Understanding the Colors of the Sky

The video explains that the sky is not inherently blue but appears so due to the scattering of sunlight by the atmosphere. Blue light is scattered more than other colors, giving the sky its blue appearance. The sun emits a range of light frequencies perceived as white. Demonstrations show how adding or subtracting colors can mimic sky colors. At sunset, more scattering occurs, resulting in richer reds and oranges. The sky is a dynamic stage where all colors interact, with red traveling in straighter lines and blue scattering the most.

Why does the sky appear blue to us?

• Because the sky is inherently blue.

• Due to the scattering of blue light more than other colors.

• Because the sun emits only blue light.

• Because our eyes are more sensitive to blue.

What is the perceived color of sunlight by human eyes?

• White

• Yellow

• Blue

• Red

How can a computer demonstrate the color of the sky?

• By adding green and subtracting yellow from a white background.

• By adding deep blue and subtracting a bit of red from a white background.

• By adding red and subtracting blue from a white background.

• By adding yellow and subtracting green from a white background.

Why does the sun appear yellowish during the day?

• Because our eyes are more sensitive to yellow.

• Due to the scattering of blue light away from our eyes.

• Because it emits yellow light.

• Because the atmosphere absorbs all other colors.

What happens to light at sunset that causes the sky to appear orange and red?

• The atmosphere filters out all colors except red.

• There is more air for light to scatter off, enhancing reds and oranges.

• The sun is closer to the earth, making it appear red.

• The sun emits more red light at sunset.

How can a computer simulate the colors of a sunset?

• By adding more blue and subtracting red.

• By subtracting blue and adding more red.

• By adding green and subtracting yellow.

• By subtracting green and adding yellow.

What is the role of the sky in terms of color?

• It only reflects the color of the ocean.

• It is a stage where all colors interact and scatter.

• It absorbs all colors except blue.

• It is a fixed blue canvas.

Which color of light tends to travel in straighter lines?

• Red

• Blue

• Yellow

• Green

Which color scatters the most in the atmosphere?

• Yellow

• Green

• Deep blue

• Red