John Griffiths Astro Pages

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GCSE Astronomy >  [Lesson Summary Sheets]  >  Greenwich G&T

 

Week 15 (31st January 2010)

 

· Optical instruments and types of telescoipes

 

· The Sun - an introduction

 

· Sizes of planets and stars

 

Web links

 

· The Sun Kings – excellent book on the amazing solar event of 1859

 

· Sizes of star and planets http://www.rense.com/general72/size.htm

 

 

 

Week 16 (7th February 2010)

 

· Planetarium – Secrets of the Sun

 

· The Sun

 

· Read Sun Powerpoint

 

· Link to ROG Secrets of the Sun web site

 

 

 

Week 17 (14th February 2010) Lesson taken by Tony Sizer

 

· Mid-course test

 

· The Sun - Overview

 

 

 

 

GCSE Astronomy — Lesson Summary Sheets—Year 2009/10—Greenwich G&T

 

 

Week 18 (28th February 2010)

 

· Magnitude scale – apparent magnitude (m)

 

· Measuring stars distances – the parsec (d)

 

· Absolute magnitude (M) – definition

 

· Relationship between M, m and d – Distance Modulus equation and examples – next week

 

· Star data for nearest and furthest stars

 

· Construct HR diagram from star data

 

· More about HR diagram and what it means - next week

 

 

 

Week 19 (7th March 2010)

 

· HR diagram – understanding what it means

 

· Introduction to the evolution of the Sun – a low mass star

 

· Spectroscopy – using spectroscope to view spectra of various light sources

 

· Spectrum of the Sun – Fraunhofer absorption lines of the chemical elements in the spectrum

 

· Using the HR diagram to measure distances – spectroscopic parallax

 

 

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