Question

why might astronomers be particularly interested in studying objects using wavelengths outside the visible spectrum?
objects outside our solar system only emit non - visible light
these wavelengths can reveal information about composition and processes that visible light cannot show
non - visible wavelengths are easier to detect with telescopes
visible light is too weak to travel through space
a photographer notices that when they use a red filter on their camera, green leaves appear very dark in the photo. what principle explains this observation?
green leaves absorb red light, so little red light passes through the filter to reach the camera
green leaves reflect red light too strongly
the camera sensor cannot detect green light through red filters
red filters automatically make green objects appear darker

Explanation:

First Question

Different wavelengths (including non - visible ones) carry unique information. For example, infrared can show heat signatures related to composition and processes, while visible light has its own limitations. Objects outside the solar system can emit visible light (so the first option is wrong). Non - visible wavelengths are not necessarily easier to detect (third option wrong), and visible light is not too weak to travel through space (fourth option wrong).

A red filter allows red light to pass through. Green leaves absorb red light (because they reflect green light). So, when a red filter is used, little red light (which is absorbed by the green leaves) passes through to the camera. Green leaves do not reflect red light strongly (second option wrong). The camera sensor can detect green light without a filter (third option wrong), and it's not that red filters automatically make green objects darker but rather the interaction of light absorption and the filter (fourth option wrong).

Answer:

These wavelengths can reveal information about composition and processes that visible light cannot show

Second Question