unit 5...magnifying glass—a convex lens that makes things look larger when they are held close to...
TRANSCRIPT
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Skills StrandGrade 3
Core Knowledge Language Arts®
Unit 5Vocabulary Cards
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source
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source— a starting place, where something comes from (sources)
Unit 5: Chapter 1
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energy
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energy—a supply of power
Unit 5: Chapter 1
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vacuum
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vacuum—emptiness
Unit 5: Chapter 1
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speed
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speed—how fast or slow something moves
Unit 5: Chapter 1
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wave
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wave—an amount of energy that moves in a rippling pattern like a wave (waves)
Unit 5: Chapter 1
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wavelength
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wavelength—how long a wave is, the distance from the top of one wave to the top of the next wave (wavelengths)Unit 5: Chapter 1
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white light
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white light—light that is made up of waves with different wavelengths and includes all the colors we can seeUnit 5: Chapter 1
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electricity
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electricity—energy carried over wires (electric)
Unit 5: Chapter 1
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shadow
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shadow—a dark shape or outline of something that is made when light is blocked (shadows)Unit 5: Chapter 2
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transparent
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transparent—clear, see-through so light gets through
Unit 5: Chapter 2
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skylight
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skylight—a window in a ceiling or roof that lets in light
Unit 5: Chapter 2
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opaque
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opaque—not clear, blocking all light so that none gets through
Unit 5: Chapter 2
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absorb
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absorb—to take in or soak up (absorbed)
Unit 5: Chapter 2
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project
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project—to cause light to appear on a surface (projected, projector)
Unit 5: Chapter 2
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mirror
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mirror—a shiny surface that reflects light (mirrors)
Unit 5: Chapter 3
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surface
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surface—the outside layer of something
Unit 5: Chapter 3
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reflect
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reflect—to throw back light, heat, or sound from a surface (reflections, reflects, reflected, reflection)Unit 5: Chapter 3
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silvery
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silvery—shiny or silver in color
Unit 5: Chapter 3
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plane
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plane—a more or less flat surface
Unit 5: Chapter 3
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kaleidoscope
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kaleidoscope—a tube with plane mirrors and pieces of colored glass that you hold up to the light and rotate to make colorful patternsUnit 5: Chapter 3
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concave
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concave—curved inward, like a spoon
Unit 5: Chapter 3
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convex
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convex—curved outward
Unit 5: Chapter 3
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curve
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curve—to bend (curved, curves)
Unit 5: Chapter 3
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distort
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distort—to twist out of normal shape (distorted)
Unit 5: Chapter 3
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refract
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refract—the appearance of light bending when it moves from one medium to another (refraction, refracting, refracts)Unit 5: Chapter 4
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lens
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lens—a clear piece of curved glass or plastic that is used to make things look clearer, larger, or smaller (lenses)Unit 5: Chapter 4
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dense
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dense—thick, heavy (denser)
Unit 5: Chapter 4
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angle
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angle—the space formed when two lines or surfaces meet
Unit 5: Chapter 4
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magnify
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magnify—to make something look larger or sound louder (magnified, magnifies)Unit 5: Chapter 4
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magnifying glass
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magnifying glass—a convex lens that makes things look larger when they are held close to the lensUnit 5: Chapter 4
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security
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security—protection from danger
Unit 5: Chapter 4
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camera
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camera—an instrument for taking photographs (cameras)
Unit 5: Chapter 4
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prism
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prism—a wedge-shaped piece of transparent glass that breaks up light into all the colors of the spectrumUnit 5: Chapter 5
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spectrum
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spectrum—the distribution of all the colors that make up the light we see
Unit 5: Chapter 5
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indigo
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indigo—a dark purplish-blue color
Unit 5: Chapter 5
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material
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material—cloth or fabric
Unit 5: Chapter 5
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ultraviolet
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ultraviolet—short, invisible light waves, beyond violet on the spectrum, that cause sunburnUnit 5: Chapter 5
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infrared
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infrared—long light waves, beyond red on the spectrum, that can only be seen with special instrumentsUnit 5: Chapter 5
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remote control
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remote control—a device that uses infrared waves to operate equipment, such as a TV, from a distanceUnit 5: Chapter 5
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vocal cords
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vocal cords—muscles that produce sound when air passes over them
Unit 5: Chapter 6
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sound wave
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sound wave—a series of vibrations that can be heard (sound waves)
Unit 5: Chapter 6
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medium
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medium—a substance that light or sound can travel through, like a solid, a liquid, or a gas (mediums)Unit 5: Chapter 6
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pitch
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pitch—how high or low a sound is (pitched)
Unit 5: Chapter 7
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volume
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volume—the loudness or intensity of a sound
Unit 5: Chapter 7
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intense
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intense—strong (intensity)
Unit 5: Chapter 7
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damage
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damage—hurt, harm
Unit 5: Chapter 7
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lung
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lung—one of a pair of organs that allows animals to breathe by filling with air (lungs)Unit 5: Chapter 8
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trachea
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trachea—a tube that air passes through going to and from the lungs; windpipe
Unit 5: Chapter 8
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larynx
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larynx—the organ in your throat that holds the vocal cords and makes it possible to speak; voice boxUnit 5: Chapter 8
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automatically
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automatically—operating on its own without direct control
Unit 5: Chapter 8
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photograph
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photograph—a picture made with a camera (photography, photographs, photos, photo)Unit 5: Chapter 9
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Aristotle
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Aristotle—a Greek philosopher who made notes about how light acts; His notes later helped inventors make cameras.Unit 5: Chapter 9
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heliograph
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heliograph—a type of early photograph made by mixing coal and other natural elements that are then left in the sun to make the images; They took a long time to appear and disappeared quickly. (heliographs)Unit 5: Chapter 9
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invent
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invent—to make something new that no one else has ever made (invented, inventor, inventors, invention)Unit 5: Chapter 9
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daguerreotype
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daguerreotype—a type of early photograph invented by Daguerre; It appeared in less than 30 minutes and did not disappear as quickly as heliographs. (daguerreotypes)Unit 5: Chapter 9
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hearing trumpet
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hearing trumpet—a cone-shaped tool that helps a person hear better by placing the small end in one earUnit 5: Chapter 10
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professor
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professor—a college teacher
Unit 5: Chapter 10
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Visible Speech
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Visible Speech—a system of communication used by deaf people in which symbols represent soundsUnit 5: Chapter 10
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symbol
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symbol—an object or picture that stands for something (symbols)
Unit 5: Chapter 10
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inspiration
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inspiration—something that gives a person an idea about what to do or createUnit 5: Chapter 10
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telegraph
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telegraph—a tool for communicating by sending electrical signals by wire or radioUnit 5: Chapter 11
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Morse Code
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Morse Code—a way of communicating with dots and dashes using the telegraph
Unit 5: Chapter 11
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electric current
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electric current—the flow of electricity
Unit 5: Chapter 11
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transmit
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transmit—to move or send something from one place to another (transmission)Unit 5: Chapter 11
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discovery
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discovery—an event in which someone finds or learns something for the first timeUnit 5: Chapter 11
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scarlet fever
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scarlet fever—a disease that causes a fever, sore throat, and a red rash
Unit 5: Chapter 12
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patent
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patent—the rights to make and sell something (patents)
Unit 5: Chapter 12
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phonograph
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phonograph—an instrument that reproduces sounds that have been recorded on a grooved diskUnit 5: Chapter 12
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incandescent
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incandescent—glowing
Unit 5: Chapter 12
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kinetoscope
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kinetoscope—an early machine for showing movies
Unit 5: Chapter 12
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microphone
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microphone—an instrument for recording sound or making sound louderUnit 5: Chapter 12