Presentaciónluz carmen ángela
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Transcript of Presentaciónluz carmen ángela
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UNIT: 9 LIGHT
Bodies, light and heatBy:
Carmen Vispo WelzenbachAngela Martinez Ros
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1. LIGHT
We need light to see:
Light moves in a straight line.
Light moves very fast.
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2. LIGHT AND SHADOWS When light cannot travel through an object,a
shadow is formed.
The shadow of an object is always formed in the opposite side to the source of light
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3. COLOURS
The light we get from the sun is called white light
White light is a mixture of seven colours: red,orange,yellow,green,blue,indigo and violet
The primary colours are: blue red and yellow
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MIXTURE Three mixtures of the primary colours
Y + B = GR + B = VY + R = O
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1.BODIES AND LIGHT
Transparent,translucent and opaque objects
Luminous and non-luminous bodies
Natural luminous bodies
Artificial luminous bodies
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2.OBJECTSTransparent
Translucent
Opaque
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1.LUMINOUS AND NON-LUMINOUS BODIES
1) Natural luminous bodies, like the sun produce light
2) Artificial luminous bodies like candle,are man-made
3) Some objects are sources of light. We call them luminous bodies.
4) Non-luminous bodies produce no light
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1.HEAT Heat goes from one body to another
Conductors and insulators
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2.HEAT GOES FROM ONE BODY TO ANOTHER
Heat goes from hot bodies to colder bodies
GamesI. Light moves in a curved / straight lineII. Light moves very fast / very slowly
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3.CONDUCTORS AND INSULATORS
Conductors (iron, aluminium and glass) Insulators (wood and plastic)
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4.VOCABULARY Artificial : artificial Conductor: conductor Fast: rápido Heat: calor Insulator: aislante Light: luz Luminous: luminoso Natural: natural Prism: prisma Shadow: sombra Straight line: línea recta Translucent: translúcido Transparent: transparente White light: luz blanca
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THE END