What type of spectrum does a heated rock emit?

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Homework Help Overview

The discussion revolves around the type of spectrum emitted by a heated rock, specifically whether it is a thermal radiation spectrum, an absorption line spectrum, or an emission line spectrum.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • The original poster attempts to reason that the glowing of the rock indicates it emits a thermal radiation spectrum, while others confirm this and introduce the concept of "black body" radiation. A question is raised about the physical mechanisms behind absorption and emission line spectra.

Discussion Status

The discussion includes some agreement on the nature of the spectrum emitted by the heated rock, with participants exploring the concept of thermal radiation. There is also an inquiry into the mechanisms of line spectra, indicating a branching of topics within the conversation.

Contextual Notes

Participants are navigating the definitions and characteristics of different types of spectra, with some uncertainty about the mechanisms involved in absorption and emission line spectra.

aerogurl2
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hi guys, i am having trouble with a problem. it's as goes:
if you heat a rock until it glows, its spectrum will be:
(a) a thermal radiation spectrum
(b) an absoprtion line spectrum
(c) an emission line spectrum

I think it's thermal radiation spectrum because it seems like the rock is retaining heat thus making it glow. but I'm not sure. can someon please help me. thanks.
 
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You are correct. It will be giving off broad spectrum "black body" thermal radiation.

Quiz Question -- what physical mechanism results in absorption and emission "line" spectra?
 
i don't really know. i just know thermal is heat and that's why the rock heats up.
 

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