YADNYA e-Learning
Science Studies - 6th Standard
14. Light and the Formation of Shadows
Question And Answer
1. Choose an appropriate word and fill in the blanks.
(a) A star is a natural source of light.
(b) A candle is an artificial source of light.
(c) When light passes through a prism, it gets separated into
seven colours.
(d) The image obtained in the pinhole camera is inverted .
(e) A shadow is formed when an opaque object comes in the
way of light.
(f) When a transparent object comes in the way of light, light
passes through it.
(options : seven, star, through, transparent, opaque, colors,
shape, erect, inverted, luminous, candle)
2. Write whether of the following objects are luminous or
non-luminous.
3. Match the following.
4. Write the answers to the following.
(a) What things are necessary for the formation of a shadow?
Ans: The shadow of an object is formed only when light does
not pass through the object. The kind of shadow is forms
depends upon the relative distance between the source of
light, the object and the surface of the screen on which the
shadows is formed.
(b) When can an object be seen ?
Ans: We see the object when the reflected rays reach our
eyes. The rays of light falling on an object from a source of
light are thrown back from the surface of that object. This is
reflection of light.
(c) What is a shadow ?
Ans: When an opaque object comes in the way of light
source, light does not pass through it. The light does not
reach a wall or any other surface on the other side of the
object. This part remains dark, this part is called shadow of
the object.
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