Exploring Stellar Properties and Spectra

Exploring Stellar Properties and Spectra

Assessment

Flashcard

Science

10th 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 Wien's Law?

Back

Wien's Law states that the peak wavelength of radiation emitted by a black body is inversely proportional to its temperature. It can be expressed as: λ_max = b/T, where b is Wien's displacement constant (approximately 2898 μm·K).

2.

FLASHCARD QUESTION

Front

How do you calculate the peak wavelength of a star with a given surface temperature?

Back

Use Wien's Law: λ_max = b/T, where λ_max is the peak wavelength, b is Wien's displacement constant (2898 μm·K), and T is the surface temperature in Kelvin.

3.

FLASHCARD QUESTION

Front

What is the 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, indicating the presence of certain elements.

4.

FLASHCARD QUESTION

Front

How can you identify an unknown gas using absorption spectra?

Back

By comparing the absorption lines of the unknown gas with known absorption spectra of pure gases, you can identify the unknown gas based on the matching wavelengths.

5.

FLASHCARD QUESTION

Front

What is the difference between absorption and emission spectra?

Back

Absorption spectra show dark lines where light is absorbed by a gas, while emission spectra show bright lines where light is emitted by a gas.

6.

FLASHCARD QUESTION

Front

What is apparent magnitude?

Back

Apparent magnitude is a measure of the brightness of a star as seen from Earth, without accounting for its distance.

7.

FLASHCARD QUESTION

Front

What is absolute magnitude?

Back

Absolute magnitude is the measure of a star's intrinsic brightness, defined as the brightness it would have at a distance of 10 parsecs from Earth.

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