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Absorption and Emission Spectra - OR

Absorption and Emission Spectra - OR

Assessment

Flashcard

Science

8th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is an absorption spectrum?

Back

An absorption spectrum is a spectrum of absorbed light, showing dark lines or bands where specific wavelengths of light have been absorbed by a substance, typically a gas or a cloud of gas.

2.

FLASHCARD QUESTION

Front

What is an emission spectrum?

Back

An emission spectrum is a spectrum of light emitted by a substance when it is heated or energized, showing bright lines or bands at specific wavelengths corresponding to the energy levels of the atoms.

3.

FLASHCARD QUESTION

Front

How can astronomers determine the composition of distant stars?

Back

Astronomers can determine the composition of distant stars by analyzing the absorption and emission spectra of the light they emit, comparing them to known spectra of elements.

4.

FLASHCARD QUESTION

Front

What role does temperature play in the emission spectrum of a star?

Back

The temperature of a star affects its emission spectrum; hotter stars emit light at shorter wavelengths and have a different spectral distribution compared to cooler stars.

5.

FLASHCARD QUESTION

Front

What elements are commonly found in interstellar clouds?

Back

Common elements found in interstellar clouds include hydrogen, helium, and trace amounts of heavier elements like carbon, oxygen, and nitrogen.

6.

FLASHCARD QUESTION

Front

What is the significance of dark lines in an absorption spectrum?

Back

The dark lines in an absorption spectrum indicate specific wavelengths of light that have been absorbed by elements in a gas or cloud, revealing the presence of those elements.

7.

FLASHCARD QUESTION

Front

How can the presence of specific gases be identified using emission spectra?

Back

The presence of specific gases can be identified using emission spectra by matching the observed spectral lines to the known emission lines of pure elements.

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