Option 9.7 Lesson 2 Plenary
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9.7.2 Astrometry Lesson Plenary (a) Match the definitions to the correct word or term: ____ 1. Parallax A. The amount of energy radiated per second by a body. ____ 2. Triangulation B. A method for measuring distances to stars. ____ 3. Parsec (pc) C. The apparent shift in an object’s position caused by the observer’s motion. ____ 4. Astronomical unit (A.U.) D. ____ 5. Light year (L.Y.) E. ____ 6. Luminosity F. (b) Free response questions 1. How is the parsec defined? How big is a parsec compared with a light-year? ……………………………………………………………………………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………….. 2.
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HSC Physics Astrophysics Plenary
Transcript of Option 9.7 Lesson 2 Plenary
9.7.2 Astrometry Lesson Plenary
(a) Match the definitions to the correct word or term:
____ 1. Parallax A. The amount of energy radiated per second by a body.____ 2. Triangulation B. A method for measuring distances to stars.____ 3. Parsec (pc) C. The apparent shift in an object’s position caused by the
observer’s motion.____ 4. Astronomical unit (A.U.) D.____ 5. Light year (L.Y.) E.____ 6. Luminosity F.
(b) Free response questions
1. How is the parsec defined? How big is a parsec compared with a light-year?
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