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 Light 38 Flashcards |
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What is the primary reason we can see objects that do not emit light? |
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Light ReflectionUnderstanding Visibility of Non-Luminous Objects
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Fill in the blank: Light travels from a light source, reflects off an object, and then enters our ___ to allow us to see the object. |
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Eyes  |
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True or False: Light travels in curved paths when it encounters an object. |
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False. Light travels in straight lines until it encounters an object. |
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What is a 'ray' in the context of light? |
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A ray is a narrow beam of light that emanates from a light source in all directions.  |
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Riddle: I travel in straight lines and can be seen from afar. Without me, darkness would reign. What am I? |
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Light  |
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Fill in the blank: The light rays emanate from a source in all directions until they encounter an ___. |
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Object  |
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Light travels in ___ lines, as seen in natural and artificial sources. |
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Straight  |
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What is an arriving ray in the context of light travel? |
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An arriving ray is a light ray traveling from the source to an object.  |
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True or False: A reflected ray is a light ray that travels directly from the source to our eyes. |
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False. A reflected ray is a light ray that bounces off an object in a different direction.  |
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Fill in the blank: In a ray diagram, arrows indicate the ___ of light travel. |
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Direction  |
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Riddle: I travel in straight lines and allow you to see objects when I bounce off them. What am I? |
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Light  |
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What happens to light rays when they encounter an object? |
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They may be absorbed, transmitted, or reflected, with reflected rays allowing us to see the object.  |
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Fill in the blank: An example of an arriving ray can be seen when light from a flashlight hits a ___ in a box. |
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Coin  |
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Fill in the blank: Mirrors have ___ surfaces that effectively reflect light. |
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Smooth, shiny  |
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True or False: The ability of a surface to reflect light is uniform across all materials. |
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False. The ability to reflect light varies depending on the properties of the surface.  |
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Riddle: I can show you a face but I am not alive. I reflect your image, clear and bright. What am I? |
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A mirror  |
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Fill in the blank: We see objects when light reflects off their ___ into our eyes. |
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Surfaces  |
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What role do mirrors play in applications such as vehicles and bathrooms? |
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Mirrors are used to help people see objects that are otherwise out of sight.  |
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Multiple Choice: Which of the following statements about reflection is true? A) Light cannot be reflected. B) Reflection is the same for all surfaces. C) Mirrors reflect light effectively. D) We see objects without any light. |
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C) Mirrors reflect light effectively.  |
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Completed! Keep practicing to master all of them. |
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