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प्रश्न
What makes the Sun so hot?
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उत्तर
The Sun is a large hot gaseous body. It is 1.3 million times bigger than Earth. The surface temperature of the Sun is about 6000°C. In the core of the Sun, the temperature is estimated to be about 20,000,000°C. Such extremely high temperature is produced by the conversion of hydrogen into helium by the process of fusion. This process releases tremendous amounts of energy and Sim radiates the energy in the form of electromagnetic radiation.
संबंधित प्रश्न
What is the ‘biosphere’?
Short Answer Question:
How did the earth get its atmospheric blanket?
Fill in the blank:
Eratosthenes worked out the circumference of the earth to be _______ km.
Distinguish between a planet and a star.
Why does the moon appear big in the sky though it is smaller than other heavenly bodies?
What is “Geoid”?
The movement of the Earth on its axis is called.
The biggest continent is ______________.
Name the continents of the world.
______ is called Earth’s twin.
