Question

10. Name two phases of Moon. Why does it appear to be getting bigger and smaller
during different nights? ​

Answer 1

Have you ever looked up at the sky and noticed how the Moon changes shape each night? Ever wondered why… And how?

Well, here’s the answer – it doesn’t ‘change shape’ at all! Let’s take a look at the phases of the Moon…



Phases of the Moon

The Moon doesn’t emit (give off) light itself, the ‘moonlight’ we see is actually the Sun’s light reflected off the lunar surface.

Facts about the moon - image 2

So, as the Moon orbits the Earth, the Sun lights up different parts of it, making it seem as if the Moon is changing shape. In actual fact, it’s just our view of it that’s altering…

The Phases of the Moon - image 2Zoom in for a closer look!



Changing faces

The Moon is Earth’s only natural satellite (a celestial body that orbits a planet). It takes the Moon 27.3 days to make a complete orbit around the Earth, but because the Earth is moving around the sun at the same time, it takes the moon 29.5 days to go through its eight different ‘phases’ – a lunar month.

The Phases of the MoonZoom in for a closer look! When the Moon appears to be getting bigger, it’s ‘waxing’ and when it looks like it’s getting smaller, it’s ‘waning’. Once the face of the Moon is fully turned towards the Sun, it’s a Full Moon, and we see it all. But, as the Moon moves around the Earth, the face pointing towards us gradually becomes hidden from the Sun until we can hardly see it at all – this is a New Moon. Cosmic!

Answer 2

Answer:

The revolution of the Moon around the Earth makes the Moon appear as if it is changing shape in the sky. This is caused by the different angles from which we see the bright part of the Moon's surface. These are called "phases" of the Moon. Of course, the Moon doesn't generate any light itself; it just reflects the light of the Sun. The Moon passes through four major shapes during a cycle that repeats itself every 29.5 days. The phases always follow one another in the same order. Below are pictures of the four major shapes and a description of each.

New Moon . New Moon , First Quarter , Full Moon and Last Quarter .

Explanation:

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