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प्रश्न
What are the types of comets and on what basis are they classified?
उत्तर
Comets are the solar system bodies that are usually spherical in shape and develop tails when they come near the Sun. Comets become visible when they are close to the Sun and the Earth.
Comets can be categorized into two groups depending on how long it takes to complete one revolution around the sun. These are:
- Long Period Comets: These comets complete one revolution around the Sun in 200 and more years. The Great Comet of 1843 is one of the examples of this type.
- Short Period Comets: These comets complete one revolution around the Sun in years less than 200. One of the examples is Halley's Come, which takes 76 years to complete the revolution. It last appeared in 1985.
संबंधित प्रश्न
Mark the following statement as true (T) or false (F).
INSAT is an artificial satellite. ( )
Fill in the Blanks
Meteoroids heat up and burn due to ______.
What’s the solution?
One of the asteroids has fallen out of its place in the asteroid belt and is hurtling towards the sun. Our earth is in its way and there is all likelihood of a collision. What can be done to prevent this collision?
______ is the first satellite launched by India.
Which country launched the world’s fi rst artifi cial launch vehicle?
The closest planet to the Sun is ______.
Which among the following statements is correct?
- Meteors are attracted by the gravitational the force of earth.
- Meteors are traveling at low speeds.
- Most of the Meteors are burnt by the heat generated by friction in the atmosphere.
Comets revolve around the Sun in highly spiral orbits.
Write short notes on Asteroids.
Write short notes on Halley’s comet.
