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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
Give any two features of the earth that make it a ‘Unique Planet’.
Give a reason for the following:
Earth has the most ideal temperature conditions.
Why is the following planet not inhabitable?
Jupiter
Why is Neptune the coldest planet of the Solar System?
What is meant by Summer Solstice?
Answer the following question briefly.
How does a planet differ from a star?
Use your brain power!
Suppose you want to give your address to a friend you have on the planet Mars. How will you write your address if you want them to understand exactly where you live?
For what purpose are rockets used in space travel?
The line which divides day and night on the Earth’s surface is ______.
Only ______ percent of water is fresh on earth.
