• Like
Our universe
Upcoming SlideShare
Loading in...5
×
Uploaded on

 

More in: Education
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
  • nice ppt
    Are you sure you want to
    Your message goes here
No Downloads

Views

Total Views
938
On Slideshare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
27
Comments
1
Likes
2

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. OUR PLANET - EARTH BY : ABHA ARORA
  • 2. OUR SOLAR SYSTEM
  • 3. THIS IS OUR UNIVERSE
  • 4. OUR UNIVERSE CONSISTS OF:
    • STARS
    • PLANETS
    • MOONS
  • 5. SUN IS THE NEAREST STAR…….. IT IS 150 MILLION KILOMETERS AWAY.
  • 6. sun
    • SUN IS A HOT GLOWING BALL OF FIRE………..IT PRODUCE ITS OWN LIGHT ALL THE TIME………………IT IS THE CHIEF SOURCE OF HEAT AND ENERGY OF OUR EARTH
  • 7. PLANETS
    • THE HEAVENLY BODIES THAT REVOLVE AROUND THE SUN ARE KNOWN AS PLANETS……………………THERE ARE 8 PLANETS IN OUR SOLAR SYSTEM…….they do not produce their own light….
  • 8. ORBITS
    • Each planet move around the sun on its own path called an orbit. The orbit are kind of circular paths with the sun as their centre. The orbits of different planets do not cross each other because planet remains in its own orbit.
  • 9.  
  • 10. SOLAR SYSTEM
    • The sun and its planets together form the solar system . There are 8 planets in the solar system.
  • 11. HOW TO LEARN THE SEQUENCE OF PLANETS?
    • My Very Energetic Mother Just Sent Us Noodles
    • M mercury
    • V venus
    • E earth
    • M mars
    • J jupiter
  • 12.
    • S Saturn
    • U Uranus
    • N Neptune
  • 13. This shows that :
    • Planet nearest to sun : mercury
    • Planet farthest to sun : neptune
    • Planet nearest to earth : venus and mars
    • Our earth is at third position from the sun
  • 14. OUR PLANET IS EARTH
    • The only planet out of 8 planets where life exist is our earth….
  • 15. FORMATION OF EARTH
    • Our Earth did not always look like this. In fact long ago , there was no earth at all. Scientists believe that the earth started as a large ball of burning gases.
  • 16.  
  • 17. This hot cloud of gases spun around for millions of years. As it spun , it slowly became cooler. And as it cooled , it hardened slightly and it surface became cooler.
  • 18.  
  • 19. HARDENING OF UPPER LAYER OF EARTH
  • 20. Its surface began to wrinkle like a dried plum. The wrinkles became mountain ranges. Water from the rain settled in the low lying places to form oceans , seas , rivers and lakes
  • 21.  
  • 22. Composition (What it is made of)
    • Crust
    • Mantle
    • Core
  • 23. CRUST
    • THE LAYER OF HARD ROCKS COVERS THE EARTH . THIS IS CALLED THE EARTH’S CRUST
  • 24. The Crust
    • Outer layer
    • 5-100 km thick
    • 2 types of crust
      • Oceanic (very dense, made of basalt)
      • Continental (less dense, made of granite)
  • 25. Oceanic and Continental Crust
  • 26. The Mantle
    • Middle layer
    • Very thick layer
    MANTLE
  • 27. MANTLE
    • Mantle is a mixture of rocks and metals
  • 28. The Core
    • Made mostly of iron
    • 1/3 of the earth’s mass
    • Very hot
  • 29. CORE
    • It is the centre of the earth……it is very hot………..due to this extreme heat , nothing here can remain in a solid form……….there are metals in molten form.
  • 30. Earth’s Layers
    • How are the earth’s layers similar to an egg?
    • Shell=crust
    • Egg white=mantle
    • Yolk=core
  • 31. VOLCANOES
    • The molten metals and gases lying in the centre of the earth expand due to the great heat and they exert great pressure from inside to force themselves out of the earth’s crust.
  • 32.  
  • 33. The molten material thrown out is called Lava…while the hole in the center of the volcano is called a Crater.
  • 34. THE END