EASY
Earn 100

The period of orbit of the moon indicates the time taken for its one complete rotation.

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Important Questions on Stars and the Solar System

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What is the mass of the moon?
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Earth day is celebrated on:
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Which is called Earth's satellite?
MEDIUM

Differentiate between Maria and Rilles.

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Differentiate between the following:

New moon and Full moon.

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The time taken from one New Moon to the next is 26 days.
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Match the columns

Column I Column II
a. Ditches on the surface of the moon (i) Constellations
b.When the moon is between the sun and the earth (ii)Planets
c. Eight round objects that move around the sun (iii)Craters
d.Star patterns (iv)Sun
e. Star nearest to the earth (v) New moon
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Differentiate between the waxing and Waning.

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Why does the same side of the moon face the Earth always? 
 
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Why do we see different phases of the moon? 
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Which of the following is true about the moon's surface?
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A lunar eclipse occurs when _____ comes between _____ and the Sun.
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Phases of the moon occur because:
MEDIUM

Draw well-labelled diagram for the following:

Solar eclipse

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Why does not a lunar eclipse occur on all full moon days? 
 
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Define the term Rilles.  
MEDIUM
What causes phases of the moon?
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The _____ shows different phases.
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Cotyledons are also called-