The Sun, Moon and Stars – Class 3

The Sun, Moon and Stars

The Sun

The Sun is a star. It is only one of millions and millions of stars in the Galaxy. It is the star closest to the Earth. It is the brightest object in the sky. It is a huge ball of very hot gases. It is made of 92.1% hydrogen gas and 7.8% helium gas. All stars are huge balls of very hot gases. The heat and light of the Sun gives life to the Earth and the Earth would have no life at all without the energy it receives from the Sun. It takes about 8 minutes for the sunlight to reach the Earth after it has left the Sun.

The Sun’s family

Solar System

The Sun and the eight planets that revolves around the Sun are part of the solar system. The Earth is one of these planets. The Earth completes one revolution around the Sun in its orbit in 365 days and 6 hours. The planets do not have their own light. All eight planets of the Sun’ family are mercury, venus, earth, mars, jupiter, saturn, uranus and neptune.

The Sun is at a distance of 149.6 million kilometres from the Earth.

The Moon

The Moon is the only natural satellite of Earth. It is a ball of rock that revolves around our planet Earth. We can see the Moon with our eyes at night. It is our nearest neighbour. We can see the surface of the Moon by using a pair of binoculars or a small telescope. Unlike the Earth, the Moon has no atmosphere.

The Moon has no light of its own. It is lit up by the light from the Sun. When the Moon goes around the Earth, different parts of it are lit by the Sun on different days. We can only see the part that is lit up. Due to this it seems to us that the Moon changes its shape every day.

From the Earth we can only see one side of the Moon, the other side is always turned away from us. When the Moon is between the Sun and the Earth, the side of the Moon facing us does not get sunlight. We cannot see the Moon at all because its dark side faces us. This is called New Moon. After a day or two we see a small portion of the Moon.

After seven days we can see half of the Moon. It is called Half Moon.

Half Moon
Half Moon

After two weeks, the Moon is on the opposite side. The full side facing us gets sunlight. We can then see the Full Moon.

Full Moon
Full Moon

It takes the Moon nearly 28 days to go around the Earth. So the number of days between one New Moon and the next is 28 days.

The first person to walk on the Moon was the American astronaut, Neil Armstrong.

The Stars

As already mentioned above, there are millions and millions of stars in our galaxy and the Sun is one of those stars. On a clear night we can see stars twinkling in the sky. People used their imagination to link several stars together to form a pattern or shape in the sky. These patterns and shapes are called constellations.

There are various names of constellations. It has been named after animals or people from ancient myths. Some of the constellations are The Great Bear, Ursa Major, Ursa Minor, Orion, Scorpius, Leo and Canis Major.

Fill in the Blanks exercise on the chapter – The Sun, Moon and Stars for Class 3

  1. A _____ has its own light.
  2. The ________ goes around the Sun.
  3. The _____ is the star nearest to the Earth.
  4. The shapes and patterns that stars form are known as _________.
  5. The ______ is the only natural satellite of Earth.
  6. It takes about ______ minutes for the sunlight to reach the Earth.
  7. It takes the Moon nearly ____ days to go around the Earth.
  8. Earth is a ______.
  9. The Moon does not has its own light. It gets light from the ______.
  10. ______ is a huge ball of very hot gases.

  1. star
  2. planets
  3. Sun
  4. constellations
  5. Moon
  6. eight
  7. 28
  8. planet
  9. Sun
  10. Sun

True and False Exercise on chapter – The Sun, Moon and Stars for Class 3

In this section we are presenting True and False Questions on chapter – The Sun, Moon and Stars for Students of Class 3.

10 Quiz questions based on chapter – The Sun, Moon and Stars are given below. Attempt all the questions. Every questions has four options of which only one option is correct. Select the option which you think is correct. After attempting all the quiz questions select the Submit Quiz button given at the end of the quiz. On selecting the Submit Quiz button all the correct answer will be highlighted with green colour and all the wrong answer will be highlighted in red colour. Let’s start!!

1. The Moon is a planet.

True
False

 

2. The Moon takes nearly 24 hours to go around the Earth.

True
False

 

3. Planets and the Moon do not have light of their own.

True
False

 

4. The number of days between one New Moon and the next is 28 days.

True
False

 

5. The Moon is a huge ball of very hot gases.

True
False

 

6. There are nine planets in the solar system.

True
False

 

7. We get heat and light from the Sun.

True
False

 

8. The Moon is the star closest to the Earth.

True
False

 

9. Orion is a constellation.

True
False

 

10. The Moon is closer to us than the Sun.

True
False

 

 

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