Overview of Light in Astronomy Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. What are the two components of an EM wave?

Question 2 2. On the electromagnetic spectrum, the waves with the highest frequencies have the smallest

Question 3 3. Select the correct statement using the fact that red light has a frequency of about 430 trillion Hz and blue light has a frequency of about 630 trillion Hz.

Question 4 4. In the equation for the energy for a photon, E = hf, the h stands for:

Question 5 5. The portion of light that _____ an object is the portion that's _____ by the object:

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Question 6 6. Which of these would be the better emitter of radiation?

Question 7 7. In quantum mechanics, particles are described in terms of what?

Question 8 8. Which of the following technologies is NOT a result of quantum mechanics mentioned in this lesson?

Question 9 9. Knowing what you now know about Wien's law, use several temperatures of your choice and the equation in this lesson to figure out the relationship between temperature and the maximum wavelength emitted.

Question 10 10. The Stefan-Boltzmann law:

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Question 11 11. A photon is also known as a:

Question 12 12. Which of the following would carry the most energy?

Question 13 13. On the electromagnetic spectrum, radio waves have the _____ frequency and the _____ wavelength.

Question 14 14. Which of the following has the highest energy?

Question 15 15. As on object gets hotter, you would expect that it:

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Question 16 16. The total energy emitted by a blackbody is mainly influenced by:

Question 17 17. The time that has passed between when light was originally emitted by a source and when we detect it on Earth is known as the:

Question 18 18. An AU is an:

Question 19 19. Which of the following is NOT a source of visible light?

Question 20 20. Which of the following is NOT a pure spectral color?

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Question 21 21. Which wave parameter measures the time it takes to complete one cycle?

Question 22 22. Which two parameters can both be measured in meters?

Question 23 23. Which type of medium do Electromagnetic waves need to travel?

Question 24 24. Calculate the energy of x-rays that have a frequency of 5,000,000,000,000,000,000 Hz.

Question 25 25. A hypothetical and idealized object, one that is a perfect absorber of all wavelengths of radiation that fall on it, is called a:

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Question 26 26. In quantum mechanics, why is the Schrodinger's Cat scenario problematic?

Question 27 27. Rewrite the given constant sigma 5.67 X 10^-8 J/(s m^2 K^4)(info) in the Stefan-Boltzmann law using watts and knowing that a superscript of -1 means you are dividing by that specific quantity.

Question 28 28. The speed of light is about:

Question 29 29. Which type of EM wave do we utilize to increase the thermal energy of our food?

Question 30 30. Lambda max:

Overview of Light in Astronomy Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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