CBSE Class 5 Science Solar System Worksheet

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.

Q1 Identify the type of eclipse and explain how it is formed.
Answer: The diagram shows a solar eclipse.
A solar eclipse occurs when the Moon comes directly between the Sun and the Earth in a straight line. As a result, the Moon blocks the light of the Sun from reaching a part of the Earth, casting a shadow on the Earth's surface. From those areas on Earth, the Sun appears partially or fully covered.
In simple words: A solar eclipse happens when the Moon blocks sunlight by coming between the Sun and the Earth.

Exam Tip: Remember the order for a solar eclipse: Sun - Moon - Earth. Never look directly at the Sun during a solar eclipse without proper eye protection.

Q2 Circle the odd one.
(a) Moon Mercury Venus
(b) Waxing Eclipse Waning
(c) Lunar eclipse Gibbous moon Solar eclipse
Answer:
(a) Moon (Reason: Mercury and Venus are planets, whereas the Moon is a natural satellite.)
(b) Eclipse (Reason: Waxing and waning are phases of the Moon, whereas an eclipse is a shadow phenomenon.)
(c) Gibbous moon (Reason: Lunar eclipse and solar eclipse are types of eclipses, whereas a gibbous moon is a phase of the Moon.)
In simple words: Identify the item in each group that does not belong to the same category as the others.

Exam Tip: Read all options carefully and find the common scientific property connecting the majority of the items.

Q3 Fill in the blanks.
(a) The Sun and the planets forms the solar system.
(b) Artificial satellite helps in communication, weather forecasting, navigation etc.
(c) The coldest planet in the solar system is Neptune.
(d) Aryabhata was the first Indian satellite which was launched on April 19, 1975.
Answer:
(a) planets
(b) Artificial satellite
(c) Neptune
(d) Aryabhata
In simple words: Fill in the missing astronomical and technological terms to complete the statements.

Exam Tip: Learn key space facts such as the names of planets, satellite uses, and historic launch dates like India's first satellite Aryabhata.