# Refraction

## When light enters a medium that causes it to change speed it also changes direction.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Refraction

by CK-12 //at grade
Refraction of light in matter and how light changes its speed and angle of refraction according to the type of medium it is travelling through.
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## 굴절

by Whakuk Lee //at grade
물질에서의 빛의 굴절, 물질의 종류에 따른 빛의 투과속도와 굴절각의 변화
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## Refraction and Lenses

by Mitsi Nessa //basic
Refraction of light in matter and how light changes its speed and angle of refraction according to the type of medium it is travelling through. What a lens is and what it does, concave and convex lenses.
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## Refraction

by Milton Huling, Ph.D. //at grade
Refraction of light in matter and how light changes its speed and angle of refraction according to the type of medium it is travelling through.
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## Refraction of Light (Gr - 3)

by Dr. Milton Huling //at grade
Refraction of light in matter and how light changes its speed and angle of refraction according to the type of medium it is travelling through.
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## Refraction of Light

by West Central 4th Grade Teachers //at grade
Refraction of light in matter and how light changes its speed and angle of refraction according to the type of medium it is travelling through.
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## How to Correctly Prepare Fish

by Samuel Tanner Reece Jones-Monaghan-Gerrard //at grade
Refraction of light in matter and how light changes its speed and angle of refraction according to the type of medium it is travelling through.
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• PLIX

## Refraction: Light Entering Water

by CK-12 //at grade
Refraction Interactive
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• Video

## Refraction

by Mark Holmstrom //at grade
A video discussing how and why refraction works. Video courtesy of Derek Owens.
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• Video

## Explaining Refraction

by CK-12 //at grade
A detailed explanation of refraction.
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• Real World Application

## Laser Eyes

by CK-12 //basic
Learn how some vision problems can be corrected by surgery performed with lasers.
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• Flashcards

## Refraction

by Ellaine Chou //basic
These flashcards are here to help you better understand middle school physical science.
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