Презентация "Dinosaurs" 7 класс


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Dinosaurs

Dinosaurs

  • Millions years ago…

When did dinosaurs live?

  • 200 million years ago, there was only one continent, called Pangaea.
  • The climate was different
  • from now. It was very hot.

There were not any people on Pangaea at that time. Many different types of dinosaurs lived in all parts of the world.

  • There were not any people on Pangaea at that time. Many different types of dinosaurs lived in all parts of the world.

The dinosaurs didn’t all live at the same time. The different types of dinosaurs existed at different times. Dinosaur species evolved and went extinct throughout the Mesozoic Era.

  • The dinosaurs didn’t all live at the same time. The different types of dinosaurs existed at different times. Dinosaur species evolved and went extinct throughout the Mesozoic Era.

The Mesozoic Era

  • The Mesozoic is divided into three time periods: the Triassic (248-175 mln. years ago), the Jurassic (175-130 mln. years ago), and the Cretaceous (130-65 mln. years ago).

In the Triassic period of the Mesozoic, the early dinosaurs were small, and most species died out in an extinction at the end of this period.

  • In the Triassic period of the Mesozoic, the early dinosaurs were small, and most species died out in an extinction at the end of this period.

In the Jurassic period, many new dinosaur species appeared, including the gigantic dinosaurs like Apatosaurus, Seismosaurus, Stegosaurus, and Brachiosaurus.

  • In the Jurassic period, many new dinosaur species appeared, including the gigantic dinosaurs like Apatosaurus, Seismosaurus, Stegosaurus, and Brachiosaurus.

Dinosaurs reached the height of their diversity during the Cretaceous. Tyrannosaurus Rex and many other dinosaurs lived during that period.

  • Dinosaurs reached the height of their diversity during the Cretaceous. Tyrannosaurus Rex and many other dinosaurs lived during that period.

Were dinosaurs reptiles?

  • Dinosaurs were reptiles. They laid eggs and they had cold blood.

Where did dinosaurs live?

  • All dinosaurs lived on land. They walked on two or four legs. Some of them moved slowly (for example, Apatosaurus), but other dinosaurs moved fast (for example, Compsognathus).
  • Apatosaurus
  • Compsognathus

What did they eat?

  • Most dinosaurs did not eat meat, they were plant-eaters. But some of them were meat-eaters, they killed smaller dinosaurs for food.

Were dinosaurs big?

  • Some dinosaurs were very big (for example, Apatosaurus and Brachiosaurus).
  • Other dinosaurs were small (for example, Compsognathus and Hypsilophodon).

The biggest dinosaurs

  • The biggest dinosaurs were gigantic, slow-moving, tiny-headed, cow-like plant-eaters.
  • They had very long necks which were useful for reaching leaves from tall trees.
  • Among the largest land animals ever discovered one should mention: Seismosaurus, Apatosaurus, and Diplodocus.

One of the biggest carnivorous (meat-eating) dinosaurs was Tyrannosaurus Rex.

  • One of the biggest carnivorous (meat-eating) dinosaurs was Tyrannosaurus Rex.
  • One of the tallest dinosaurs was Brachiosaurus.
  • But blue whales are bigger than any of the dinosaurs were!

When did dinosaurs die?

  • Dinosaurs died a long time before people appeared on Earth. The first people appeared about 150,000 years ago. The last dinosaur disappeared about 65 million years ago.

What happened to dinosaurs?

  • Some scientists think that the climate changed suddenly. It became much colder and the dinosaurs were slow to change with the climate.

A new idea is that a meteor crashed into the Earth. A lot of dust from the meteor landed on the plants. Many animals and dinosaurs were plant-eaters, and perhaps the dust killed them. So there was nothing for meat-eating dinosaurs to eat, and they also died.

  • A new idea is that a meteor crashed into the Earth. A lot of dust from the meteor landed on the plants. Many animals and dinosaurs were plant-eaters, and perhaps the dust killed them. So there was nothing for meat-eating dinosaurs to eat, and they also died.

But, as many animals from that time didn’t die, scientists are not sure what really happened and why the dinosaurs disappeared.

  • But, as many animals from that time didn’t die, scientists are not sure what really happened and why the dinosaurs disappeared.

Test “Dinosaurs”

  • True or false:
  • Dinosaurs lived 20 million years ago.
  • There were not any people at that time.
  • All the dinosaurs lived in the Mesozoic Era.
  • Dinosaurs were reptiles and laid eggs.
  • Some of dinosaurs lived on land, others could fly.
  • Most dinosaurs were meat-eaters.
  • All the dinosaurs were very big.
  • There are no animals bigger than dinosaurs.
  • The last dinosaur disappeared 65 million years ago.
  • Scientists are not sure why the dinosaurs disappeared.
  • 2. True
  • 1. False
  • 3. True
  • 5. False
  • 7. False
  • 8. False
  • 6. False
  • 4. True
  • 9. True
  • 10. True
  • Check your answers:

Homework:

  • Make a project “Dinosaurs”.
  • Tell about dinosaurs using your project and the notes of the lesson.

For Your Info

  • Apatosaurus
  • Brachiosaurus
  • Diplodocus
  • Stegosaurus
  • Seismosaurus
  • Compsognathus
  • Hypsilophodon
  • Protoceratops
  • Tyrannosaurus Rex
  • Types of dinosaurs

Apatosaurus

  • Apatosaurus was one of the largest land animal that ever existed.
  • It lived during the
  • late Jurassic Period,
  • about 150 million
  • years ago.
  • Sometimes it was
  • called Brontosaurus.

Apatosaurus was about 25 m long and very heavy – more than 30,000 kg.

  • Apatosaurus was about 25 m long and very heavy – more than 30,000 kg.
  • It had a small head, a long, heavy body and thick, heavy legs.
  • The dinosaur moved very slowly on four legs and lived near the water.
  • It was a plant-eater.

Many fossils of Apatosaurus

  • Many fossils of Apatosaurus
  • have been found in Utah, Oklahoma, Colorado, and Wyoming, in the USA.

Brachiosaurus

  • Brachiosaurus was one of the tallest and heaviest dinosaurs ever found.
  • It lived in the middle to late Jurassic Period, about 150 mln. years ago.

Brachiosaurus had a long neck, small head and a short thick tail.

  • Brachiosaurus had a long neck, small head and a short thick tail.
  • It was about 26 m long, and weighed about 30-80 tonnes.
  • It was a plant-eater and ate the tops of tall trees with its large teeth.

The first fossil of Brachiosaurus was found in western Colorado, USA, in 1900.

  • The first fossil of Brachiosaurus was found in western Colorado, USA, in 1900.
  • Then in 1909 many Brachiosaurus fossils were found in Tanzania, Africa.

Diplodocus

  • It was the longest plant-eating dinosaur.
  • It had an 8 m long neck and a 16 m long tail. But its head was less than 16 cm, with a tiny brain.
  • Diplodocus lived during the Jurassic period, about 150 million years ago.

Many Diplodocus fossils have been found in the Rocky Mountains of the western USA (in Colorado, Montana, Utah, and Wyoming).

  • Many Diplodocus fossils have been found in the Rocky Mountains of the western USA (in Colorado, Montana, Utah, and Wyoming).

Stegosaurus

  • Stegosaurus lived during the late Jurassic Period, about 150 million years ago.
  • It was about 2.5m tall and 6-9 m long. It had a tiny brain and was probably the silliest dinosaur.

Stegosaurus walked on two legs and on four legs. It had short legs at the front and long legs at the back.

  • Stegosaurus walked on two legs and on four legs. It had short legs at the front and long legs at the back.
  • It also had triangular
  • ‘plates’ along its back
  • and long spikes on the
  • end of its tail.
  • It was a plant-eater.

The first Stegosaurus fossil was found in Colorado, USA, in 1876.

  • The first Stegosaurus fossil was found in Colorado, USA, in 1876.
  • Many other fossils have been found in western North America, western Europe, southern India, China, and southern Africa.

Seismosaurus

  • Seismosaurus lived during the late Jurassic Period. It was among the longest land animals that ever lived.

Seismosaurus moved slowly on 4 short, column-like legs.

  • Seismosaurus moved slowly on 4 short, column-like legs.
  • Its front legs were shorter than its back legs, and all had elephant-like, five-toed feet.

Seismosaurus fossils have been found in New Mexico, USA.

  • Seismosaurus fossils have been found in New Mexico, USA.

Compsognathus

  • Compsognathus was a bird-like dinosaur that walked on two long, thin legs.
  • It was probably the smallest dinosaur. It was less than one metre long, weighed about three kilograms and moved very fast.
  • It had a lot of sharp teeth and was a meat-eater.
  • It ate small animals, insects and lizards.

Compsognathus was first discovered in southern Germany in the late 1850s.

  • Compsognathus was first discovered in southern Germany in the late 1850s.
  • Only two fossils of Compsognathus have been found: one in Germany and one in France.

Hypsilophodon

  • Hypsilophodon was probably the fastest dinosaur.

Hypsilophodon lived in the early Cretaceous Period, about 120 million years ago.

  • Hypsilophodon lived in the early Cretaceous Period, about 120 million years ago.
  • It had a beak made of horn and large eyes.
  • It was a small plant-eater, 1.5 metres long, and it weighed about 65 kilograms.

About 20 Hypsilophodon fossils were discovered on the Isle of Wight, and island off the coast of southern England.

  • About 20 Hypsilophodon fossils were discovered on the Isle of Wight, and island off the coast of southern England.

Protoceratops

  • Protoceratops lived in the late Cretaceous period, about 80 million years ago.
  • This dinosaur was a plant-eater. It was about 2 metres long and it was heavy. It walked on four legs. Its head was very big, almost as long as its body. At the back of its head, it has bones. They looked like a fan.

Protoceratops was first discovered in the Gobi Desert in Mongolia.

  • Protoceratops was first discovered in the Gobi Desert in Mongolia.
  • Numerous fossils have been found, from eggs in nests to mature specimens.

Tyrannosaurus Rex

  • Tyrannosaurus Rex was the largest of the carnivores that lived during the late Cretaceous period, about 85-65 million years ago.
  • It was a fierce dinosaur that walked on two legs.

Tyrannosarus Rex was about 14 m long and 5 m high.

  • Tyrannosarus Rex was about 14 m long and 5 m high.
  • It had a very large head, tiny arms, each with two fingers, and bird-like feet.
  • One Tyrannosaurus was found with some teeth up to 33 cm long. It could eat up 230 kg of meat in one bite!

Tyrannosaurus fossils have been found in western North America (in the USA and Canada), and east Asia (Mongolia).

  • Tyrannosaurus fossils have been found in western North America (in the USA and Canada), and east Asia (Mongolia).

Sources:

  • Andrew Littlejohn, Diana Hicks with Olga Vinogradova. Cambridge English for Schools in Russia. Student’s Book Two. – Cambridge University Press and Drofa Publishers, 2004, p.16, 108.
  • Prehistoric Animals. Журнал «Методическая мозаика». Приложение к журналу «Иностранные языки в школе». – 2008. – №1, с.11.
  • http://www.EnchantedLearning.com
  • http://www.ZoomDinosaurs.com

Author: Maria Stanislavovna Nickiforova, EL Teacher, School 83, Seversk, Tomsk Region