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WHAT IS A SOURCE OF LIGHT?
ANY OBJECT THAT PRODUCES LIGHT IS CALLED A SOURCE OF LIGHT.
HOW MANY TYPES OF SOURCES OF LIGHT ARE THERE? NAME THEM.
THERE ARE 2 TYPES OF SOURCES OF LIGHT. NATURAL AND ARTIFICIAL
WHAT ARE NATURAL SOURCES OF LIGHT?
THE SOURCES OF LIGHT WHICH OCCUR IN NATURE ARE CALLED NATURAL SOURCES OF LIGHT.
WHAT ARE ARTIFICIAL SOURCES OF LIGHT?
THOSE SOURCES OF LIGHT WHICH ARE MAN- MADE LIKE: BULBS, CANDLES
WHAT ARE LUMINOUS OBJECTS?
THOSE OBJECTS WHICH GIVE OFF THEIR OWN LIGHT ARE CALLED LUMINOUS OBJECTS. LIKE SUN, STARS. BULBS
WHAT ARE NON- LUMINOUS OBJECTS?
THOSE OBJECTS WHICH DO NOT GIVE OFF THEIR OWN LIGHT ARE CALLED NON-LUMINOUS OBJECTS. LIKE: PEN, PENCIL, TABLE ETC.
IS MOON A LUMINOUS OBJECT? WHY?
NO, ITS A NON LUMINOUS BODY BECAUSE IT DOES NOT HAVE ANY LIGHT OF ITS OWN BUT ONLY SHINES BECAUSE OF THE LIGHT OF SUN FALLING ON IT.
NAME THE 3 TYPES OF OBJECTS?
TRANSPARENT, TRANSLUCENT AND OPAQUE.
WHAT ARE TRANSPARENT OBJECTS? ( CHARACTERISTICS)
TRANSPARENT OBJECTS ARE THOSE OBJECTS WHICH ALLOW ALL LIGHT TO PASS THROUGH THEM AND WE CAN SEE ACROSS THEM.
WHAT ARE TRANSLUCENT OBJECTS?
THOSE OBJECTS WHICH ALLOW ONLY SOME LIGHT TO PASS THROUGH THEM AND WE CAN ONLY SEE BLUR ACROSS THEM.
WHAT ARE OPAQUE OBJECTS?
THOSE OBJECTS WHICH DO NOT ALLOW LIGHT TO PASS THROUGH THEM AND WE CANNOT SEE ACROSS THEM
WHAT IS A SHADOW AND HOW IS IT FORMED?
A SHADOW IS A DARK PATCH FORMED BEHIND AN OBJECT ON A SCREEN, WHEN THE PATH OF LIGHT IS BLOCKED BY THIS OBJECT.(OPAQUE OR TRANSLUCENT OBJECTS)
HOW DOES FORMATION OF DAY AND NIGHT TAKE PLACE?
DUE TO ROTATION ON, THE FACE OF EARTH TOWARDS THE SUN GETS LIGHT SO IT IS DAY TIME THERE AND THE FACE AWAY FROM THE SUN WHICH DOES NOT GET LIGHT HAS NIGHT.
WHAT IS AN ECLIPSE?
An eclipse takes place when one heavenly body such as a moon or planet moves into the shadow of another heavenly body. There are two types of eclipses on Earth
WHAT IS LUNAR ECLIPSE?
ON THE NIGHT OF FULL MOON, WHEN THE EARTH, SUN AND MOON COME IN A STRAIGHT LINE, THE EARTH BLOCKS THE SUNLIGHT FALLING ON MOON AND CASTS ITS SHADOW ON THE MOON
WHAT IS LUNAR ECLIPSE?
ON THE NIGHT OF FULL MOON, WHEN THE EARTH, SUN AND MOON COME IN A STRAIGHT LINE, THE EARTH BLOCKS THE SUNLIGHT FALLING ON MOON AND CASTS ITS SHADOW ON THE MOON
