Term
| How do we know that light is not rays coming from our eyes? |
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Definition
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Term
| What was the first (somewhat) accurate recording of the spee dof light? |
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Definition
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Term
| How did Roemer record the speed of light? |
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Definition
| Jupiter's moon Io, used naturally occuring thing to time |
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Term
| What American recorded the speed of light? (earning him a noble prize) |
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Definition
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Term
| What shape were Michelson's mirror? |
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Definition
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Term
| How many turns were made before Michelson's mirror reflected light? |
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Definition
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Term
| Does the speed of light change or the length of the meter change? |
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Definition
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Term
| What is the speed of light? |
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Definition
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Term
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Definition
| consists of a varying electric and magnetic field. |
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Term
| Label the electromagnetic spectrum from longest to shortest wavelength. (lowest to highest frequency) |
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Definition
| radio, microwave, infared, visible, ultraviolet, x-ray, gamma |
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Term
| What is an example of Radio waves? |
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Definition
-astonomy
-communication (AM, shortwave, TV, FM) |
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Term
| What is an issue with Radio waves? |
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Definition
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Term
| Are all types of communication radio waves? |
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Definition
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Term
| What are examples of microwaves? |
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Definition
-Radar(airport, police, weather stations)
-cooking
-Cell phones |
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Term
| How are microwaves cooking waves made? |
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Definition
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Term
| Can microwaves have bad human side effects? |
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Definition
| no, higher energy but not good research to show for it. |
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Term
| Can cameras detect radio waves? |
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Definition
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Term
| Can cameras detect Microwaves? |
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Definition
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Term
| Examples of infared waves |
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Definition
-TV remotes/emote keyboard
-Heating/drying
-Night Vision |
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Term
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Definition
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Term
| What animal can see infared? |
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Definition
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Term
| Can cameras detect infared? |
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Definition
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Term
| What are examples of uses of visible light? |
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Definition
-seeing
-photography
-photosynthesis |
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Term
| Why do plants appear green? |
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Definition
| During photosynthesis, thats the only color they don't need, so it bounces off |
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Term
| Can camera's see visible light? |
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Definition
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Term
| Can camera's see ultraviolet light? |
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Definition
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Term
| What does ultraviolet cause? |
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Definition
| skin cancer, cataracts, etc. |
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Term
| What can ultraviolet be catagorized into? |
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Definition
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Term
| What are some uses of ultraviolet? |
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Definition
-Sterilize food (meat, strawberries) and surfaces
-Run solar cells
-set dental fillings |
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Term
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Definition
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Term
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Definition
| they go through different materials differently. |
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Term
| What are x-rays used for? |
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Definition
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Term
| Can cameras see gamma radiation? |
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Definition
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Term
| What strange way were x-rays used for? |
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Definition
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Term
| What is gamma radiation used for? |
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Definition
-medical imaging
-Cancer treatment
-a form of nuclear radiation |
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Term
| How is alpha radiation stopped? |
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Definition
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Term
| How is beta radiation stopped? |
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Definition
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Term
| How is gamma radiation stopped? |
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Definition
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Term
| Which form of radiation has nuclear origin? |
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Definition
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Term
| What animal can tell if light is polarized? |
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Definition
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Term
| Are light waves longitudinal or transverse? |
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Definition
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Term
| How do we know light waves are transverse? |
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Definition
| The charged particles vibrate in a direction perpeniculat to the direction of travel of the light wave |
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Term
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Definition
| a collection of waves from charfes vibrating in many directions. (transverse along all axis) |
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