Introduction to Shadows Video:
A shadow forms when light is blocked by an opaque or translucent object. Basically an object that does not allows any light to pass through will form a shadow.
How Shadows Are Formed :
Shadows are formed by light, because if light shines onto an object, and the object blocks the light, the light will go sideways of the object, and therefore, a shadow is formed. Translucent materials, such as tissue paper, allow partial light through, which scatters and creates a faint shadow. Opaque objects, such as a tree, completely block light and form a dark shadow. Transparent objects, such as glass, do not create a shadow because light passes through in a straight line.
Size of Shadows:
The size of the shadow depends on the angle at which the light is falling on the object. At noon, when the sun is overhead there is little or no shadow at all, this is because The position of sun changes throughout the day, thus changing the angle at which the rays fall on the ground. The size of the shadows of course, will also be determined if the object is in motion. Usually the size of the shadow will be slightly longer or larger than the moving object.
Useful for CBSE, ICSE, NCERT & International Students
Grade : 2
Subject : Evs
Lesson : Shadow
Visit www.oztern.com to find personalized test preparation solutions for Pre Medical – AIPMT, AIIMS, JIPMER, State, Pre Engineering – IIT JEE, JEE MAIN, BITSAT, State and Foundations – Class 6 to 10