Concept explainers
Two students are looking at a brightly lit full Moon, illuminated by reflected light from the Sun. Consider the following discussion between the two students about what the spectrum of moonlight would look like.
Student 1: I think moonlight is just reflected sunlight, so we will see the Sun's absorption line spectrum.
Student 2: I disagree. An absorption spectrum has to come from a hot, dense object. Since the Moon is not a hot, dense object, it can't give off an absorption line spectrum.
Do you agree or disagree with either or both of the students? Explain your reasoning.
Trending nowThis is a popular solution!
Learn your wayIncludes step-by-step video
Chapter 3 Solutions
Lecture- Tutorials for Introductory Astronomy
Additional Science Textbook Solutions
Biology: Life on Earth (11th Edition)
Campbell Biology (11th Edition)
Applications and Investigations in Earth Science (9th Edition)
Chemistry: Structure and Properties (2nd Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
- Calculate the wavelength of a photon having an energy of 5.89 x 10^11 J of energy. E = hc/λ You must show a correct numerical setup and your answer must include the correct mathematical unit.arrow_forwardA photon has wavelength of (λ = 531 pm). Does this photon have enough energy to ionize a hydrogen atom? Show DETAILED calculations to support your answer in the following format. It's a must for me! What are you solving for? What should be the units of your final answer? What information are you given? What information do you need? How will you connect the information you have and the information you need to solve this problem? (Provide a unit plan) Solve the problem. Be sure to show all units and write clearly. Does your answer make sense? How do you know? Thank youarrow_forwardIf a star has a peak wavelength of 450 nm (violet). What is the corresponding frequency of this wavelength? What is the corresponding temperature? What is the photon energy for a single photon of light (450 nm)?arrow_forward
- 8. A. What is the name of Instrument A below? Spectroscope Instrument A B. If you use this instrument to look at white light, what will you see? all the colors of the C. What is happening at the atomic level to cause each line below? (Be specific) D. The Ne emission spectrum is shown below. What is the difference between what you would observe when looking at a Ne light without and with instrument A? Ne 4000 5000 6000 7000arrow_forwardA lightbulb manufacturer makes bulbs with different "color temperatures," meaning that the spectrum of light they emit is similar to a blackbody with that temperature. Assuming the emitting areas of the filaments in two bulbs with color temperatures of 2,000 K and 4,000 K are the same, which of the two is the brighter? About how much brighter is this bulb than its companion?arrow_forwardThe following image is an energy level diagram for a simple atom, where E1 0.00 ev, E2 = 1.34 ev, and E3 3.95 ev. %3D n=3 E3=? n=2 E,=? n=1 - Ez=? What wavelengths appear in the atom's emission spectrum? (Enter your wavelengths in the order of smallest to largest.) 3.14x10-7 m 4.75×10-7 m 9.25x10-7 m You are correct. Your receipt no. is 162-5156 ? Previous Tries What wavelengths appear in the atom's absorption spectrum? (Enter your wavelengths in the order of smallest to largest.)arrow_forward
- Suppose the electron in a hydrogen atom moves fron n=2 to n=1. In which region of the electromagnetic spectrum whould you expect the light from this emission to appear? Provide justification for your answer.arrow_forwarda. Does a hot, thin gas emit a continuous spectrum, a bright line spectra with gaps between the lines, or a dark line spectra with all frequencies except the missing (absorbed) one? b. Why do we see dark line spectra when we look at stars? c. Both hydrogen and helium glow and absorb red. Are they the same frequency of red? d. A hot solid iron plate and a hot solid aluminum plate are the same temperature. Do the give off the same range of frequencies?arrow_forwardConsider the following table: Energy (J) Wavelength (nm) Frequency (s-1) region of spectrum A B 1.50 × 1014 C D 500 E F 9.94 × 10-19 G H I J 1 K L Part 1: What goes in position A? (The answer in scientific notation is of the form M × 10N. In this part you will only answer what goes in position M. In the next part you will enter what goes in position N.) Part 2: What goes in position A? (The answer in scientific notation is of the form M × 10N. In this part you will only answer what goes in position N. In the previous part you entered what goes in position M.)arrow_forward
- U U U U E Which diagram(s) show emission of Ultraviolet light? F B D A A D e B e E C F e-arrow_forwardA perfect black body has its surface temperature 27 cº Determine : Maximum radiation wavelength? Black body radiation intensity? The rate of energy released from 2m² Tungsten wire had its radiating surface area 8mm² and its temperature 2100K, considering that the wire is an ideal black body, Calculate the energy that the wire radiates in 10 minutes. Suppose the surface temperature of the Sun were about 12,000K, rather than 6000K. a. How much more thermal radiation would the Sun emit? b. What would happen to the Sun's wavelength of peak emission? c. Do you think it would still be possible to have life on Earth? Explain /A The energy radiated by a black body at 2300K is found to have the maximum at a wavelength 1260 nm, its emissive power being 8000W/m2. When the body is cooled to a temperature T K, the emissive power is found to decrease to 500W/m2. Find : (i) the temperature T k (ii) the wave length at which intensity of emission in maximum at the Te / Black body becomes yellow with λ…arrow_forwardWhich of the following statements are TRUE about the Sun's spectrum, which is shown in this image? Brightness 2.5 3.5 0 Jay 200 Sun's Spectrum vs. Thermal Radiator of a single temperature T = 5777 K peak spectrum of Sun spectrum of T=5777 K blackbody emission spectrum (continuum) absorption lines 400 600 800 1000 1200 1400 1600 Wavelength (nanometres) 1800 2000 The spectrum shows that the Sun emits light of all colors equally, which is why we see it as white. The spectrum shows the presence of many sunspots. The peaks and valleys in the black line reveal the chemical composition of the Sun. The spectrum shows absorption features (spectral lines). The spectrum represents a perfect blackbody.arrow_forward
- Stars and Galaxies (MindTap Course List)PhysicsISBN:9781337399944Author:Michael A. SeedsPublisher:Cengage LearningFoundations of Astronomy (MindTap Course List)PhysicsISBN:9781337399920Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
- Stars and GalaxiesPhysicsISBN:9781305120785Author:Michael A. Seeds, Dana BackmanPublisher:Cengage LearningPhysics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning