Stellar Spectra

Stellar Spectra

Assessment

Flashcard

Science

9th - 12th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a stellar spectrum?

Back

A stellar spectrum is the range of electromagnetic radiation emitted by a star, which can be analyzed to determine its composition, temperature, density, and motion.

2.

FLASHCARD QUESTION

Front

What are the main types of spectra?

Back

The main types of spectra are continuous spectra, emission spectra, and absorption spectra.

3.

FLASHCARD QUESTION

Front

What is the difference between emission and absorption spectra?

Back

Emission spectra are produced when atoms emit light at specific wavelengths, while absorption spectra occur when atoms absorb light at specific wavelengths.

4.

FLASHCARD QUESTION

Front

How do you determine the composition of a star using its spectrum?

Back

By analyzing the absorption lines in a star's spectrum, scientists can identify the elements present based on their unique spectral signatures.

5.

FLASHCARD QUESTION

Front

What is the significance of the Doppler effect in astronomy?

Back

The Doppler effect helps determine the motion of stars and galaxies by observing shifts in the wavelengths of their emitted light.

6.

FLASHCARD QUESTION

Front

What is the relationship between wavelength and frequency?

Back

Wavelength and frequency are inversely related; as the wavelength increases, the frequency decreases, and vice versa.

7.

FLASHCARD QUESTION

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, including visible light, radio waves, X-rays, and gamma rays.

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