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The Moon and the Earth
Hello friends, welcome to a new video from Happy Learning. Today we are going to learn about… the Moon.
The Moon is the only satellite that rotates around our planet and it takes 28 days to completely go around the Earth. But, do we now what a satellite is? A natural satellite is any kind of celestial body that rotates, or actually, orbits around a planet.
The Moon is never still, it moves and in two ways. It has a movement of rotation, which means it turns in its own axis, and a movement of translation, that is to say, it rotates around the Earth.
The duration of the movement of rotation and translation is 28 days. Because it takes the same amount to rotate on its own axis and to completely go around the Earth, the Moon always shows us the same face.
When we observe the Moon along a period of time it appears to change shape. These changes in appearance are called lunar phases and they repeat every 28 days. There are four: full Moon, first quarter, new Moon and last quarter. The Moon phases are produced by two reasons: the movement of the Moon around the Earth and because the Moon reflects light form the sun as a mirror.
In this phase the Moon is passing between the Earth and the Sun. The illuminated face of the Moon is facing the opposite direction to Earth. The dark side ends up facing the Earth, and this is why we cannot see the Moon.
You can see it approximately one week after the new Moon. One half of the illuminated side faces the Earth. It is called the first quarter because, from the new Moon phase, the zone illuminated by the sun grows every time.
Approximately a week after the first quarter, we can see the whole Moon illuminated. The Earth is between the Moon and the sun and we can see it fully.
The Moon presents its other half face illuminated. The name of the last quarter comes from the fact that the illuminated side becomes smaller and smaller each time
A very easy trick to now whether the Moon is in its first or last quarter is the following. If the Moon has the shape of a C, it is in its last quarter and if it has the shape of a D, it is in its first quarter.
So now you know, the Moon has 4 phases:
New Moon, first quarter, full Moon and last quarter.
Know we are going to learn a few facts about the Moon
Do you know the distance between the Moon and the Earth? Although it looks as though it is not very far away, the Moon is about 385,000 kilometers from the Earth.
Another very interesting fact is that a rocket takes three days to get to the Moon. Its incredible, isn’t it?
The first astronaut that stepped on the Moon was Neil Armstrong and this very important accomplishment occurred in the year 1969 aboard the Apollo 11 rocket.
The Moon is 4 times smaller than the Earth, but it is very important for the sustainability of life in our planet. The Moon generates tides; Do you now what that is? A tide is the rise and fall of the sea level. They occur every 6 hours approximately.
Well now you know a little bit more about the Moon, very interesting, right?
Bye friends and don’t forget to subscribe to the Happy learning channel.
Date Added: 2017-10-02
Category: Videos For Kids
Watched 225 times
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