Презентация на тему From the Big Bang to Homo Sapiens

thousand millions years ago. But our Universe was 37,5

billion years earlier.
All has begun with the Big Bang …

The introduction

only a small point, very dense and hot. There

is «the Big Bang». From a point there is space and time. There are a lot of particles and antiparticles.
Particles and antiparticles come into collision and both of them are destroyed. As a result of this «microscopic fight» there are only particles. By that time the Universe is enlarged with enormous speed.

The Big Bang (37,5 milliard years ago...)

dust and gas cloud. Gradually the biggest part of

this cloud gathers in its centre. So there is the Sun. The rest of the part divides into clots and forms planets, including the Earth.

The solar sistem

is sour water on the Earth. The first organisms

(bacteria) live in this water. Organisms are brought on the Earth by a meteorite.
(but this version is unchecked)

The beginnig of life on the Earth

Cambrian period
Bacteria become invertebrate animals with a

chitin cover.

fall of level of ocean - huge emission of

lava). That’s why fish live on a land.
There is an important group of fish – Sarcopterygii (lat.) . They are ancestors of all four-footed animals.

The first fish. Their exit on a land (408-360 million years ago ...)

The Silurian and their Devonian periods

invertebrate
animals

Not yet
fish

fish

Coal period
The climate becomes more droughty. As

a result some fish can live in water and on a land. They can breathe in water and ordinary air.

of of mountain ranges. As a result the climate

becomes drier. Many creatures get a leather shell to live only on a land. There are land reptiles. Many ancient groups of invertebrate animals die out.

Land reptiles (286-248 million years ago ...).

The Perm period

– Thecodontia (lat.). They are ancestors of birds, dinosaurs,

crocodiles and Pterosauria (lat.).
In the Triassic period there are a lot of dinosaurs: Sauropoda (lat.) and gigantic long-necked dinosaurs. There are Pterosauria (lat.). Also there is a big group of predatory dinosaurs – Carnosauria (lat).
Dromaeosauridae (lat.) are small predatory dinosaurs. They are ancestors of birds.
There are many pterodactyloidea (lat.).
There are marsupials, placentary mammals and ancestors of crocodiles.

Dinosaurs (286-248 million years ago ...).

The Triassic, the Jursky and the Cretaceous periods

first whales, elephants, ancestors of horses and monkeys.
The first

large mammals

other monkeys. They do not have a tail. They

have rudiments of intellect.

Anthropoids

Their brain cerebrum is rather large, but it does

not differ from a brain cerebrum of anthropoids very much.
Australopithecus can walk upright and do prehensile movements.
Probably australopithecus are ancestors of Homo Sapiens.

Homo Sapiens