Question

if you arranged the following types of electromagnetic radiation in order from longest to shortest wavelength, what would be the correct sequence?
visible light, infrared, radio waves, ultraviolet, x - rays
x - rays, ultraviolet, visible light, infrared, radio waves
ultraviolet, visible light, infrared, x - rays, radio waves
radio waves, infrared, visible light, ultraviolet, x - rays
the sloan digital sky survey uses five different filters to study space objects. what advantage does this multi - filter approach provide compared to using white light?
it makes the images more colorful and appealing to look at
it reduces the amount of light pollution from earth
it allows telescopes to see farther into space
it allows scientists to analyze specific wavelengths and determine properties like temperature and composition

Explanation:

First question:

Step1: Recall electromagnetic spectrum

The electromagnetic spectrum from longest to shortest wavelength is: radio waves, microwaves, infrared, visible light, ultraviolet, X - rays, gamma rays.

Step2: Match with options

Among the given options, "Radio waves, infrared, visible light, ultraviolet, X - rays" matches the order.

Second question:

Step1: Understand multi - filter concept

A multi - filter approach in astronomy allows scientists to isolate and analyze specific wavelengths. Different wavelengths of light are emitted or absorbed by objects in space based on their properties (e.g., temperature, composition).

Step2: Evaluate options

• Option 1: Making images colorful is a secondary effect, not the main scientific advantage.
• Option 2: Filters do not reduce light pollution in a significant way compared to their scientific analysis purpose.
• Option 3: Telescopes' ability to see farther is more related to their aperture and other design aspects, not just filters.
• Option 4: This is correct as different wavelengths carry information about an object's temperature (e.g., Wien's law: \(\lambda_{max}T = b\), where \(\lambda_{max}\) is the peak wavelength, \(T\) is temperature and \(b\) is Wien's constant) and composition (absorption and emission lines at specific wavelengths).

Answer:

First question: Radio waves, infrared, visible light, ultraviolet, X - rays.
Second question: It allows scientists to analyze specific wavelengths and determine properties like temperature and composition.