SOCIAL SCIENCE. UNIT 1. EARTH AND THE UNIVERSE

 

The Origin of the Universe

There are many different theories on how the universe started but the most known is that of the Big Bang theory, or in other words, the great explosion. This explosion occurred about 10 or 20 billion of years ago when absolutely nothing existed, and caused a gigantic cloud of dust and gas and was extremely hot. This cloud was even in shape but began to grow and grow at such a tremendous speed suffering temperature changes along the way. It was at this stage that the universe began to form.

https://happylearning.tv/en/the-origin-of-the-universe/

The Earth and its Movements

The Earth is the third planet from the Sun. Like other planets in the solar system, the Earth moves in two different ways: one is called rotation, which is the movement of the Earth on its own axis, and the other movement is called revolution which is the movement of the Earth going around the Sun.

https://happylearning.tv/en/the-earth-and-its-movements/

The Year and the 4 Seasons

Our planet, the earth, turns around the sun. -All the planets in the solar system do this– and this movement is called, the rotational movement… And it is on earth, where the rotational movement, causes the 4 seasons!

Do you know how long is takes the earth to do a single rotation around the sun? EXACTLY! It takes 365 days and 6 hours, which is the same as one year.

There are 12 months and 4 seasons in a year:- Spring, summer, autumn and winter. Each season has a different climate, and lasts 3 months.

https://happylearning.tv/en/the-year-and-the-4-seasons/

THE PHASES OF THE MOON