Page 157 - Science Class 06

v Shadow forma on for various objects A solar eclipse occurs whenever the sun, the
of different shapes:
The shadows formed by various objects
of different shapes are also different.
The shadow of a circular object is
circular, the shadow of a square object
is square, the shadow of a triangular
object is triangular and the shadow of
rectangular object is rectangular.
v Shadow forma on of objects of
different colours:
The shadows formed by various objects
of different colours are always black.
You already know that a shadow is
formed when an opaque material does
not allow the light to pass through it.
Therefore, the colour of objects does
not ma er in the forma on of a
shadow.
SOLAR AND LUNAR ECLIPSE
Solar eclipse as well as lunar eclipse are
wonderful natural phenomena of shadow
forma on. When these eclipses occur, the
sun or the moon is wholly or par ally
hidden from our view. These eclipses are
the examples of the forma on of shadow
naturally.
Science-6
moon and the earth are in a straight line,
with the moon, between the sun and the
earth. This happens on a new moon day. In
this posi on, the moon does not allow
sunlight to fall on certain part of earth and
it makes its shadow on the earth.
Solar Eclipse
The lunar eclipse occurs, when the sun, the
earth and the moon are in straight line, with
the earth situated in between the sun and
the moon. At this posi on, the shadow of
the earth falls on the moon and it becomes
wholly or par ally invisible. A lunar eclipse
occurs on a full moon day.
Lunar Eclipse
1. What is a shadow?
2. Write the things needed to form a
shadow.
3. A red object will form a red shadow or
black shadow. Why?
4. What is solar eclipse and how Is it
caused?
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