CBSE Class 5 Science Solar System Worksheet

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The Solar System and the Earth

A. Answer the following in one word.
1. After how many years Halley’s Comet is seen-76 years
2. Name the largest planet in the solar system-Jupiter
3. Who is regarded as the ‘Father of Indian Astronomy’ – Aryabhata
4. Which is the nearest star to the Earth- Proxima Centuari
5. What is Milky Way called in Hindi- Akash Ganga
B. Answer the following in 5 to 10 words:

Question. Name the planets according to their orbits.
Ans. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

Question. What is Artificial satellite?
Ans. Artificial satellites are man- made objects which continuously orbit the earth or some other body in space.

Question. What do mean by constellation?
Ans. A constellation is a group of stars that make an imaginary shape in the night sky.

Question. What is Dwarf Planet?
Ans. A dwarf planet is a spherical celestial body that orbits the sun. It is smaller than a planet.eg Ceres

Question. What is Nebula?
Ans. The stars are formed from the mass of dust or gas moving in space is Nebula.

C. Answer the following in 20 to 25 words :

Question. Why do planets twinkle like a stars at night?
Ans. The light from the stars reach us after passing through the many layers of the atmosphere. As the light passes through these layers it is interrupted many times by the particles present in the atmosphere. Thus it blinks.

Question. How is meteor formed?
Ans. A meteor is a small rocky or metallic body in outer space. which are typically formed from extraterrestrial igneous activity; Meteors burn out, but some are quite large and fall on Earth’s surface ,creating a hole or a crater .

Question. What are periodical comets? Give an example.
Ans. A periodic comet is a comet which orbits around the Sun. A short-period comet will complete its orbit in less than 200 years. A long-period comet will take more than 200 years. Example- there are nine Shoemaker-Levy comets and twenty-four Neat comets.

Question. Why is there no life on the Moon?
Ans. Life on the moon is not possible as on the earth because of many reasons.
1. There is no water on the moon, which is the first and foremost requirement for the life.
2. There is no oxygen on the moon.
3. There is no atmosphere on moon, which is very important.

D.  Answer the following in 50 to 60 words:

Question. Differentiate between a star and planet? Ans. Difference between Star and Planet.
Ans.
Stars                                                                  Planet
1 Stars are the astronomical objects                  Planets refers to the celestial object
2 They have their own light.                              They do not have their own light.
3 Their position changes but due to                   They change position.
substantial distance,
it can be seen after a long time.
4 They are big in size                                         They are small in size
5 Dot shaped                                                    Sphere-shaped
6 High temperature                                           Low temperature
7 Stars twinkle.                                                Planets do not twinkle.
8 Stars are made up of Hydrogen, Helium          Planets are made up of solid,
and other light elements.                                   liquid or gases, or a combination thereon.