Visible light is the form of energy that allows humans to see the world. Usually in the form of color.
100
If I see an apple is the color red, what is really happening that makes me think I'm seeing red?
The color red is being reflected by the apple while all other colors from white light are being absorbed.
100
What is the color of chlorophyll B? Why is it that color?
Chlorophyll B is olive green because it absorbs red light and blue light but reflects green light.
100
What is a solution? Name three solutions you see everyday.
A solution is a mixture of evenly distributed molecules in a liquid.
Examples of solutions: tea, coffee, soda, sugar water, eyedrops, etc.
100
Wave
A moving ridge or disturbance in a medium that can transfer energy from one location to another.
200
What is the electromagnetic spectrum?
The entire range of frequencies that consist of all forms of wavelengths, from ultraviolet to infrared.
200
What are the types of cells in your eyes that help you to see color? What are the cells that help you to see black and white?
Cones help us to see colors in bright light.
Rods help us to see black and white in low light.
200
Why is blue-violet light the best color for plants to absorb?
Blue-violet light has a higher frequency and shorter wavelength, thus is generating more energy and is more efficient for plants to absorb.
200
What is chromatography? How does it work?
Chromatography is the separation of chemical particles from a solution through a filtering process. Heavier molecules stay towards the bottom while lighter molecules move further up the filter paper.
200
Wavelength
The distance between two high points of low points of a wave.
300
When light passes through a substance and BENDS, this is called _________________.
Refraction
300
With only blue light on in a dark room, why would a piece of purple look blue?
To make the color purple, you need blue AND red light. With only blue light on, the color purple would only reflect blue, thus that would be all you see.
300
Why is chlorophyll so important to the planet Earth? What is it able to do that nothing else on the planet can do?
Chlorophyll is the chemical that is able to turn light energy into chemical energy that animals and humans can then use on Earth.
300
In comparing pen chromatograms, what were the primary colors that came out of the black tester dot? Why were these colors there?
Brown, red, blue. These colors are what is being absorbed by the black ink.
300
Refraction
The bending of light when it passes through a medium or substance, like water or glass.
400
Light is a form of ____________. (Hint: It is not matter.)
Energy
400
Mr. Cabana is colorblind to the color green. Explain what is happening to the green light when Mr. Cabana looks at a green plant.
When Mr. Cabana looks at a green plant, the green light is reflected into his eyes, but he has no green cones and is unable to detect the color. He will see any other colors reflected, like brown or white.
400
In the fall, the leaves start to change color. Name the plant pigment or color that you see in leaves when chlorophyll breaks down and why they are important.
Leaves will turn orange-yellow because of the carotenoids. They act like a sunscreen to plants by absorbing the blue-violet light and reflecting red-yellow light.
400
DAILY DOUBLE: Write the relationship between frequency and wavelength.
When the frequency increases, the wavelength decreases.
When the frequency decreases, the wavelength increases.
400
Electromagnetic Spectrum
The entire range of frequencies from radio waves (the lowest) to gamma rays (the highest).
500
Explain what happens when light passes through a prism and what is created on the other side.
When light passes through a prism, it refracts or bends the light, breaking the white light into the different colors of the rainbow.
500
How do you make white light?
Mix together blue light, red light, and green light.
500
Name all four pigments that you find in a spinach leaf and their respective colors in the order from highest to lowest.
Xanthophyll - yellow
Carotenoids - orange yellow
Chlorophyll A - blue-green
Chlorophyll B - olive green
500
Who was the real marker thief? Use evidence from your lab to back up your claim.
MR. CABANA!!!
The diffusion of his marker's color best matched the tester dot.
500
Molecule
When two atoms, or the smallest particles of matter, join together, they form a molecule. Everything around you is made up of atoms and molecules.