Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Stars and the Solar System, Class 8, Science. You can practice these practice quizzes as per your speed and improvise the topic.Q.The stars, planets, moon and objects in sky are calleda)Solar systemb)Celestial bodiesc)Natural bodiesd)Lunar bodiesCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Heavenly bodies such as stars, planets, asteroids, meteoroids etc. present in space are called celestial bodies.

Answer

The stars, planets, moon, and objects in the sky are called celestial bodies.

Explanation:
Celestial bodies refer to any natural objects that exist in space, such as stars, planets, moons, asteroids, comets, and galaxies. These bodies are typically observed in the night sky and have fascinated humans for centuries. Here is a breakdown of the different types of celestial bodies:

1. Stars:
Stars are massive, luminous balls of gas that emit light and heat due to nuclear reactions occurring in their cores. They are composed mostly of hydrogen and helium and are responsible for illuminating the night sky. Stars come in various sizes, colors, and brightness levels, and they exist in vast numbers throughout the universe.

2. Planets:
Planets are celestial objects that orbit around a star and do not produce their own light. In our solar system, we have eight planets, including Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Planets are typically solid or gaseous bodies and can vary significantly in size, composition, and atmospheric conditions.

3. Moon:
The moon is Earth's natural satellite, and it orbits around our planet. It is relatively small compared to planets but is still a significant celestial body. The moon reflects sunlight, allowing us to see its illuminated surface at night. It plays a crucial role in Earth's tides and has been a subject of fascination and exploration by humans.

4. Asteroids and Comets:
Asteroids are rocky objects that orbit the sun, primarily found in the asteroid belt between Mars and Jupiter. They can range in size from small rocks to larger bodies several hundred kilometers in diameter. Comets, on the other hand, are icy bodies that also orbit the sun but have a tail that forms when the sun's heat causes the comet's ices to vaporize.

5. Galaxies:
Galaxies are vast systems of stars, gas, and dust that are held together by gravity. They come in different shapes and sizes, ranging from spiral galaxies like our Milky Way to elliptical and irregular galaxies. Galaxies can contain billions or even trillions of stars and are considered the building blocks of the universe.

In conclusion, celestial bodies encompass a wide range of objects, including stars, planets, moons, asteroids, comets, and galaxies. They are awe-inspiring and play a crucial role in our understanding of the universe and our place within it.

Answer

The stars, planets, moon, and objects in the sky are called Celestial bodies.

Celestial bodies refer to all the objects that exist in the universe outside of Earth's atmosphere. These objects can be categorized into various types, such as stars, planets, moons, asteroids, comets, and galaxies. Let's discuss each of these celestial bodies in detail.

1. Stars:
Stars are massive luminous spheres of plasma held together by their own gravity. They emit light and heat due to nuclear reactions occurring in their cores. Stars vary in size, color, and temperature. They can be classified into different types based on their characteristics, such as dwarf stars, giant stars, and supergiants.

2. Planets:
Planets are large celestial bodies that orbit around a star and do not produce their own light. They are spherical in shape and are held in orbit by the gravitational force of the star they revolve around. There are eight planets in our solar system, including Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

3. Moon:
The Moon is Earth's natural satellite. It is a rocky celestial body that orbits around the Earth. The Moon reflects sunlight and appears bright in the night sky. It plays a significant role in Earth's tides and has been explored by humans through various space missions.

4. Asteroids:
Asteroids are rocky objects that orbit the Sun. They are smaller than planets and are primarily found in the asteroid belt between Mars and Jupiter. Some asteroids have irregular shapes, while others are more spherical. They are remnants from the early formation of the solar system.

5. Comets:
Comets are icy bodies that orbit the Sun. They are composed of dust, rock, ice, and organic compounds. As a comet approaches the Sun, it heats up and releases gas and dust, forming a glowing coma and often a tail that points away from the Sun. Comets originate from the outer regions of the solar system.

6. Galaxies:
Galaxies are vast systems of stars, gas, and dust held together by gravity. They come in various shapes and sizes, ranging from spiral galaxies like our Milky Way to elliptical and irregular galaxies. Galaxies contain billions or even trillions of stars, along with other celestial objects.

Conclusion:
In summary, celestial bodies encompass a wide range of objects in the universe, including stars, planets, moons, asteroids, comets, and galaxies. These objects contribute to the vastness and beauty of the night sky, and their study helps us understand the complexities of the universe.

Answer

B

Answer

The stars, planets, moon and other objects in the sky are together called celestial bodies.

Answer

Celestial bodies

Answer

B)celestial bodies

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