presentaciónluz carmen ángela
TRANSCRIPT
UNIT: 9 LIGHT
Bodies, light and heatBy:
Carmen Vispo WelzenbachAngela Martinez Ros
1. LIGHT
We need light to see:
Light moves in a straight line.
Light moves very fast.
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
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
MIXTURE Three mixtures of the primary colours
Y + B = GR + B = VY + R = O
1.BODIES AND LIGHT
Transparent,translucent and opaque objects
Luminous and non-luminous bodies
Natural luminous bodies
Artificial luminous bodies
2.OBJECTSTransparent
Translucent
Opaque
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
1.HEAT Heat goes from one body to another
Conductors and insulators
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
3.CONDUCTORS AND INSULATORS
Conductors (iron, aluminium and glass) Insulators (wood and plastic)
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
THE END