How Hot Is That Star ?
Teacher's Page
Stellar temperature measurement:
A lesson on how the temperature
of a star is determined.

by Jim Lehman

©1997 The Regents of the University of California

TABLE OF CONTENTS
  • Overview
  • Unit Features
  • Purpose
  • Student Objectives
  • Procedure
  • Assessment
  • Ties to Science Framework
  • References
  • Related Lessons
  • Related Web Sites
  • Go to Student Lessons
  • Return to Lesson Summary


    Overview

        Space science students can often find it difficult to comprehend the extreme temperatures that are reported about the sun and other stars.
        Once students have been given the procedure, teachers should serve as technicians; answering individual student needs and assisting in keeping students on task. After a reasonable amount of time, students should then share their responses verbally with the group to reinforce and validate the information.

    Return to the Table of Contents


    Unit Features:

     
  • NASA Internet Data
  • On-Line Quiz
  • Interactive H-R Diagram
  • We hope this activity can serve as a guiding structure for other science topics,
    such as solar physics, thermal dynamics, structure of stars and
    telecommunications.
     

    Grade Levels: 8th-12th grade earth / space science.
    Prerequisites: General knowledge of the sun and stars
    Time Requirements - 1 hour/lesson

    Return to the Table of Contents


    Purpose:

        The purpose of these lessons are to help students gain a better understanding of the concept of solar temperature. Using up-to-date data resources available on the World Wide Web, teachers will help students learn about the Earth's closest star; the Sun. The teacher should help the student to come away from this lesson with a better understanding of some of the processes astronomers go through while doing their measurement of solar temperature.

    Return to the Table of Contents


    The objectives of these lessons are to:

    Understand sun facts and solar information.
    Discover how the temperature of a star is measured.
    Investigate the various scales used to measure temperature.
    Observe: images of the sun.
    Classify: stars according to their temperature.
    Construct a Hertzsprung-Russell diagram from interactive Java.
    Gain an understanding of the kinetic theory of matter.
    Predict stellar temperatures based on the use of an H-R Diagram.
    Compare the temperature of various stars.

    Return to the Table of Contents 


    Procedure:

     
    Teacher Component

        Teachers should familiarize themselves with all the all the pages of this unit.  You should have a very good feel for using the Internet style of teaching and confidence in their ability to browse the WWW.  You should have a mastery of the space science content and be able to assist learners in dealing with the problems they may encounter using Internet/WWW technology.

        While instructing, it is important for the teacher to focus on the objectives and not the technology.  Assist the learner to make them feel at ease with browsing and help them to see the technology is just a tool to get the information and make the learning more enjoyable and interesting.  This will help students to see the larger goal that learning about space science is fun and very worth while.

        You should guide the learners into the first lesson.  Explaining and demonstrating for the students how the lesson is designed.

        You should then break the lesson into specific time segments according to your schedule so as to allow student to explore the various links and questions found throughout each.  Once students have been given the procedure, teachers should serve as technicians; answering individual student needs and assisting in keeping students on task.  After a reasonable amount of time, students should then share their responses verbally with the group to reinforce and validate the information.
     

    There are many terrific links to this subject that we have found. See the related Web Sites below on this page.    Related Web Sites.

    Return to the Table of Contents


    Lesson Plan Assessment:

         Students will maintain an Internet Science Notebook to record their learning. Students will log answers to specific questions or concepts therein.  This should help give students a focus to their learning and provide a tool for teachers to assess the effectiveness of the instruction while using the internet-style of education.

         Students will address each of the above stated objectives as measured by their performance on the quiz found within the context of each lesson.  These on-line evaluations require Java enabled browsers.  The interactive quizzes are designed to reinforce learning and give the student a real time sense of their progress.  It provides them immediate feedback about the information they should be learning.  It may help them to understand how well they have mastered the objectives.  The quizzes can also be used effectively to help assure that students stay focused on their lesson - learning about the sun.
     
    Return to the Table of Contents 
    Lesson Plan Ties To Science Framework:

    Earth Science Standards of Learning for Virginia

    Project 2061: Benchmarks for Science Literacy: Recommendations of what all students should know and be able to do in science, mathematics, and technology by the time they graduate from high school. This nationwide study is one of the major frameworks and we include specific references from that study below for grades 5-9:


    National Science Standards
     
    The lessons are rich in the science content and procedures set forth in the National Science Standards. According to these guidelines, the fundamental abilities and concepts that underlie the science standards include the ability to identify questions that can be answered through scientific investigations:
    The physical science standards for grades 5-8 focus on the characteristic properties of substances, such as boiling and melting points; thus, the concept of temperature must be included. The Earth and Space Science content standards for grades 5-8 stress the development of an understanding of earth and the solar system as a set of closely coupled systems. "How Hot Is That Star" clearly incorporates elements of the quantitative study of the temperature of stars with associated solar physics.
    The Science and Technology Science standard for grades 5-8 suggests that students investigate simple, familiar objects (in the case of "How Hot Is That Star", it is a thermometer or digital imagery) through which students can develop powers of observation and analysis. In "How Hot Is That Star", the technology is introduced only as needed to aid a specific lesson. The students can see the value of technology in providing instruments, techniques, and communication capabilities that help them master their investigations. The pedagogy of the "How Hot Is That Star" lessons are consistent with the Science Teaching Standards that call for inquiry-based science programs.

    Return to the Table of Contents  
    Lesson Plan References:

    A useful resource for specific information about solar science is the book
    Guide to the Sun, by K. J. H. Phillips, Cambridge University Press, 1996.  It contains extensive information on the Sun, particularly current knowledge about the physics and astronomy of the Sun.  It is written at the level of popular science magazines. Mathematics has been kept to a minimum.
    Another valuable source of information on the Sun and astronomy in general is Exploring the Cosmos by L. Berman and J. C. Evans, HarperCollins College Press, 1987.  This is an introductory text that is well organized, well written, and easy to follow and understand.

    Return to the Table of Contents  
    Related Lesson Plans

    Take a Spin through the Solar System. An investigation of rotation rates of different planets and the Sun.

    Spectra From Space For grades 9-11. Meet four different astronomy satellites and do hands-on activities illustrating different spectral wavelengths. [Exploratorium]

    Electromagnetic Radiation - On Trial by Nellie Levine For grades 9-12. Gather evidence of beneficial or nefarious properties of various types of EM radiation. [CEA]


    The Sun and Its Structure. This set of notes by Nick Strobel covers: The Sun, interiors of stars, and nuclear fusion. Parts of these notes will be in outline form to aid in distinguishing various concepts. As a way to condense the text down I'll often use phrases instead of complete sentences. The vocabulary terms are italicized.

    Solar Oscillations Investigation (SOI) and Solar and Heliospheric Observatory (SOHO) data. This site presents a collection of fun educational activities. Students can explore the Sun's tangled magnetic field, its turbulent surface motions, the dramatic sunspot cycle, and even what magic happens in the solar interior, where instrumental eyes cannot penetrate.

    Solar physics on the web. This page lists web sites that contain information on the Sun. Excellent resource.

    Return to the Table of Contents


    Related Web Sites - from NASA / NOAA and other great places.

     
    This question started it all. Thank you - Mr. Sunspot !!
    This page contains answers to questions Mr Sunspot received about temperature.
    The questions Asked by Jim Meunier of Richmond, Virginia. 15 September 1996.

    Welcome to the Solar Data Analysis Center at NASA Goddard Space Flight Center in Greenbelt, Maryland USA.

    Links to sites related to Solar Physics: Solar Web Guide YOHKOH

    The Sun

    What is a spectrum?

    How is the Solar Corona Heated?

    523.7 - Sun Classified search tool for amateur astronomy

    NASA Observatorium Some Interesting Facts about the Sun

    How to get Solar data from NGDC
    The Solar and Upper Atmosphere group at NGDC has worked
    extensively to bring many datasets to you free of charge. We
    are also exploring ways to most effectively bring these data
    to you. We offer data via FTP, and through our interactive
    database, SPIDR. SPIDR will allow users to search and plot
    data. We are continually adding new and recent data to our
    on-line archives. The ability to retrieve data from SPIDR has
    just recently been added.

    ON-LINE GLOSSARY OF SOLAR-TERRESTRIAL TERMS
    Taken from the SESC Glossary of Solar-Terrestrial Terms. DOC/NOAA/ERL/SEL

    Spectral Types

    Remote Sensing Data: Space Nasa
     

    Return to the Table of Contents

    Go To The Lesson Tour Progression

    The Science Museum of Virginia

     outreach@cea.berkeley.edu for permission.
    Mail comments, questions or suggestions to: Web Curators 

    All text, images, and other resources in this page are Copyright © 1997,
    The Regents of the University of California. All rights reserved.
    This page last updated March 22, 1998