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Reading Comprehension Worksheets
Solar System
The Rocky Planets

Solar System
Solar System


The Rocky Planets
Print The Rocky Planets Reading Comprehension with Fifth Grade Work

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Print The Rocky Planets Reading Comprehension

Reading Level
     edHelper's suggested reading level:   high interest, readability grades 5 to 7
     Flesch-Kincaid grade level:   5.12

Vocabulary
     challenging words:    tectonic, system, hemisphere, radius, provides, totally, rotation, trapping, atmosphere, orbit, solar, highly, volcanic, mass, outer, opposite
     content words:    But Venus


The Rocky Planets
By Patti Hutchison
  

1     Our solar system is made up of mostly empty space. It contains the sun, the planets and their moons, and other bodies such as comets and asteroids. But each of these is much smaller than the space between them. Scientists believe there are other bodies "out there" that have not been discovered yet.
 
2     Planets are divided into two categories. There are the "rocky" planets and the "gas giant" planets. Rocky planets include Mercury, Venus, Earth, and Mars.
 
3     Mercury is the closest planet to the sun. It is difficult to see from Earth. Mercury is about one-third the size of Earth. It completes a trip around the sun every 88 (Earth) days. This makes it the fastest orbiting planet, moving at about 50 kilometers per second.
 
4     Mercury spins slowly on its axis, however. In two of its years (orbits) only three days pass! The length of one Mercury day is equal to about 58 Earth days.
 
5     The daytime temperature on Mercury can reach over 425 degrees Celsius. There is very little atmosphere to absorb this heat, however. The nighttime temperature goes down to about -170 degrees. This is the largest temperature difference of all the planets in our solar system.
 
6     The surface of Mercury looks almost like our Moon's surface. There are many craters caused by collisions with meteoroids and comets. There are some areas of smooth surface. In some places there are tall, sharp cliffs. Mercury's iron core has a radius of about 1800 kilometers. It is surrounded by an outer shell that is only about 500 kilometers thick.
 
7     Next in line is Venus. Venus is very similar to Earth. The two planets have about the same size and mass. But Venus does not look blue, as Earth does. Venus has no ocean. It is covered with a thick mass of clouds. The clouds spin very fast, trapping surface heat. This makes the surface temperatures very hot and the surface pressure very high.
 
8     Venus revolves around the sun once every 225 (Earth) days. It takes 243 Earth days for it to make one rotation on its axis. Venus spins in the opposite direction, compared to Earth. If you lived on Venus, the sun would appear to rise in the west and set in the east!

Paragraphs 9 to 17:
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Solar System
             Solar System


More Lessons
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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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