If a Certain Gas Is Heated and Observed Through a Grating

question 92

Multiple Choice

If a certain gas is heated and observed through a grating, a bright line spectrum will be seen. If instead a source of continuous spectrum shines through a cooler sample of this same gas, a dark absorption spectrum is observed. How do the positions of the lines in these two spectra compare?

• A) All the lines in the spectrum from the hot gas will be at higher frequencies than the corresponding lines in the spectrum of the cooler gas.
• B) All the lines in the spectrum from the hot gas will be at lower frequencies than the corresponding lines in the spectrum of the cooler gas.
• C) The lines in the two spectra will be at the same frequencies. They will be the same spectra.
• D) These two processes produce spectra by completely different means, and there will be no relationship at all between the two spectra.

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Definitions:

Preoperational

The stage in Jean Piaget's theory of cognitive development where children (aged 2 to 7) begin to engage in symbolic play and struggle with logic and taking the perspective of others.

Cognitive Development

Cognitive Development is the process by which a child learns to reason, solve problems, and gain knowledge through interaction with the world around them, as described in theories such as those by Piaget.

Piaget's Stages

A theory of cognitive development devised by Jean Piaget, which describes how children's understanding of the world changes through four stages of development.

Object Permanence

A cognitive development milestone in which an infant realizes that objects continue to exist even when they cannot be seen or heard.