Question

1. person a is representing a person at sunset. why would person a see the colors red and orange in the sky during a sunset?

(image of a diagram showing light rays and a person at sunset)
options:

• blue & purple because the wavelengths are shorter
• blue & purple because the wavelengths are longer
• red & orange because the wavelengths are shorter
• red & orange because the wavelengths are longer

1. why do different colors of light scatter differently within our atmosphere?

options:

• different levels of the atmosphere vary in temperature
• all colors scatter at the same location within our atmosphere
• different colors of light have different wavelengths

Explanation:

Question 4

To determine why person A sees red and orange during sunset, we recall the concept of light scattering (Rayleigh scattering). Shorter - wavelength light (like blue, purple) scatters more easily in the atmosphere. During sunset, light has to travel a longer path through the atmosphere. Longer - wavelength light (red, orange) is scattered less and reaches our eyes. So red and orange have longer wavelengths, and this is why we see them during sunset. Now let's analyze the options:

• Option 1: Talks about blue and purple, which is incorrect for sunset colors.
• Option 2: Blue and purple have shorter wavelengths, not longer, so this is wrong.
• Option 3: Red and orange have longer wavelengths, not shorter, so this is wrong.
• Option 4: Correctly states that red and orange are seen because their wavelengths are longer.

The reason different colors of light scatter differently in the atmosphere is related to their wavelengths. Rayleigh scattering depends on the wavelength of light (\( \propto \frac{1}{\lambda^4} \), where \( \lambda \) is the wavelength). Different colors have different wavelengths (e.g., blue has a shorter wavelength than red). Temperature variation in the atmosphere (option 1) is not the main reason for different scattering of colors. And all colors do not scatter at the same location (option 2 is wrong). So the correct reason is that different colors of light have different wavelengths.

Answer:

D. Red & orange because the wavelengths are longer (assuming the last option is D, if the options are labeled as per the order: the fourth option "Red & orange because the wavelengths are longer")

Question 5