4th Grade Science Light Study Guide

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Light
    LIGHT IS A FORM OF? 

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ENERGY

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    THE LIGHT ENERGY YOU CAN SEE IS CALLED THE 

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VISIBLE SPECTRUM

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    SOME TYPES OF INVISIBLE LIGHT ENERGY WE CANNOT SEE ARE

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RADIO WAVES MICROWAVE X-RAYS ULTRAVIOLET RAYS INFARED LIGHT GAMMMARAYS

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    LIGHT TRAVELS IN?

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WAVES

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    THE HIGH POINT OF THE WAVE IS CALLED THE?

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CREST

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    THE LOW POINT OF THE WAVE IS CALLED THE?

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TROUGH

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  THE DISTANCE FROM THE TROUGH TO TROUGH OR CREST TO CREST IS CALLED A ?

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WAVE-LENGTH

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    EACH ______________________ OF LIGHT ON THE VISIBLE SPECTRUM HAS A DIFFERENT WAVE LENGTH

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COLOR

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    THE NUMBER OF WAVES THAT PASS BY A CERTAIN SPOT IN A CERTAIN AMOUNT OF TIME IS CALLED THE _________________  OF THE WAVE

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FREQUENCY

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    WHAT IS THE DIFFERENCE BETWEEN THE LIGHT FROM THE SUN AND THE LIGHT FROM THE MOON?

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THE SUN MAKES ITS OWN LIGHT, BUT THE MOON REFLECTS LIGHT FROM THE SUN.

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  WAVES MOVE IN A ___________________________ LINE UNTIL THEY HIT AN OBJECT

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STRAIGHT

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WHEN LIGHT HITS AN OBJECT, IT WILL DO ONE OF FOUR THINGS:

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    ALLOW A LIGHT WAVE TO PASS THROUGH AN OBJECT MEANS TO?

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TRANSMIT

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  TAKE IN ALL OR SOME OF THE LIGHT WAVE THAT STRIKES AN OBJECT?

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ABSORB

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    BOUNCE A LIGHT WAVE OFF AN OBJECT MEANS TO: 

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REFLECT

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    BEND A LIGHT WAVE AS IT PASSES FROM ONE MATERIAL TO ANOTHER

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REFRACT

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    OBJECTS LIKE WATER, AIR, SOME PLASTICS, AND CLEAR TAPE ALLOW LIGHT TO PASS THROUGH, SO WE CAN SEE WHATEVER IS BEHIND IT- ARE CALLED?

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TRANSPARENT

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    OBJECTS LIKE A DARK SHADE OVER A WINDOW TO NOT ALLOW LIGHT TO PASS THROUGH. THEY BLOCK THE LIGHT ARE CALLED?

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OPAQUE

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OBJECTS LIKE WAX PAPER OR FROSTED GLASS WILL LET SOME LIGHT THROUGH, BUT IT WOULD BE DIFFICULT FOR YOU TO SEE THROUGH ARE CALLED?

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TRANSLUCENT

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    THESE OBJECTS WILL CAST A SHADOW. LIGHT IS BLOCKED BY THE PERSON OR ITEM CREATING THE SHADOW? 

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OPAQUE

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THE SUN'S LIGHT HITTING AN OBJECT AT ?______THIS TIME OF DAY__________? WILL CREATE SHORT, FAT SHADOWS OR SOMETIMES NO SHADOW AT ALL

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NOON

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THE SUN'S LIGHT HITTING AN OBJECT AT ??___this time of day???  WILL CREATE LONG THIN SHADOWS?

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SUNSET

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WHAT LAW STATES THAT THE ANGLE OF WAVE AS IT HITS A SMOOTH OBJECT EQUALS THE ANGLE OF THE WAVE AT WHICH IT BOUNCES OFF THE OBJECT.

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THE LAW OF REFLECTION

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    WHAT TYPE OF MIRROR HAS A FLAT SURFACE

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PLANE

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WHAT TYPE OF MIRROR HAS A SURFACE THAT IS CURVED INWARD AT THE CENTER. IT WILL MAGNIFY AN IMAGE?

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CONCAVE

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  WHAT MIRROR HAS A SURFACE THAT IS CURVED OR BULGED OUTWARD. IT GIVES A WIDE VIEW OF AN IMAGE?

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CONVEX

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