Podcast
Questions and Answers
What occurs when light hits a rough surface?
What occurs when light hits a rough surface?
- Diffused reflection (correct)
- Absorption
- Scattering
- Regular reflection
Which factor primarily causes light to bend when entering a denser medium?
Which factor primarily causes light to bend when entering a denser medium?
- Change in frequency
- Change in speed (correct)
- Change in amplitude
- Change in temperature
What is the term for the angle at which light strikes a surface?
What is the term for the angle at which light strikes a surface?
- Angle of incidence (correct)
- Angle of reflection
- Angle of refraction
- Angle of transmission
Which example best illustrates regular reflection?
Which example best illustrates regular reflection?
How does light behave when moving from a rarer medium to a denser medium?
How does light behave when moving from a rarer medium to a denser medium?
What characterizes the difference between a denser medium and a rarer medium?
What characterizes the difference between a denser medium and a rarer medium?
Which of the following best describes refraction?
Which of the following best describes refraction?
When light travels through a vacuum, what effect does it experience?
When light travels through a vacuum, what effect does it experience?
How does light behave when traveling from air to glass?
How does light behave when traveling from air to glass?
Which of the following statements describes an optically denser medium?
Which of the following statements describes an optically denser medium?
What happens to light when it exits from glass into air?
What happens to light when it exits from glass into air?
Which statement correctly contrasts the behavior of light in denser and rarer media?
Which statement correctly contrasts the behavior of light in denser and rarer media?
Which of the following statements is true about glass and air?
Which of the following statements is true about glass and air?
What action occurs to light as it passes from an optically rare medium to an optically denser medium?
What action occurs to light as it passes from an optically rare medium to an optically denser medium?
Which factor influences the speed of light in various media?
Which factor influences the speed of light in various media?
Flashcards
Regular Reflection
Regular Reflection
Light bouncing off a smooth surface in a single direction.
Diffused Reflection
Diffused Reflection
Light bouncing off a rough surface in many directions.
Refraction
Refraction
Bending of light as it passes from one medium to another.
Angle of Incidence
Angle of Incidence
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Angle of Refraction
Angle of Refraction
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Denser Medium
Denser Medium
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Rarer Medium
Rarer Medium
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Law of Reflection
Law of Reflection
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Light speed in denser medium
Light speed in denser medium
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Optically denser
Optically denser
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Optically rarer
Optically rarer
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Refraction: Rare to Dense
Refraction: Rare to Dense
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Refraction: Dense to Rare
Refraction: Dense to Rare
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Normal Line
Normal Line
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Study Notes
Waves and Their Applications - Unit 1, Module L
- Standard MS-PS4-2: Develop and use a model to describe that waves are reflected, absorbed, or transmitted through various materials.
Day 1 - Regular & Diffused Reflection/Refraction
- Objectives: Define regular and diffused reflection, define refraction, label reflected and refracted ray diagrams, explain refraction, and compare regular and diffused reflection.
Vocabulary
- Refraction
- Angle of incidence
- Angle of refraction
- Diffused
- Regular
Starter Activity
- Compare and contrast two images showing light reflection.
Regular Reflection
- Light bounces off a smooth surface in a uniform/single direction.
- Examples include mirrors, polished metals, and calm water.
Diffused Reflection
- Light bounces off a rough surface in different/multiple directions.
- Examples include walls, wood, books, paper, and people.
Day 2 - Light Refraction
- Objectives: Draw and label refraction diagrams, define denser and rarer media, explain how light travels through denser/rarer media, and compare and contrast denser and rarer media.
Vocabulary
- Rarer media
- Denser media
Starter Activity
- Label a diagram showing refraction and reflection of light.
Previous Knowledge - Light in Different Materials
- Light travels slower in denser/thicker materials (e.g., solid > liquid > gas > vacuum).
Denser vs. Rarer Media
- Denser media: Light travels slowly, particles are closer together.
- Rarer media: Light travels faster, particles are further apart
Checking Understanding
- Refraction examples in the classroom (description of speed, direction/bend, and medium characteristics).
Optical Density
- Glass is optically denser than air.
- Light travels slower in glass than in air, causing it to bend.
Refraction Example - Light Passing From Rarer to Denser
- Light travels slower in the denser medium (e.g., glass).
- Light bends towards the normal line
Refraction Example - Light Passing From Denser to Rarer
- Light travels faster in the rarer medium (e.g., air)
- Light bends away from the normal line
Think Pair Share Activity
- Choose a correct diagram depicting light reflection and refraction between media and normal line.
Group Work - Practice Drawing (Peer Evaluation)
- Draw reflected light in provided diagrams.
- Exchange papers with another group.
- Evaluate each other's work using an answer key.
- Post work on the bulletin board.
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