Worksheets and No Prep Teaching Resources
Worksheets and No Prep Teaching Resources
Reading Comprehension Worksheets
Earth
Isostasy

Earth
Earth


Isostasy
Print Isostasy Reading Comprehension with Fifth Grade Work

Print Isostasy Reading Comprehension with Sixth Grade Work

Print Isostasy Reading Comprehension

Reading Level
     edHelper's suggested reading level:   high interest, readability grades 5 to 6
     Flesch-Kincaid grade level:   5.69

Vocabulary
     challenging words:    isostacy, isostatic, asthenosphere, continental, tectonics, europe, response, mantle, mathematician, theory, lies, therefore, mass, downward, fluid, material
     content words:    Remember Archimedes


Isostasy
By Patti Hutchison
  

1     As he was taking a bath one day, a mathematician named Archimedes discovered something. He noticed that if you place an object in water, the water level rises. This led to Archimedes' Principle. This principle says that an object applies a force that pushes downward on the liquid. Another force pushes upward on the object that is placed in the fluid. If the object is denser than the fluid, it will sink. If the object is less dense than the fluid, it will float. If an object floats, it will, however, sink lower in the water as more mass is added to it.
 
2     Think of it this way. An iceberg floats on water. The ice is less dense than the water it is floating on. But part of the iceberg is still under water. Now, imagine that a polar bear climbs onto the iceberg. The water level will rise around the iceberg and there will be more of the iceberg under the water. Now, imagine that the polar bear gets off and swims away. The iceberg has less mass, so it will now float higher in the water. Less of its mass will be under water.
 
3     So, what does all this have to do with earth science? It helps explain earth's isostasy. Do you remember the theory of plate tectonics? This theory basically says that the crust of the earth is broken into giant pieces. These pieces float around on the partly liquid mantle (asthenosphere) below it. The crust floats because it is less dense than the mantle.

Paragraphs 4 to 8:
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 Isostasy
Leave your feedback on Isostasy   (use this link if you found an error in the story)



Earth
             Earth


More Lessons
             Special Education Science Materials for Teachers


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