Maharashtra Board Class 6 Science Chapter 14 – Light and the Formation of Shadows
Choose an appropriate word and fill in the blanks.
(a) A ……….. is a natural source of light. [star]
(b) A ……… is an artificial source of light.[candle]
(c) When light passes through a prism,it gets separated into ……. colours.[seven]
(d) The image obtained in the pinhole camera is ……… [inverted]
(e) A shadow is formed when an ……….. object comes in the way of light. [opaque]
(f) When a ……….. object comes in the way of light, light passes ……… it. [transparent,through]
(options : seven, star, through,transparent, opaque, colors, shape,erect, inverted, luminous, candle)
Write whether of the following objects are luminous or non-luminous.
| A book | non-luminous. |
| A burning candle | luminous |
| A wax cloth | non-luminous. |
| A pencil | non-luminous. |
| A pen | non-luminous. |
| A light bulb | luminous |
| A tyre | non-luminous. |
| A torch | luminous |
Match the following.
| Group A | Group B |
| Mirror | Non-luminous |
| Firefly | Inverted image |
| Pinhole camera | Reflection |
| Moon | Luminous |
Write the answers to the following.
(a) What things are necessary for the formation of a shadow ?
Three things are necessary to form a shadow: a source of light, an object that blocks the light, and a surface that receives the shadow.
When light falls on an object, it blocks the area behind it, creating a shadow on the surface it is receiving. The size and shape of the shadow are determined by a number of factors, including the location of the light source, the size and shape of the object, and the distance between the object and the receiving surface.
(b) When can an object be seen ?
Whenever the light rays that strike an object are reflected back from its surface, this is known as reflection of light. The reflected rays then reach our eyes, enabling us to see the object.
