2º ESO/UNIVERSE/OUTER SPACE Define the term light year. ]]> 1.0000000 0.0000000 0 editor 1 15 0 0 Define the term parsec. Define the term parsec.

]]> 1.0000000 0.0000000 0 editor 1 15 0 0 Describe the characteristics and features of a red giant. Describe the characteristics and features of a red giant. 1.0000000 0.0000000 0 editor 1 15 0 0 Describe the characteristics and features of a white dwarf. Describe the characteristics and features of a white dwarf. 1.0000000 0.0000000 0 editor 1 15 0 0 Describe the energy source of a star. Describe the energy source of a star.

]]> 1.0000000 0.0000000 0 editor 1 15 0 0 Describe what happens to stars as they age. Describe what happens to stars as they age. 1.0000000 0.0000000 0 editor 1 15 0 0 How much longer will our Sun continue to produce energy? How much longer will our Sun continue to produce energy? {1:MULTICHOICE:5 billion years~=5 million years~100 million years}

]]> 0.1000000 0 How stars are born? How stars are born? 1.0000000 0.0000000 0 editor 1 15 0 0 Identify and describe the stages of the Sun’s life cycle in the correct order. Identify and describe the stages of the Sun’s life cycle in the correct order. 1.0000000 0.0000000 0 editor 1 15 0 0 Lifetimes of stars range from to years Lifetimes of stars range from {1:MULTICHOICE:1000 billion years~100 years~=40000 years~1 year} to {1:MULTICHOICE:=10 billion years~100 years~400 million years~10000 year} years

]]> 0.1000000 0 star and stellar evolution

Stars and Stellar Evolution

http://amazing-space.stsci.edu/capture/stars/

http://www.geocities.com/CapeCanaveral/Launchpad/1364/Stars.html

http://btc.montana.edu/ceres/html/LifeCycle/starsbackground.htm

http://www.windows.ucar.edu/tour/link=/the_universe/Nebula.html

http://www.windows.ucar.edu/tour/link=/the_universe/Strange.html

http://www.windows.ucar.edu/tour/link=/the_universe/Galaxy.html

http://outreach.atnf.csiro.au/education/everyone/pulsars/

]]> 1.0000000 0.0000000 0 Stars and planets are made from gas and dust in a Stars and planets are made from gas and dust in a {1:MULTICHOICE:Galaxy~Quasar~Intergalactic space~=Planetary nebulae}

]]> 0.1000000 0 Stars are made mainly from the gases Stars are made mainly from the gases {1:MULTICHOICE:Nitrogen~Oxygen~=Helium~=Hydrogen~Chlorine} and {1:MULTICHOICE:Nitrogen~Oxygen~=Helium~=Hydrogen~Chlorine} 0.1000000 0 TITLE GENERAL ASTRONOMY ASTRONOMY QUIZ

You must answer the next questions using the links

GENERAL ASTRONOMY

http://starchild.gsfc.nasa.gov/docs/StarChild/questions/question19.html

]]> 1.0000000 0.0000000 0 What is a supernova? What is a supernova? 1.0000000 0.0000000 0 editor 1 15 0 0 What is an astronomical unit? What is an astronomical unit? 1.0000000 0.0000000 0 editor 1 15 0 0