Worksheets and No Prep Teaching Resources
Worksheets and No Prep Teaching Resources
Reading Comprehension Worksheets
Forces and Motion
How Things Work
How Does Your Boat Float?

Forces and Motion
Forces and Motion


How Does Your Boat Float?
Print How Does Your Boat Float? Reading Comprehension with Sixth Grade Work

Print How Does Your Boat Float? Reading Comprehension


Reading Level
     edHelper's suggested reading level:   grades 6 to 8
     Flesch-Kincaid grade level:   6.85

Vocabulary
     challenging words:    displace, buoyancy, filling, explanation, generally, density, unit, definition, mass, volume, cargo, contents, material, increase, scientist, divide


How Does Your Boat Float?
By Sharon Fabian
  

1     How does your boat float? About two thousand years ago, a Greek scientist named Archimedes figured out the answer to that question. Since then, the information has become known as Archimedes' Principle.
 
2     You might think that the explanation has a lot to do with weight. After all, heavy rocks sink, right? And light objects like feathers float. Even though that is generally true, the explanation of what makes an object float actually has more to do with density than with weight. It also has to do with another important scientific concept called buoyancy.
 
3     Density and buoyancy - exactly what do those terms mean?
 
4     Density means the mass of an object per unit of volume. It takes into account not only the weight of an object but also its size. So a block of steel will have more density than a ship made of that same amount of steel.
 
5     Buoyancy means the upward force on an object exerted by surrounding fluids. A simpler definition for buoyancy is the ability of a fluid to hold an object up. If we say that something has buoyancy, we mean that it can float.

Paragraphs 6 to 12:
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Forces and Motion
             Forces and Motion


How Things Work
             How Things Work


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