Solar System (1)

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EARTH AND THE SOLAR SYSTEM
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STARS

• Stars are huge balls of hot gases , which gives
  out heat and light. Our sun is also a star .

3
CONSTELLATION

• Some stars arranged in different patterns called
  constellations.

4
ORBIT

• A planet is heavenly body that revolves around
  Sun on a fixed path is called an orbit.

5
Solar system

• A Solar System is a family of planets and other
  heavenly bodies that revolve around a star called
  Sun . There are eight planets named
  Mercury,Venus,Earth,Mars Jupiter , Saturn ,
  Uranus,
• Neptune.

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earth

• It is a beautiful planet that has
  land,water,plants, hills
• mountains,valleys, and plains . It is the only
  planet that supports life . From space , it looks
  like a big blue ball.

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LAYERS OF EARTH

• The outer surface is called the crust . The
  inside centre portion of Earth is called the core
  . The core has two layers . The outer core , that
  is liquid and the inner , that is solid . The
  part of the Earth between the crust and the core
  is called the mantle .

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Test yourself

1. What is a planet ?
2. What is a Solar System ?Write the names of all
   the planets.
3. Name the layers of Earth.

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satellites

• Artificial satellites are scientific instruments
  sent to space by human which orbit around Earth .
  They provide communication services and weather
  information .
• Aryabhatta was Indias first artificial satellite
  .

• Small heavenly bodies that revolve around the
  planets are called satellites . Moon is the
  natural satellite of Earth .

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Movements of earth

• The movement of Earth on its axis is called
  rotation . Earth takes 24 hours to complete one
  turn . Day and night are caused due to rotation
  of Earth .

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• Earth also revolves around Sun in an orbit . This
  motion is called revolution . Earth takes one
  year to complete one revolution . Seasons are
  caused due to revolution of Earth .

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Brain teasers

1. Name the first man to step on Moon .
2. Name the first Indian to go into space .
3. Name Indias first artificial satellites .
4. Name the largest planet .
5. The planet which has rings around it .
6. Name the planet having the smallest orbit .
7. The coldest planet as it is very far from Sun .
8. The smallest and closest planet to Sun .

13
Activity-unscramble

• onom
• ottraoin
• remurcy
• raeht
• lteanp
• 6. anurus

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Thank You

• Prepared By
• PARV
• Class 4th
• School St. Marys Convent School
• Faridkot