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April 13 th , 2012 Do you have: friggatriskaidekaphobia or Paraskevidekatriaphobia

April 13 th , 2012 Do you have: friggatriskaidekaphobia or Paraskevidekatriaphobia or just Triskaidekaphobia. ESSENTIAL QUESTION :. What does Wien’s Law tell us about a star’s spectra. LEARNING OBJECTIVE:. Describe how a star’s color relates to temperature.

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April 13 th , 2012 Do you have: friggatriskaidekaphobia or Paraskevidekatriaphobia

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  1. April 13th, 2012 Do you have: friggatriskaidekaphobia or Paraskevidekatriaphobia or just Triskaidekaphobia ESSENTIAL QUESTION: What does Wien’s Law tell us about a star’s spectra LEARNING OBJECTIVE: Describe how a star’s color relates to temperature. WARM UP: Yesterday and today two important events happened in space exploration. What were they? REFLECTION: Why does a chart, graph or diagram such as the HR diagram carry such importance to astronomers (think about what is the importance of charts, graphs and diagrams in business, sports, etc) AGENDA • Warm up • Discussion: Wien’s Law and Blackbodies Electrons and Light • Video Clip on Quantum Jumping • In-class worksheet: Atoms and Light

  2. April 13, 2012 FORMATIVE ASSESSMENT: . Teacher led Questions on student’s understanding of today’s lesson. VOCABULARY: Luminosity, apparent brightness, Wien’s Law, Stephen-Boltzmann Law, blackbody, emission spectra, absorption spectra, continuous spectra . PRACTICE: ASSIGNMENTS: EM spectrum #9, Light and Atoms #11 NOTES:

  3. April 12, 2012 ESSENTIAL QUESTION: What does Wien’s Law tell us about a star’s spectra LEARNING OBJECTIVE: Describe how a star’s color relates to temperature. WARM UP: We use the words brightness and luminosity (something can be luminous) almost interchangeably. But in astronomy they are not the same. What do you think is the difference? Formative assessment SOLVE IN THE SPACE PROVIDED. Not for 2nd Period yet Sirius A is at a temperature 11,000 K while Sirius B is at 32,500 K. Why can we see Sirius A and not Sirius B? AGENDA • Warm up • Discussion: Wien’s Law and Blackbodies • Electrons and Light • Video Clip on Quantum Jumping • In-class worksheet: Atoms and Light • IF it is overcast or more than 50% cloud cover no Star Party

  4. April 12, 2012 FORMATIVE ASSESSMENT: . Teacher led Questions on student’s understanding of today’s lesson. VOCABULARY: Luminosity, apparent brightness, Wien’s Law, Stephen-Boltzmann Law, blackbody, emission spectra, absorption spectra, continuous spectra . PRACTICE: ASSIGNMENTS: EM spectrum #9, Light and Atoms #11 NOTES:

  5. April 11, 2012 ESSENTIAL QUESTION: What does Wien’s Law tell us about a star’s spectra LEARNING OBJECTIVE: Describe how a star’s color relates to temperature. WARM UP: Use Wien’s Law, calculate the temperature of the brightest star in Orion, Betelgeuse, lm = 892 nm. Calculate the temperature of the second brightest star in Orion, Rigel, lm = 250 nm. k = 2.9 x10-3m•K . What color is each star? REALITY CHECK: In the formative section under today’s warm up indicate where on the scales (look to the left) where you find yourself . Explain what you are struggling with. AGENDA • Warm up • Discussion: Wien’s Law and Blackbodies • Electrons and Light • Quiz for those absent on Friday • Video Clip on Quantum Jumping • In-class worksheet: Atoms and Light

  6. April 11, 2012 FORMATIVE ASSESSMENT: . Teacher led Questions on student’s understanding of today’s lesson. VOCABULARY: Frequency, amplitude, wavelength, wave speed, color, particle/wave duality, photo-electric effect gravity, Earth’s acceleration due to gravity, mass, neap tide, spring tide, gravitational tides , inertial tides . PRACTICE: ASSIGNMENTS: NOTES:

  7. April 10, 2012 ESSENTIAL QUESTION: What does Wien’s Law tell us about a star’s spectra LEARNING OBJECTIVE: Describe how a star’s color relates to temperature. WARM UP: How can you make a light brighter? How can you change the color (without a filter) of a light? FOR PER. 1,3-6: If you want to make a red light equal to brightness of a blue light what do you need to do? REALITY CHECK: In the formative section under today’s warm up indicate where on the scales (look to the left) where you find yourself . Explain what you are struggling with. AGENDA • Warm up • Discussion: Wien’s Law and Blackbodies • Electrons and Light • Quiz for those absent on Friday • Video Clip on Quantum Jumping • In-class worksheet: Atoms and Light

  8. April 10, 2012 FORMATIVE ASSESSMENT: . Teacher led Questions on student’s understanding of today’s lesson. VOCABULARY: Frequency, amplitude, wavelength, wave speed, color, particle/wave duality, photo-electric effect gravity, Earth’s acceleration due to gravity, mass, neap tide, spring tide, gravitational tides , inertial tides . PRACTICE: ASSIGNMENTS: NOTES:

  9. April 09, 2012 ESSENTIAL QUESTION: What is the relationship between temperature color and wavelength LEARNING OBJECTIVE: Describe the major properties of star light. WARM UP: Period 1,3-6 Scientific Notation Period 2: Gravity problem review AGENDA • Warm up • Discussion Wien’s Law and Blackbodies or Atoms

  10. April 09, 2012 FORMATIVE ASSESSMENT: . Teacher led Questions on student’s understanding of today’s lesson. VOCABULARY: Frequency, amplitude, wavelength, wave speed, color, particle/wave duality, photo-electric effect gravity, Earth’s acceleration due to gravity, mass, neap tide, spring tide, gravitational tides , inertial tides . PRACTICE: ASSIGNMENTS: NOTES:

  11. Solve the following , if the problem requires more than one step, show the work for that step. 1) 4.1357 E10-15 * 5.4 E102= ? 2) 1.695 E 104 ÷ 1.395 E 1015 = ? 3) 4.367 E105 * 1.96 E1011= ? 4) 6.97 E 103* 2.34 E10-6+ 3.2 E10-2 = ? 5) 5.16 E10-4÷ 8.65 E10-8+ 9.68E104= ?

  12. 2nd Period: The spaceship orbits an asteroid at a distance of 1000 km. A second spaceship triple the mass docks with the first space ship and both move out to orbit the asteroid at a distance of 6000 km. By what factor has the gravity changed from when the single spacecraft was orbiting the asteriod to the new orbit that two docked space crafts are orbiting. SHOW WORK FIRST Tell me what FACTOR did I increase the distance (by how many times did the distance increase). SECOND: What FACTOR did I increase the mass.

  13. Use Scientific Notation (and only the scientific notation!) to find the answer to the following multiplictions, divisions, additions. 1. 4.1357 x 10-15 * 5.4 x 102 = 2.2 x 10-122. 1.695 x 104 ÷ 1.395 x 1015 = 1.215 x 10-113. 4.367 x 105 * 1.96 x 1011 = 8.56 x 10164. 6.97 x 103 * 2.34 x 10-6 + 3.2 x 10-2 = 4.83 x 10-25. 5.16 x 10-4 ÷ 8.65 x 10-8 + 9.68 x 104 = 1.03 x 105

  14. April 05, 2012 ESSENTIAL QUESTION: What is the relationship between temperature color and wavelength LEARNING OBJECTIVE: Describe the major properties of star light. WARM UP: Examine the HR diagram. 1) What is graphed on the bottom side? 2) What are the increments? 3) What happens as you move from right to left? 4) What do you think happens to the size of a star from right to left IF the brightness stays the same? AGENDA • Warm up • Quiz for 1,5,6 Tomorrow for 2,3,4 • Discussion Wien’s Law and Blackbodies • Wanted: NEXT years juniors and seniors who are NOT part of the Engineering Academy for next year’s Robotics class– there are only 15 spots. Math and science skills are a must, Physics a plus!

  15. April 05, 2012 FORMATIVE ASSESSMENT: . Teacher led Questions on student’s understanding of today’s lesson. VOCABULARY: Frequency, amplitude, wavelength, wave speed, color, particle/wave duality, photo-electric effect gravity, Earth’s acceleration due to gravity, mass, neap tide, spring tide, gravitational tides , inertial tides . PRACTICE: ASSIGNMENTS: NOTES:

  16. April 04, 2012 ESSENTIAL QUESTION: What is light? LEARNING OBJECTIVE: Describe the major properties of light. WARM UP: What is the wavelength of Mr. Hellmund’s favorite light wave (which has a frequency 606 x 10 12 Hz - that’s 606 THz - tera-hertz). Give answer in nm (nanometers). Show work AGENDA • Warm up • 100th anniversary of the Titanic, the re-release of the movie in 3D and Neil Degrasse Tyson – huh??? • Discussion Wien’s Law and Blackbodies – 2nd Continue part 1 • Quiz tomorrow for all (except period 2) on Light- part 1

  17. April 04, 2012 FORMATIVE ASSESSMENT: . Teacher led Questions on student’s understanding of today’s lesson. VOCABULARY: Frequency, amplitude, wavelength, wave speed, color, particle/wave duality, photo-electric effect gravity, Earth’s acceleration due to gravity, mass, neap tide, spring tide, gravitational tides , inertial tides . PRACTICE: ASSIGNMENTS: NOTES:

  18. April 03, 2012 ESSENTIAL QUESTION: What is light? LEARNING OBJECTIVE: Describe the major properties of light. WARM UP: Examine the following chart. What is graphed on the left side, how is it graphed out (in other words what are the increments and how are they “space-out”) AGENDA • Warm up • Concept Map • Discussion Wien’s Law and Blackbodies • Per 2nd: Test Part 2 (per our agreement) • Quiz tomorrow….

  19. April 03, 2012 FORMATIVE ASSESSMENT: . Teacher led Questions on student’s understanding of today’s lesson. VOCABULARY: Frequency, amplitude, wavelength, wave speed, color, particle/wave duality, photo-electric effect gravity, Earth’s acceleration due to gravity, mass, neap tide, spring tide, gravitational tides , inertial tides . PRACTICE: ASSIGNMENTS: NOTES:

  20. April 02, 2012 Happy Post-Spring Break Day! ESSENTIAL QUESTION: What is light? LEARNING OBJECTIVE: Describe the major properties of light. WARM UP: What is the electromagnetic spectrum? AGENDA • Warm up • Concept Map • Discussion Wien’s Law and Blackbodies • Per 2nd: Test Part 2 (per our agreement) • Quiz tomorrow….

  21. April 2nd, 2012 FORMATIVE ASSESSMENT: . Teacher led Questions on student’s understanding of today’s lesson. VOCABULARY: Frequency, amplitude, wavelength, wave speed, color, particle/wave duality, photo-electric effect gravity, Earth’s acceleration due to gravity, mass, neap tide, spring tide, gravitational tides , inertial tides . PRACTICE: ASSIGNMENTS: NOTES:

  22. First a general definition of mass: it is the number of particles in an object. Since a force affects an entire object , we must assume that every particle of that object has to be affected. Second, remember that in the First law we discussed an unbalanced force (the “outside” force). For there to be an outside force you need to speed an object up, slow it down or change its direction.

  23. So Newton’s Second Law tells that a force affects every particle of an object – every particle’s speed and/or direction is being affected. Mathematically if I want to know how much a crate of apples (forgive the Newtonian pun) costs, I need to know how many apples (particles) and how much each apple costs (acceleration) : Cost of the crate of apples (Force) is equal to the # of apples times the cost of each. F = (mass) (acceleration) Tomorrow’s episode: Newtons exciting Third Law

  24. Newton’s exciting Third Law – If two objects (particles, elephants, ants or planets, galaxies) touch (pairs) they both feel the touch (equal). The nerves go back to their own brains means the touch goes BACK to them (opposite). Generally if you can’t feel the force, then there is no force! SIDE NOTE: There are only a few forces ( such as gravity and magnetism) that do not have to touch – these are called non-contact forces – (forces over a distance) SO all forces come in pairs that are opposite and equal.

  25. View down on to the North Pole

  26. Gravitational Effects – Mass & Distance

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