Today, I went to the museum of national history.

I learned about Earth's History, dinosaurs and solar system.

The Universe was born about 15 billion years ago because of the Big Bang.

And about 4.6 billion years ago, the Earth was borned.

In the solar system, there were 8 planets.

They are Mecury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

At first of Earth, the first plant is Cyanobacteris.

Dinosaurs are two kind.

First is Herbivorus, second is Canivorous.

Herbivorous ate plants, has long tail and has smoothe teeth.

Canivorous ate meats , has short tail and has sharp teeth.

Halla mountain in Korea, it is a volcano.

But Halla mountain is inactive volcano.

Structure of earth, there were inner core(³»ÇÙ),

outer core(¿ÜÇÙ), mantle(¸ÇƲ) and crust(Áö°¢).

Inner core and outer core's temperature is really really hot.

And crust is very thin.

Elephant's trunk is made of numerous muscle.

It work like human's hand.

And Elephants breathe through their trunk.

It helps for eat food.

Elephant also use their trunk to water their bodies.

Today, we learned inside, so it's very comfortable.