Question

1. The earth is a unique planet. Give reasons.
2. What are asteroids?
3. How is a meteor formed?
4. Why is there no life on the moon?
5. Differentiate between a star and a planet.​

Answer 1

Explanation:

1. The earth is a unique planet because it has favourable conditions to support life, the earth is neither too hot nor too cold, it has water and air and life supporting gases like oxygen.

2. Apart from the stars, planets and satellites, there are numerous tiny bodies which move around the sun, these are called asteroids. They are found in the orbits of mars and Jupiter.

3. Complete ans: Many meteorites are formed from a collision of asteroids that rotate around the sun between the tracks of Mars and Jupiter in the region called the asteroid belt. As asteroids break into each other, they produce loose debris- meteoroids. ... It is sometimes called a meteor.

4. There is no life on the moon because the moon does not have conditions favourable for life. It has mountains, plains and depressions on it's surface.

5. ★ Planet-

• Planets are the Celestial body that do not have their own heat nad light.

• They are lit up by the lights of stars.

• For example, the earth on which we live is a planet.

• Planets are eight in our solar system.

★ Stars -

• Stars are celestial bodies made up of gases, they are. huge in size and have high temperature.

• They have their own heat and light, which emit in large amounts.

• For example the sun is a star.

• Stars are countless.

Hope this helps.

Answer 2

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1. The earth is a unique planet because it has favourable conditions to support life, the earth is neither too hot nor too cold, it has water and air and life supporting gases like oxygen.

_____________________

2. Apart from the stars, planets and satellites, there are numerous tiny bodies which move around the sun, these are called asteroids. They are found in the orbits of mars and Jupiter.

_____________________

3. Complete ans: Many meteorites are formed from a collision of asteroids that rotate around the sun between the tracks of Mars and Jupiter in the region called the asteroid belt. As asteroids break into each other, they produce loose debris- meteoroids. ... It is sometimes called a meteor.

_____________________

4. There is no life on the moon because the moon does not have conditions favourable for life. It has mountains, plains and depressions on it's surface.

_____________________

5. ★ Planet-

• Planets are the Celestial body that do not have their own heat nad light.

• They are lit up by the lights of stars.

• For example, the earth on which we live is a planet.

• Planets are eight in our solar system.

★ Stars -

• Stars are celestial bodies made up of gases, they are. huge in size and have high temperature.

• They have their own heat and light, which emit in large amounts.

• For example the sun is a star.

• Stars are countless.

_____________________