Worksheets and No Prep Teaching Resources
Worksheets and No Prep Teaching Resources
Reading Comprehension Worksheets
Volcanoes
How Volcanoes Make Islands

Volcanoes
Volcanoes


How Volcanoes Make Islands
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Print How Volcanoes Make Islands Reading Comprehension


A Short Reader

Reading Level
     edHelper's suggested reading level:   grades 3 to 5
     Flesch-Kincaid grade level:   3.88

Vocabulary
     challenging words:    jigsaw, Mauna, seamounts, tectonic, volcanic, underwater, oozes, outer, piles, everest, lava, layer, magma, liquid, mantle, core
     content words:    Mauna Kea


How Volcanoes Make Islands
By Cindy Grigg
  

1     Volcanoes are found all over Earth. Many of them are on land. Many more volcanoes are found under Earth's oceans. If an underwater volcano keeps erupting, it can rise above the ocean's surface. An island is formed. The country of Iceland formed millions of years ago from underwater volcanic eruptions.
 
2     The story of a volcanic island starts inside the Earth. Earth has a solid inner core. It's made of solid metal. It is thought to be as hot as the surface of the sun! A liquid outer core surrounds the inner core. The outer core is made of metals, too. It is liquid because it is under less pressure than the inner core. Around the outer core is the Earth's mantle. It's made of hot rock called magma. It's mostly solid, but it can flow like hot plastic. We live on the crust. It is the thin, outside layer of the Earth. The crust is in pieces like a jigsaw puzzle. They are called tectonic plates. The plates fit together. Forces caused by Earth's heat sometimes push them tighter against each other. Sometimes forces pull them apart. Sometimes there are weak spots in the crust. When plates pull apart or there is a weak spot, the mantle's hot, flowing magma oozes out.

Paragraphs 3 to 4:
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Volcanoes
             Volcanoes


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  
 



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