Practice - Application in Astronomy
Practice Questions
Test your understanding with targeted questions
What happens to the wavelength of light emitted from an object moving away from the observer?
💡 Hint: Think of what 'red' represents in terms of wavelengths.
What is the formula that relates the change in wavelength to radial velocity?
💡 Hint: Look for the components: change in wavelength, velocity, and speed of light.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is redshift?
💡 Hint: Remember the color shift in objects moving away.
True or False: Blueshift indicates that a star is moving away from us.
💡 Hint: Think about the color change involved.
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Challenge Problems
Push your limits with advanced challenges
If a star emits light at 500 nm and is found to exhibit a redshift of 10 nm, calculate the star's radial velocity.
💡 Hint: Use the formula appropriately to find the velocity.
Astrophysicists measure a spectral line shift for a hydrogen star to be 15 nm longer than the expected 486 nm. What can you conclude about the star's motion?
💡 Hint: Note the direction of the shift in understanding its motion.
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Reference links
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