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8 th Grade Science

8 th Grade Science. Do Now. Monday, December 3, 2012. On page __, make your weekly Do Now page. Scientists use spectroscopes to separate light into colored lines. Make a prediction about what information this tells them about stars. 8 th Grade Science. Today’s Schedule.

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8 th Grade Science

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  1. 8th Grade Science Do Now Monday, December 3, 2012 On page __, make your weekly Do Now page. Scientists use spectroscopes to separate light into colored lines. Make a prediction about what information this tells them about stars.

  2. 8th Grade Science Today’s Schedule Monday, December 3, 2012 Do Now Fingerprinting Stars Analysis Questions Essential Question Vocabulary How do we learn about the components of our universe? How does science explain the origin of the universe? What are the differences/similarities between how science, religion, art, historians explain the origins of the universe? Universe Stars Nebulae Galaxies Herztsprung-Russel diagram Electromagnetic Spectrum

  3. 8th Grade Science Today we will… Monday, December 3, 2012 8.8(A) describe components of the universe, including stars, nebulae, and galaxies, and use models such as the Hertsprung-Russell diagram for classification 8.8(E) research how scientific data are used as evidence to develop scientific theories to describe the origin of the universe

  4. 8th Grade Science Fingerprinting Stars Monday, December 3, 2012 • Compare the strips of elements to the Fingersprints of the Stars to discover what each star is comprised of. • Record observations on the handout. • Use the Periodic Table to identify the atomic number and mass for each element.

  5. 8th Grade Science Analysis Questions Monday, December 3, 2012 • What elements are found in all five stars? • Why do you think these elements are found in all five stars? Think about their atomic structure and placement on the Periodic Table. • Do any of the stars contain all eight of the given elements? • Which of the stars do you think is the oldest?

  6. 8th Grade Science Do Now Tuesday, December 4, 2012 Complete the Anticipation Guide and then tape/glue it on page __.

  7. 8th Grade Science Today’s Schedule Tuesday, December 4, 2012 Do Now Constructing HR Diagram Reading: HR Diagram Finish Anticipation Guide Essential Question Vocabulary How do we learn about the components of our universe? How does science explain the origin of the universe? What are the differences/similarities between how science, religion, art, historians explain the origins of the universe? Universe Stars Nebulae Galaxies Herztsprung-Russel diagram Electromagnetic Spectrum

  8. 8th Grade Science Today we will… Tuesday, December 4, 2012 8.8(A) describe components of the universe, including stars, nebulae, and galaxies, and use models such as the Hertsprung-Russell diagram for classification 8.8(E) research how scientific data are used as evidence to develop scientific theories to describe the origin of the universe

  9. 8th Grade Science Constructing HR Diagram Tuesday, December 4, 2012 • Construct an HR Diagram using the materials at your table. • Record the completed diagram on page __. Make sure you include the labels for each axis.

  10. 8th Grade Science Reading Tuesday, December 4, 2012 • Read: HR Diagram • Use the handout to record the 4 types of stars, the relationship of temperatures and brightness, and location.

  11. 8th Grade Science Finish Anticipation Guide Tuesday, December 4, 2012 Finish the Anticipation Guide.

  12. 8th Grade Science Do Now Wednesday & Thursday, December 5 & 6, 2012 On page __, describe what HR diagrams are and what they measure as if you were talking to a third grader.

  13. 8th Grade Science Do Now Wednesday & Thursday, December 5 & 6, 2012 ALTERNATE (Grade Level) Read: HR Diagrams (from Tuesday) Using the reading, complete the handout.

  14. 8th Grade Science Do Now Wednesday & Thursday, December 5 & 6, 2012 ALTERNATE (Pre-AP) Read: HR Diagrams (from Tuesday) Create the table below on page ____ and, using the reading, complete the table.

  15. 8th Grade Science Today’s Schedule Wednesday & Thursday, December 5 & 6, 2012 Do Now BrainPop Video: Star Cycle Life Cycle of a Star Lab: Black Holes and Beyond BrainPop Video: Black Holes Comic Strip White Board Review Essential Question Vocabulary How do we learn about the components of our universe? How does science explain the origin of the universe? What are the differences/similarities between how science, religion, art, historians explain the origins of the universe? Universe Stars Nebulae Galaxies Herztsprung-Russel diagram Electromagnetic Spectrum

  16. 8th Grade Science Today we will… Wednesday & Thursday, December 5 & 6, 2012 8.8(A) describe components of the universe, including stars, nebulae, and galaxies, and use models such as the Hertsprung-Russell diagram for classification 8.8(E) research how scientific data are used as evidence to develop scientific theories to describe the origin of the universe

  17. 8th Grade Science Video: Star Cycle Wednesday & Thursday, December 5 & 6, 2012 Life Cycle of a Star

  18. 8th Grade Science Lab Wednesday & Thursday, December 5 & 6, 2012 • Create the table below on page ___ of you INB. • Formulas: Circumference = 2πr • Volume = 4/3 πr3 • Density = m/V • π = 3.14

  19. 8th Grade Science Lab Wednesday & Thursday, December 5 & 6, 2012 • TRIAL 1 • Inflate a balloon to about 45cm in circumference. • Cover the balloon in aluminum foil to make your “star”. • Measure your “star” three times at three different angles and record the average under Trial 1. • Place your “star” on the triple beam balance to determine the mass. Record under Trial 1.

  20. 8th Grade Science Lab Wednesday & Thursday, December 5 & 6, 2012 • TRIAL 2 • Using a push-pin, carefully pop your “star” without crushing the foil. • Carefully crush the “star” so that it is SLIGHTLY smaller than its original volume. • Measure and record the circumference of the “star” three times at three different angles. Record this under Trial 2. • Measure the mass of the “star” and record in under Trial 2.

  21. 8th Grade Science Lab Wednesday & Thursday, December 5 & 6, 2012 • TRIAL 3 • Crush your “star” SLIGHTLY once again so that it is not quite completely crushed. • Measure and record the circumference of the “star” three times at three different angles. Record this under Trial 3. • Measure the mass of the “star” and record in under Trial 3.

  22. 8th Grade Science Lab Wednesday & Thursday, December 5 & 6, 2012 • TRIAL 4 • Crush your “star” one last time so that it is now as compact as possible. • Measure and record the circumference of the “star” three times at three different angles. Record this under Trial 3. • Measure the mass of the “star” and record in under Trial 3.

  23. 8th Grade Science Lab – Questions Wednesday & Thursday, December 5 & 6, 2012 Answer the questions on the handout and tape/glue it on page ___.

  24. 8th Grade Science Video: Black Holes Wednesday & Thursday, December 5 & 6, 2012 Black Holes Video

  25. 8th Grade Science Comic Strip Wednesday & Thursday, December 5 & 6, 2012 Create a comic strip showing the life cycle of a star. Your comic strip must include the following terms: Main Sequence Red Giant White Dwarf Black Hole Supergiant HR Diagram

  26. 8th Grade Science White Board Review Wednesday & Thursday, December 5 & 6, 2012 White Board Review

  27. 8th Grade Science Do Now Friday, December 7, 2012 • On page __, answer the following questions. • Describe the temperature and brightness of Giants, according the to HR Diagram. • What is the name of the star group where a star spends the majority of its life?

  28. 8th Grade Science Today’s Schedule Friday, December 7, 2012 Do Now Finish Black Hole Lab White Board Review Essential Question Vocabulary How do we learn about the components of our universe? How does science explain the origin of the universe? What are the differences/similarities between how science, religion, art, historians explain the origins of the universe? Universe Stars Nebulae Galaxies Herztsprung-Russel diagram Electromagnetic Spectrum

  29. 8th Grade Science Today we will… Friday, December 7, 2012 8.8(A) describe components of the universe, including stars, nebulae, and galaxies, and use models such as the Hertsprung-Russell diagram for classification 8.8(E) research how scientific data are used as evidence to develop scientific theories to describe the origin of the universe

  30. 8th Grade Science Finish Black Hole Lab Friday, December 7, 2012 Complete the Conclusion Questions. Black Holes Video

  31. 8th Grade Science White Board Review Friday, December 7, 2012 1. Describe the relationship between surface temperature and brightness of stars in the main sequence?

  32. 8th Grade Science White Board Review Friday, December 7, 2012 2. Using the HR Diagram, describe the temperature and magnitude (brightness) of Betelgeuse.

  33. 8th Grade Science White Board Review Friday, December 7, 2012 3. Where do black holes come from? Astronomers have no idea. Astronomers think that massive stars exploded and created them. Astronomers think that stars like our Sun exploded and created them. There is no evidence that black holes are real.

  34. 8th Grade Science White Board Review Friday, December 7, 2012 • 4. What types of celestial objects are seen in the picture below? • Planets and galaxies • Planets and black holes • Stars and black holes • Stars and galaxies

  35. 8th Grade Science White Board Review Friday, December 7, 2012 • As a star collapses and creates a black hole, the mass of the star stays the same, but the volume decreases. What effect does the change in volume have on the density of the black hole? • The density increases. • The density decreases. • The density stays the same. • There is no way to keep the mass the same and change the volume.

  36. 8th Grade Science White Board Review Friday, December 7, 2012 • 6. If a star has a low surface temperature and is considered very dim, where would you expect it to be located on the Herztsprung-Russell diagram? • In the lower, right corner. • In the upper, right corner. • In the upper, left corner. • In the main sequence.

  37. 8th Grade Science White Board Review Friday, December 7, 2012 • 7. In the HR diagram, massive stars tend to be either blue or white in color. What does this tell us about these stars? • These stars have low surface temperatures. • These stars are very dim stars. • These stars are not in the Main Sequence. • These stars have high surface temperatures.

  38. 8th Grade Science White Board Review Friday, December 7, 2012 8. What does “light-year” mean?

  39. 8th Grade Science White Board Review Friday, December 7, 2012 • 9. Ultraviolet, x-ray, visible, and microwave are all members of the… • Periodic Table. • Tools used by medical professionals. • Electromagnetic (EM) spectrum. • Elements of the sun.

  40. 8th Grade Science White Board Review Friday, December 7, 2012 • 10. When would an astronomer want to use light-years for the measurement? • Calculating the time it takes sunlight to travel from the sun to Earth. • Calculating the time it takes to travel across the galaxy. • Describing the distance between stars. • Describing the distance between the Earth and the Sun.

  41. 8th Grade Science White Board Review Friday, December 7, 2012 11. What group of stars does the Sun belong to?

  42. 8th Grade Science White Board Review Friday, December 7, 2012 Spectral Data for Element A 12. Based on the Spectral Data for Element A, which of the following stars contains Element A? a) b) c) d)

  43. 8th Grade Science QUIZ Friday, December 7, 2012 Read and re-read the passage. Underline the question Bubble important words Identify the key idea, write it in margin. Eliminate the wrong answers Select the correct answer ✓ predator/prey interactions

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