to the light of a UV flashlight will it glow? Which color will glow more?
Hypothesis:
If I put three different highlighter ink colors into water (yellow, pink and orange) and then put a UV flashlight pointing at it, then all the highlighter ink waters will glow in the dark and the yellow one will glow more because the phosphors in the highlighter ink turn the UV light into visible light, which makes it glow, and the yellow one is the one with the brighter color which makes it glow more.
Variables:
Independent Variable: Change in highlighter color
Dependent Variable: glow of the water
Control: The bottle of plain water
Constant: The temperature of water, the highlighter brand, amount of UV light they are exposed to, amount of water, environment.
Dependent Variable: glow of the water
Control: The bottle of plain water
Constant: The temperature of water, the highlighter brand, amount of UV light they are exposed to, amount of water, environment.