The Patterns Inside a Kaleidoscope
A child holds a kaleidoscope up to the light and turns its outer end. Through the small viewing hole, bits of color seem to bloom into a many-pointed design. A slight turn makes the design shift again. How can a few small pieces create so many shapes?
The answer is reflection. In the early 1800s, Scottish scientist David Brewster studied light and developed a kaleidoscope that became popular. People had long known about reflections, but Brewster found a way to bring them together in a captivating optical instrument.
Light bouncing back
When light strikes a mirror, it bounces off instead of passing through. This bouncing is called reflection. Light from your face can bounce off a bathroom mirror and travel to your eyes, allowing you to see an image of yourself.
Inside a kaleidoscope, mirrors are set at angles to one another. Small colored objects, such as beads or pieces of colored material, sit near the far end. Light enters that end and reaches the objects and mirrors. The mirrors send light toward your eye, creating images of the colored pieces.
- captivating:
- Holding someone’s attention or interest.
- optical:
- Related to light or seeing.
- instrument:
- A tool or device made for a particular purpose.
- arrangement:
- The way things are placed in relation to one another.
- angle:
- The amount of space between two lines or surfaces that meet.
- predict:
- To say what you think will happen based on what you know.
- complex:
- Having many connected parts or details.
One passage, many ways to practice
Reading-skill questions, word work and writing prompts — all built from this text.
Main Idea
Identify the central idea and explain how important details develop it.
Context Clues
Use clues in the passage to work out what words mean. A separate printable Vocabulary worksheet is also available.
Summarize
Select, organize, and restate the most important information without adding opinion.
Purpose
Analyze what the author aims to do and how choices serve audience and purpose.
Structure
Analyze how sections and organizational choices build the text's ideas or effects.
Vocabulary
Practice words from the passage with a printable worksheet.
Writing Prompts
Use the passage as a springboard for short written responses, from personal reflection to evidence-based arguments.
Fix the Sentence
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Preview questions from this passageShowHide
- 1How can a few colored pieces create a pattern with many sections?
- 2What happens to light when it strikes a mirror?
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About this explanatory article passage for Upper Elementary
“The Patterns Inside a Kaleidoscope” is a explanatory article reading passage about Light and Reflection, written for Upper Elementary. It takes about 3 minutes to read (504 words) and comes with an interactive quiz and a printable worksheet with comprehension questions and an answer key.