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Pitt County Schools 307012 Astronomy Instructional Guide NOTE: There is a minimum of five nighttime observation sessions throughout the semester. These would include lunar and planetary observations, meteor showers, constellation identification, and deep-sky objects (nebula, star clusters, and galaxies). TIME FRAME: FIRST GRADING PERIOD SCOS GOALS AND OBJECTIVES Goal 1: The learner will develop an understanding of observational astronomy including instruments used in observing the universe. 1.01 Analyze the characteristics and properties of waves: Wavelength Frequency Period Amplitude Velocity Reflection Refraction 1.02 Analyze light in terms of electromagnetic radiation and its dual nature of wave and particle (Photon Theory) Describe the electromagnetic spectrum in terms of (1) the six different classifications within the electromagnetic spectrum, (2) the direction in the spectrum where the frequency or the energy is increasing, (3) the characteristic ESSENTIAL QUESTIONS, BENCHMARKS, AND SKILLS OBSERVATIONAL ASTRONOMY, LIGHT How can I locate objects in the night sky? What are constellations and how can I identify them? Identify constellations in the night sky using star charts. Understand and use the coordinate systems (right-ascension; altitudeazimuth) and find major stars and reference points in the night sky. Understand the concept of Universal Time and how to convert to and from Eastern Standard (Daylight) Time. How are the speed, frequency, and wavelength of electromagnetic waves (actually all waves) related? v f ESSENTIAL TASKS, STRATEGIES, PROJECTS, CONNECTIONS Some of the observing sessions can be used for constellation identification. Lab: Using the Star and Planet Locator RECOMMENDED RESOURCES AND ASSESSMENT TEXTBOOK: Portions of Overview 1 (Night Sky), Chapter 1 (Constellations, Celestial Sphere, Motion of Stars and Planets, Zodiac, Ecliptic), Essay 1, Chapters 3 & 4, Essay 2 (Universal Time), Table 7 in Appendix. ASTRONOMY RESOURCE NOTEBOOK Demo: If the physics department does not have a Doppler Effect demonstration, swing a buzzer around in a circle. Celestial Sphere (Sargent-Welch) 1 that distinguishes one type of em radiation from another. 1.03 Analyze the electromagnetic radiation given off by a heated object (blackbody) in terms of the graph of intensity (brightness) vs. wavelength for various temperatures and describe their similarities and differences. Analyze Wien’s law in terms of the intensity vs. wavelength graph and its usefulness to astronomers. 1.04 Analyze spectra in terms of their formation and types (continuous spectra, absorption spectra, and emission spectra). Describe what type of object produces each type of spectrum. Describe the structure of an atom remembering to include its quantized energy levels. Describe how light is produced by emission and how an atom during the process of absorption absorbs light. List other characteristics of a celestial object that can be determined from its spectrum. 1.05 Define and describe the Doppler Effect. Explain how the frequency of the wave changes with its motion. Describe the use of the Doppler Effect to astronomers in determining the motion of celestial objects. 1.06 Compare and contrast reflecting and refracting telescopes. State the purposes of the objective lens and the eyepiece in a What is the nature and characteristics of light? Lab: Telescope Lab What types of the electromagnetic radiation and what are the characteristics of these types of radiation? Project: Finding the resolving power of your eyes What is the speed of all types of electromagnetic radiation? How do astronomers use these different types of electromagnetic radiation to learn more about the cosmos? What is reflection and refraction? How is light reflected and refracted? What is diffraction and how does it affect astronomers’ observations? . Wien’s Law: T 3 10 K nm m 6 What is the Doppler Effect and how is it used to make predictions about the frequency shift or the motion of the object? What is “red 2 refracting telescope. E3xpalin why a mirror can serve the same purpose as an objective lens, and why most modern telescopes are reflectors rather than refractors. Analyze the three “powers” of a telescope: (1) light-gathering power, (2) resolving power, and (3) magnification. 1.07 Analyze the observations of the universe made in different frequencies of light other than visible light and their importance to astronomers. 1.08 Students will learn and use the basic coordinate systems to locate objects on the celestial sphere, identify and use the basic reference points on the celestial sphere, use the Star and Planet Locator (or equivalent), as well as identify the constellations that are visible during the semester that the course is being offered. Understand what Universal Time is and be able to convert to and from Eastern Standard (Daylight) Time. shift” and the “blue shift.” Goal 1: The learner will understand how observations lead to increasing knowledge of the Solar System. 1.09 Examine the contribution of ancient astronomers to the understanding of the universe, including Kepler. 1.10 State Newton’s Laws of Motion and use them to describe why celestial ASTRONOMICAL MOTIONS (KEPLER, NEWTON) How ancient astronomers determined approximate sizes and distances within the solar system? Understand /use Kepler’s Three Laws Understand Newton’s Law of Gravitation and be able to calculate gravitational forces. What are telescopes? What are the different types? How do they work? What are their “powers”? What are their limitations? Demo: Draw an ellipse on the white/greenboard with two plumber helpers and a loop of string. (The plumber helpers are the foci of the ellipse.) Essential Lab: Ellipses and Orbits TEXTBOOK: Chapter 1 Sections 1.2 – 1.4 ASTRONOMY RESOURCE NOTEBOOK Suggested 3 objects move they way they do. Distinguish between mass and weight. Use these laws in the description of physical phenomena. 1.11 State Newton’s Law of Gravity in own words and describe what Law of Inverse-Square means. Explain why gravity is needed to keep one object orbiting around another by using Newton’s Law of Motion and the Law of Gravity. Show the effect changing the distance has on the force between two objects by calculating how much the gravitational force has increased or decreased. Define the period of one object orbiting another. Define the term velocity Define the terms escape velocity and surface gravity and how they are related to the mass and gravitational force of the planet or object. Understand and use concept of inertia and Newton’s Law of Gravitation to surface gravity, escape velocity, and orbital motion. Be able to calculate escape velocity, orbital speeds and distances for both celestial objects and artificial satellites, mass of a planet that has satellites using actual data. Task: Math tasks to do the calculations given in benchmark section using complicated real data. Resource: Handoperated Planetarium that shows the motion of Earth, Moon, and Venus (Sargent-Welch) Kepler’s Third Law: P 2 a3 Newton’s Second Law: F ma Newton’s Law of Gravitation: F GMm r2 Velocity of a satellite in circular orbit: C 2r v P P TIME FRAME: SECOND GRADING PERIOD SCOS GOALS AND OBJECTIVES Goal 3: The learner will develop an understanding of the Earth and its processes. 3.01 Explain why the Earth is spherical in shape while objects like asteroids are irregular in shape and hwy the Earth is not perfectly spherical by using Newton’s Laws of Gravity and of Motion. ESSENTIAL QUESTIONS, BENCHMARKS, AND SKILLS EARTH / MOON SYSTEM What is the structure of the Earth? How does it account for the phenomena we observe? How did scientists determine that structure? ESSENTIAL TASKS, STRATEGIES, PROJECTS, CONNECTIONS RECOMMENDED RESOURCES AND ASSESSMENT TEXTBOOK: Chapters 12, 13 ASTRONOMY RESOURCE NOTEBOOK 4 Describe the Earth’s internal structure. Describe how earthquakes enabled scientists to determine the main features of the Earth’s internal structure. Understand the process of differentiation in terms of Earth’s formation. 3.03 Describe the theory of plate tectonics and describe the effect it had on Earth’s surface. Define and use the concept of convection appropriately in the description. 3.04 Describe the structure of the Earth’s atmosphere. State the composition of ozone layer and its effect on life on Earth. Define and describe the Greenhouse Effect and its effect on the Earth’s climate. 3.05 Analyze the Earth’s magnetic field in terms of its analogous structure to a bar magnet and its structure around the Earth. Describe the origin of the Earth’s magnetic field in terms of the dynamo effect. Analyze the Van Allen belts in terms of structure and origin. Analyze the northern lights (aurora borealis) and southern lights (aurora australis) in terms of description and formation. 3.06 Explain how the tilt of the axis of the Earth and its orbital motion case the seasons. Predict whether or not a planet would have seasons based on the tilt of its axis. 3.02 What is the structure and composition of the Earth’s atmosphere? What is and how did the Greenhouse Effect arise? How does the Greenhouse Effect affect Earth’s temperature? What are ozone and the ozone layer? How does if affect life on Earth? What is the structure of Earth’s magnetic field? What is its origin? How does it affect the Earth? How does it cause the effects of Earth’s magnetic field such as aurora, Van Allen belts, shielding from solar particles. How does the Earth’s motion and axis tilt causes day and night and the seasons? Understand the Moon in terms of its 5 Goal 4: The learner will develop an understanding of the Moon and its processes. 4.01 Analyze the Moon in terms of its structure, motion, phases, and surface features. 4.02 State whether or not the Moon has the following characteristics and the reason why it does or does not have a magnetic field, an atmosphere, and extreme temperatures. 4.03 Analyze the theories describing the origin of the Moon. State the theory that is currently thought to be the most probable. State the evidence against theories no longer held. 4.04 Explain how differential gravitational forces, caused by the Moon and the Sun, produce tides on the Earth. Relate the different types of tides to the Earth-Moon-Sum configurations. Describe the long-term effects of tidal forces on the Earth-Moon system (tidal breaking). 4.05 Explain the circumstances that produce an eclipse of the Sun (partial , total, annular). Explain the circumstances that produce an eclipse of the Moon and explain why the Moon does not always become totally dark when under total ellipse conditions. Describe the two parts of a shadow – penumbra and umbra. Explain why we do not see eclipses every month. Discuss a safe method for viewing solar eclipses. origin, structure, motion, phases, and surface features. How does the Moon produce tides? How are solar and lunar eclipses are produced? Goal 2: The learner will develop an understanding of our Solar System, its formation, its processes, and the objects within it. 2.01 Identify the objects that compose our Solar System and categorize them. SOLAR SYSTEM, TERRESTRIAL PLANETS, JOVIAN PLANETS How does the solar nebula theory explain the formation of the solar system? How does the solar nebula Lab: Formation of craters. Project: Students keep a log of the Moon phases as seen from their home over a month. Lab: Use internet to locate predicted tide heights at Bay of Fundy and/or other locations. Go through the data to get the dates of spring and neap tides, then relate the dates to the lunar phases. TEXTBOOK: Chapter 14, 15, 16 Lab: Scale Model of the Solar System ASTRONOMY RESOURCE NOTEBOOK 6 Sun Planets (terrestrial and jovian) Asteroids Meteoroids Comets 2.02 Describe the formation of the Solar System in terms of the solar nebula theory and use that theory to describe why there are two types of planets (terrestrial and jovial). 2.03 Compare and contrast the planets within each type of planets with each other (geology, atmospheres, magnetic fields, atmospheres, surface features, etc). 2.04 Describe the processes that give rise to surface features, atmospheres, magnetic fields, etc on the planets. Predict whether or not a planet will have those features. theory explain the two types of planets found in our solar system? Goal 2: The learner will develop an understanding of our Solar System, its formation, its processes, and the objects within it. 2.05 Analyze asteroids in terms of their nature, origin, and their implications for the dinosaur extinction. 2.06 Distinguish between meteoroid, meteor, and meteorite. Describe how the light generated by a meteor is formed. Describe the valuable information that may be gained from studying meteorites. Describe the cause of meteor showers. 2.07 Analyze comets in terms of their nature, structure, and orbits. Describe the origin of comets in terms COMETS, METEORS, ASTEROIDS How do you explain the nature and origin of comets, asteroids, and meteors? (1) ASTROIDS Origin of asteroids Characteristics of asteroids, including their orbits. Implications for use and for dinosaur extinction. (2) COMETS Origin Nature and structure Orbits (3) METEORS Understand the terminology for meteors, meteoroids, and How do the terrestrial and jovian planets compare and contrast? What processes give rise to a planet’s atmosphere, its magnetic field, surface features, etc.? Demo: Build a comet. TEXTBOOK: Chapter 17 ASTRONOMY RESOURCE NOTEBOOK Internet resources: Galileo mission to Jupiter photographed asteroids; NEAR mission to asteroids Eros. 7 of the Oort Cloud. meteorites. Origin of meteors and meteor shows. Meteorite craters and meteor falls TIME FRAME: THIRD GRADING PERIOD SCOS GOALS AND OBJECTIVES Goal 5: The learner will develop an understanding of stars, including our Sun. 5.01 Analyze the Sun in terms of the Sun’s size, density, composition, features, and structure. Describe the two mechanisms that transport energy from the Sun’s core to the Sun’s surface. 5.02 Describe the solar magnetic field and how the solar magnetic field produces sunspots, prominences, and flares. Describe the solar cycle and the effects of solar flares and long-term sunspot activity on the Earth. 5.03 Analyze the production of energy in the Sun in terms of nuclear fusion, chain reactions, and the conversion of mass into energy. Recognize that nuclei stay together by the strong nuclear force. 5.04 Define and describe hydrostatic equilibrium in terms of the idea gas law and gravity. Describe how hydrostatic equilibrium is a “star’s safety valve”. ESSENTIAL QUESTIONS, BENCHMARKS, AND SKILLS SUN What is the structure of the Sun? How does energy get from the core to the surface of the Sun? How do you explain the Sun in terms of it general characteristics (size, structure, density, etc.)? ESSENTIAL TASKS, STRATEGIES, PROJECTS, CONNECTIONS Demo: Have the students look at sunspots by using the projection method. Any other method risks eye damage! RECOMMENDED RESOURCES AND ASSESSMENT TEXTBOOK: Chapter 5 ASTRONOMY RESOURCE NOTEBOOK Lab: Sunspot lab What are the features on the Sun and the processes that give rise to them (sunspots, prominences, flares, etc.)? How does the Sun produce energy? Where does the energy come from? What is the “safety valve” for the Sun (and other stars)? (hydrostatic equilibrium) How does it work? 8 Goal 5: The learner will develop an understanding of stars, including our Sun. 5.05 Analyze the basic properties of a star: star’s distance, temperature, luminosity, composition, radius, mass, and radial velocity. Explain clearly the magnitude scale of stars, and its relationship to factors of brightness. Define and calculate absolute and apparent magnitude. Describe the spectral classification scheme for stellar spectra, give the letter designators in order of decreasing temperature (O B A F G K M) Sketch the Hertzsprung-Russell (H-R) diagram and show the main groups of stars on the diagram. Describe the mass-luminosity relationship. Describe the relationship that exists between a star’s luminosity, radius, and surface temperature. Relate the rate of the star’s evolution to the mass of the star. STELLAR CHARACTERISTICS What are the basic properties of a star? (Star’s distance, temperature, luminosity, composition, radius, mass, and radial velocity.) a. Understand and use the magnitude scale. b. Understand the spectral scale. c. Understand and use the Hertzsprung-Russell diagram. d. Understand the massluminosity relationship. Goal 5: The learner will develop an understanding of stars, including our Sun. 5.06 Describe each step in the life cycle of a star STELLAR LIFETIME (BIRTH TO DEATH); STELLAR REMANTS TEXTBOOK: Chapter 6 Lab: Magnitude Lab ASTRONOMY Lab: Hertzsprung-Russell RESOURCE Diagram (plot a few stars NOTEBOOK and able to draw conclusions from the diagram) TEXTBOOK: Chapters 7, 8 9 from interstellar cloud to stellar remnant for both low and high mass stars and be able to define all the terms involved. Describe the processes of novas, Type I and II supernovas. Describe how white dwarfs in binary stars are related to novas and supernovas. 5.07 Analyze the stellar remnants, white dwarfs, neutron stars/pulsars, and black holes in terms of their formation and physical characteristics. Goal 6: The learner will develop an understanding of galaxies, including our own Milky Way Galaxy. 6.01 Analyze the Milky Way Galaxy in terms of the observations that led to conclusions about its shape, mass, its structure, and its major features. Define and describe Population I, II, and III stars and state their significance. Explain how dust and gas obscuration affects our view of the Milky Way galaxy. 6.02 Analyze elliptical, spiral, barred spiral, and irregular galaxies in terms of the major differences in structure, gas/dust content, and stellar populations. 6.03 Describe how the structure of a galaxy can be affected by the random motions of the collapsing gas cloud and through collisions and interactions with other galaxies. 6.04 Describe how astronomers determine the distances to galaxies, the diameter and mass of What are the steps in life cycle of high- and low-mass stars? Describe each step using appropriate terminology and complete descriptions of the processes. What is the nature and characteristics of stellar remnants such neutron stars, pulsars, white dwarfs, and black holes? MILKY WAY GALAXY, OTHER GALAXIES What are the major features of our Milky Way galaxy in terms of size, structure, mass, and other major features? Understand how our observations of the Milky Way galaxy depend on our position within it. What are the features and structures of the types of galaxies? How do astronomers determine the motions, distances, and masses of galaxies using redshift and Hubble’s law? Understand the rise of Hubble’s law from the Big Bang theory. ASTRONOMY RESOURCE NOTEBOOK Use the internet to do search on recent supernovas and/or stellar remnants. Use Hubble Space telescope photographs to identify stars in their life cycle or stellar remnants. TEXTBOOK: Chapters 9, 10 ASTRONOMY RESOURCE NOTEBOOK Use internet / astronomical photographs to classify galaxies. Use internet to access discoveries about older, farther away quasars and galaxies and their implications in cosmology. 10 galaxies. Define and use the terms: redshift and Hubble’s Law. 6.05 Describe galaxy clusters such as the Local Group. Distinguish between rich and poor clusters. Describe the term supercluster. 11