Worksheets and No Prep Teaching Resources
Worksheets and No Prep Teaching Resources
Reading Comprehension Worksheets
How Things Work
How Do Telescopes Work?

How Things Work
How Things Work


How Do Telescopes Work?
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Print How Do Telescopes Work? Reading Comprehension


A Short Reader

Reading Level
     edHelper's suggested reading level:   grades 4 to 6
     Flesch-Kincaid grade level:   5.93

Vocabulary
     challenging words:    focal, distinct, opening, funnel, focus, universe, pointed, magnify, medium, people, works, telescope, lines, separate, microscope, waves


How Do Telescopes Work?
By Cindy Grigg
  

1     When people look at things that are far away, they use telescopes. Telescopes were first invented in the early 1600s. The first telescopes were long tubes with glass lenses inside.
 
2     Here's why telescopes make things look bigger. Light moves in straight lines. When it passes through a different medium - like when light passing through air moves through water or glass - it slows down or speeds up a little. The path of the light bends. Lenses are curved pieces of glass. Lenses can focus the light and make things look bigger (telescope) or smaller (microscope).
 
3     A telescope does three things. First, a telescope collects light. The more light it catches, the brighter the light is, and the better a person can see. It works sort of like a funnel. Light goes into the large opening and is funneled into a smaller opening. A telescope's size is measured by the size of its main light-collecting lens or mirror.

Paragraphs 4 to 5:
For the complete story with questions: click here for printable



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How Things Work
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