Lesson 1b-What is Light?

Lesson 1b-What is Light?

S I T A H W N O S S LE T A ? B

T H W G S I L plain Ex t h g i l w

ho s l e v a r t SCIENCE STARTER CREATE A VENN DIAGRAM COMPARING AND CONTRASTING TWO DIFFERENT TYPES OF WAVES YOU ARE FAMILIAR WITH WHAT IS LIGHT?

LIGHT-TYPE OF WAVE THAT CARRIES ENERGY LIGHT RAY- NARROW BEAM OF LIGHT THAT TRAVELS IN A STRAIGHT LINE BRAINPOP- LIGHT TAKE NOTES WHILE WE WATCH THE VIDEO CLIP HOW DOES LIGHT MOVE/TRAVEL? MEDIUM-MATERIAL THROUGH WHICH A WAVE TRAVELS EXAMPLE-WATER WAVE TRAVELS THROUGH A MEDIUM OF WATER

LIGHT DOES NOT NEED A MEDIUM BECAUSE IT IS AN ELECTROMAGNETIC WAVE TRAVELS IN ALL DIRECTIONS AWAY FROM THE LIGHT SOURCE LIGHT & MATTER MOST OBJECTS DO NOT GIVE OFF LIGHT TO SEE AN OBJECT LIGHT WAVES MUST HIT THE OBJECTBOUNCE OFF THE OBJECT INTO YOUR EYES REFLECTION-LIGHT STRIKING AN OBJECT AND BOUNCING OFF LIGHT WAVES STRIKE AN OBJECT; WAVES CAN BEABSORBED BY THE OBJECT REFLECTED PASS THROUGH IT

DEPENDS ON THE MATERIAL T A B SW Explain t h g i l how travels

READ LAB: SCIENCE EXPERIMENT LIGHT TRAVELS ACTIVITY INSTRUCTIONS EXIT SLIP EXIT SLIP: ON THE LAB, MAKE A PREDICTION EXPLAINING HOW YOU THINK LIGHT TRAVELS S I T A

H W N O S S LE LIGHT ! D E U N CONTI BAT-

SW Explain how light travels OPAQUE, TRANSPARENT & TRANSLUCENT OPAQUE TRANSLUCENT TRANSPARENT ALLOWS NO LIGHT TO PASS

THROUGH ALLOWS SOME LIGHT TO PASS THROUGH ALLOWS NEARLY ALL LIGHT TO PASS THROUGH EX: TABLE EX: WAX PAPER EX: GLASS

Color The light from the Sun might look white, but it is a mixture of colors. Each color has a different wavelength length Red light=longest wavelengths violet light =shortest wavelengths. Color White light is separated into different colors when it passes a prism.

through The colors in white light range from red to violet. When light waves from all these colors enter the eye at the same time, the brain interprets the mixture as being white. Why do objects have color? If an object reflects red waves and absorbs all the other waves, it looks red.

An object that reflects all the light waves that strike it looks white, while one that reflects none of the light waves that strike it looks black. PRIMARY LIGHT COLORS COLORS RED, GREEN AND BLUE ARE KNOWN AS PRIMARY COLORS

LIGHT OF ALMOST ANY COLOR CAN BE MADE BY MIXING DIFFERENT AMOUNTS OF RED, GREEN AND BLUE LIGHT PRIMARY PIGMENT COLORS YELLOW, MAGENTA AND CYAN ARE THE PRIMARY PIGMENT COLORS PRIMARY PIGMENT COLORS RESULT WHEN A

PIGMENT ABSORBS A PRIMARY LIGHT COLOR LIGHT COLORS VS. PIGMENT COLORS

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