Worksheets and No Prep Teaching Resources
Worksheets and No Prep Teaching Resources
Reading Comprehension Worksheets
Space and Stars
The Life Cycle of a Star

Space and Stars
Space and Stars


The Life Cycle of a Star
Print The Life Cycle of a Star Reading Comprehension with Sixth Grade Work

Print The Life Cycle of a Star Reading Comprehension


Reading Level
     edHelper's suggested reading level:   grades 6 to 8
     Flesch-Kincaid grade level:   7.09

Vocabulary
     challenging words:    chromium, fast-spinning, protostar, silicon, neon, radiation, supernova, magnesium, nuclear, nebula, supergiant, vast, fusion, atom, sequence, fuse


The Life Cycle of a Star
By Cindy Grigg
  

1     Stars are born in nebulae, vast clouds of dust and gas in space. Some of the gas in a nebula is hydrogen gas. Over millions of years, gravity causes the hydrogen gas to collect in a cloud. As more and more gas is pulled into the cloud, it begins to spin. As the cloud spins, atoms of hydrogen gas bump into one another. The faster the gas spins, the more the atoms bump together. The temperature of the spinning cloud rises.
 
2     When the temperature reaches ten million degrees Celsius, a chemical change called nuclear fusion begins to take place. In this change, two atoms of hydrogen gas combine to form an atom of helium gas. The gas in the nebula begins to glow. This is the first step in the life cycle of a star. It is called a protostar. This chemical change gives off a large amount of energy in the form of heat. This causes the nebula to break up into a cluster of many baby stars. The new stars give off heat and light from the nuclear fusion of hydrogen atoms.
 
3     After a star forms, it is in its main life period called the main sequence period. A main sequence star lives and shines fairly steadily for millions of years or more. Stars with greater mass have hotter temperatures and usually shorter lives. When the star's supply of hydrogen is used up, it begins to convert helium into oxygen and carbon. If the star is massive enough, it will continue until it converts carbon and oxygen into neon, sodium, magnesium, sulfur, and silicon. Eventually, these elements are transformed into calcium, iron, nickel, chromium, copper, and others until iron is formed.

Paragraphs 4 to 7:
For the complete story with questions: click here for printable



Weekly Reading Books

          Create Weekly Reading Books

Prepare for an entire week at once!


Feedback on The Life Cycle of a Star
Leave your feedback on The Life Cycle of a Star  (use this link if you found an error in the story)



Space and Stars
             Space and Stars


Science
             Science


    Careers in Science  
 
    Caring for Earth  
 
    Clouds  
 
    Dinosaurs  
 
    Earth's Land  
 
    Earth  
 
    Earthquakes  
 
    Electricity  
 
    Energy  
 
    Erosion  
 
    Food Pyramid  
 
    Food Webs and Food Chain  
 
    Forces and Motion  
 
    Fossils  
 
    Health and Nutrition  
 
    How Things Work  
 
    Landforms  
 
    Life Science  
 
    Light  
 
    Magnets  
 
    Matter  
 
 
    Moon  
 
    Natural Disasters  
 
    Photosynthesis  
 
    Plant and Animal Cells  
 
    Plants  
 
    Rocks and Minerals  
 
    Science Process Skills  
 
    Scientific Notation  
 
    Seasons  
 
    Simple Machines  
 
    Soil  
 
    Solar System  
 
    Sound  
 
    Space and Stars  
 
    Sun  
 
    Tsunami  
 
    Volcanoes  
 
    Water Cycle  
 
    Water  
 
    Weather  
 



Copyright © 2017 edHelper