Worksheets and No Prep Teaching Resources
Worksheets and No Prep Teaching Resources
Reading Comprehension Worksheets
Volcanoes
Volcanoes and How They Form

Volcanoes
Volcanoes


Volcanoes and How They Form
Print Volcanoes and How They Form Reading Comprehension with Third Grade Work

Print Volcanoes and How They Form Reading Comprehension with Fourth Grade Work

Print Volcanoes and How They Form Reading Comprehension

Reading Level
     edHelper's suggested reading level:   grades 3 to 4
     Flesch-Kincaid grade level:   4.66

Vocabulary
     challenging words:    basalt, fiftieth, origin, tends, volcanic, understand, granite, lower, outer, form, underground, light-colored, eruption, meets, molten, lava

Other Languages
     Spanish: Los volcanes y cómo se forman


Volcanoes and How They Form
By Brenda B. Covert
  

1     To understand how volcanoes form, you need to know about the layers within the Earth. The outer layer, the crust, has two parts. They are continental and oceanic. The continental crust is mostly granite, which is a light-colored rock with large crystals. This layer forms the continents. The oceanic crust is mostly basalt. Basalt is Earth's most common rock. It is a very hard, dark-colored rock that doesn't have any large crystals. The ocean floor is made up of mostly basalt. The Earth's crust is about 25 miles thick, on average, beneath the continents. Under the oceans the crust is, on average, about 4 miles thick.
 
2     Beneath the crust is the mantle. The deeper we go into the Earth, the hotter it gets. The mantle is where we find melted rock, called magma. No one has ever been there; they couldn't survive the heat!
 
3     Beneath the mantle is the Earth's core. Scientists believe that it is made up of mostly iron and some nickel, some molten (melted) and some solid. They believe that the innermost part of the core must be solid because it is under so much pressure. The weight of the Earth is pushing down on the inner core from every angle. The outer core is molten liquid. The core is even hotter than the magma in the mantle!

Paragraphs 4 to 6:
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 Volcanoes and How They Form
Leave your feedback on Volcanoes and How They Form   (use this link if you found an error in the story)



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  
 



Copyright © 2017 edHelper