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The Earth :

The Earth is our home planet.it appears like a beautiful blue and white ball when seen from space.The Earth is the only planet known to support life due to the presence of air and water

The earth was formed billions of years ago along with the solar system.It is the third planet from the sun.

The Earth goes around the sun in a fixed path called the Orbit.Earlier,pople thought that the earth was the center of the solar system.However,in the year 1513,copernicus proved that it is the earth that actually circles the sun.Hence,the sun is the center of the solar system.

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The Shape:The Earth is shaped like an orange .it is slightly flattened at the poles it looks like blue and white ball when seen from space.In ancient times,pople thought that the earth was flat.with the passage of time,it was proved that it is round,not flat.

Activity:

why is the earth round?

 

Movements:The earth is moving all the time.we don not feel its movement because we are tiny compared to the size of the earth.the earth shows two types of movements-Rotation and Revolution.

Rotation is the movement of the earth on its own axis.Earth spins like a top on its axis.The axis is an imaginary line that passes throgh the center of the Earth.

the earth takes 24 hours to spin once on its axis.the rotation of the earth on its axis causes day and night.the part of the earth ehich faces the sun has day.and the part of the earth which is away from the sun has night.That is why when we have day at one place(India),theres night on other place (America).you see the sun rising in the east and setting in the west.this is because the earth is rotating from west to east.

Revolution: the earth also revolves around the sun in a fixed orbit.this movement is called revolution.the earth takes 365 days to complete one revolution.Have you ever wondered ,why some days of the years are so hot and some so cold?the revolution of the earth causes seasons.the change in season is possible because of the tilted axis of the earth.the part of the earth facing the sun is summer.the other part away from the sun experiences winter and vice-versa.

Drill time:
  1. The Earth is__________ the planet from the sun.
  2. The Earth is shaped like an _________.
  3. _____________ of the Earth causes day and night.
  4. _____________of the Earth causes changes in season

 

KEEP IN MIND :
  • The Earth is the third planet from the sun in our solar system.
  • The Earth is shaes like an orange.It is flattened at the poles.
  • The Earth shows two types of movements-Rotation and Revolution.
  • Rotation is the movement of the Earth on its axis.Revolution is the movement of the earth around the sun.

Answer the following questions :

  1. What makes life possible on planet earth?
  2. How was it proved that the Earth is round in shape?
  3. Who first proved that the Earth goes around the sun? when ?
  4. How are days and nights caused?

 

 






































































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