Download Absolute vs Apparent Magnitude

Research Earth Science Agenda
November 21, Monday:
A Day
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Be sure your name is on your CH#28 vocabulary diagrams/pictures (HW) and pass it to the
FRONT of your row/column IF you did not do so last class
Take out your agenda and HW from last class AND NOV 11th (H-R Diagram worksheet)
SECOND BLOCK:
Take out your “What’s in a Color LAB from LAST week (Fri, Nov 11)
TAKE OUT YOUR GIZMO LAB
WARM-UPS:
1. Identify the major stages in the life cycle of DWARF stars (like the sun)
a. How do the stages differ from the life cycles of MASSIVE and MOST MASSIVE stars?
2. REVIEW: Sketch the HR diagram and label the following:
a. Axes
b. Main sequence (and what types of stars are located here)
c. White dwarfs
d. Supergiants
e. Giants
3. QUESTIONS ON THE TEST REVIEW?
OBJECTIVES:
Stars, Galaxies, and the Universe:
H-R Diagram & Stellar Life Cycles
SECOND BLOCK:
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COMPLETE THE “What’s in a Color” Lab
a. You need to work efficiently!
2. H-R Diagram REVIEW
3. NOTES:
a. LIFE CYCLES of stars (Agenda from last class – the 15th)
i. REVIEW the LIFE CYCLE OF STARS worksheet (HW)
b. ABSOLUTE VS. APPARENT MAGNITUDE (Remember the ExC-ELL vocab)
c. DISTANCES IN SPACE!
HOMEWORK
1. REVIEW the NOTES from today
2. REVIEW the section on constellations in your text book!!!
3. WORK ON YOUR CH#28 TEST REVIEW!
4. QUIZ Corrections!! DO THE CORRECTIONS FOR BOTH QUIZZES!
a. Use your format (WRITE THE COMPLETE QUESTION AND COMPLETE ANSWER TO ALL
MISSED RESPONSES!!! USE A SEPARATE SHEET OF PAPER
CH #28 Test Review
Diagram and label a Wave. Include the following:
a. Crest
b. Trough
c. Wavelength
2. What is the relationship between wavelength and wave frequency?
3. Diagram and label the electromagnetic spectrum from the longest to the shortest wavelengths ()
a. Within the electromagnetic spectrum, label the visible-light spectrum (longest to shortest )
4. Identify and describe the 3 types of visible spectra
a. Identify the materials that emit each type of spectra
b. EXPLAIN how visible spectra are used in astronomy
c. Identify and describe the instrument used for spectral analysis
5. Identify and describe the 3 ways to determine brightness of stars
a. For Apparent and Absolute magnitude stars, describe the difference between consecutive
magnitudes and the significance of the values.
6. Know the relationship among surface temperature, color, and brightness of stars
a. What characteristics of stars determine absolute magnitude?
b. What characteristics of stars determine apparent magnitude?
7. Diagram and label the H-R Diagram: Know the following locations:
a. Dwarf stars
b. Main sequence stars
c. White dwarfs
d. Giants
e. Supergiants
f. Hottest, coolest, brightest, dimmest stars
g. Colors associated with stars on the H-R Diagram
8. Know the full name of the H-R Diagram
9. Explain the relationship shown by the H-R Diagram (star chart)
10. Differentiate among solar system, star system, constellation, and galaxy
11. Differentiate between circumpolar and seasonal constellations
a. EXPLAIN why circumpolar constellations are always visible at night and why seasonal
constellations change
b. Identify the major asterisms located in:
i. Ursa Major
ii. Ursa Minor
12. Relationship between Polaris and latitude on Earth
13. Apparent vs. real motion of stars/constellations
14. Know the life-cycle of dwarf, massive and most massive stars
a. Explain the difference
b. Explain the forces that create EACH stage in the cycle
15. BRIEFLY describe the events from the Big Bang to the present
a. How is the universe changing today?
b. Understand that background radiation supports the beginning of the Universe was an explosion
c. Understand that red-shift supports the expansion theory of the universe
d. Age of the universe – about 14 billion yrs. old
e. Age of Earth/Solar System/Sun
16. Know the 3 types of galaxies (by shape)
a. The name of our galaxy and the closest galaxy
i. What type of galaxies are these?
Diagram interpretations:
1. Determine stars that are approaching, receding from, or moving parallel to Earth from dark-line spectra
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3.
Apparent and actual movement of stars
Determine stellar composition based on absorption & emission spectra comparisons.
Absolute vs Apparent Magnitude
Luminosity =
Magnitude =
VALUES:
Factor of 2.5:
Absolute vs Apparent
Parsec =
Light year =
10 parsecs =
Absolute Magnitude (luminosity) is dependent on these characteristics:
Complete the VENN DiagraM
Absolute
Magnitude
Apparent Magnitude
Absolute vs Apparent Magnitude
TAKE AWAY:
With your group, identify how the following relates to Absolute/Apparent Magnitudes of stars
These stellar characteristics determine Stellar Magnitudes:
Factor of 2.5
True brightness
Luminosity
High negative numbers
Absolute magnitude of 6
-25.6
10 parsecs