Question

Give reasons for the following
a) Even though mercury is nearer to the sun Venus is hotter than mercury.
b) It is difficult for water to exist in liquid state on Mars.
c) The northern hemisphere of Uranus remains in a four –decade long period of darkness.
d) Comets are visible only when they are near the sun.
e) Hailey’s comet is known as periodic Comet.

f) The moon appears to change shape.
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Answer 1

Answer:

1. because it has thicker atmosphere.
2. on the surface of Mars, the low pressure from the planets lack of a substantial of atmosphere liquid water impossible.
3. Orbit and Rotation. The day face says the sun and the atmosphere never rotates to the night side to cool down the nice side is in darkness and the atmosphere will never get a chance to warm up.
4. because they are math app of ice which is very much coal and when it comes closer to the sun it ice melts and form a tail like structure.
5. because it returns to Earth's vicinity about every 75 years.
6. the moon appears to change shape because the reflecting sun light is facing away from earth. As the moon moves away our in its orbit, the light reflecting off the side of the moon creates a silver of shape.