RBSE Solutions Class 5 Environmental Studies Chapter 25 Our Earth and Space

Chapter 25 Our Earth and Space

Text Book Questions

Points for discussion (Page No. 143)

 

Question 1. What all have you seen in the sky?
Answer: We have seen the polar star, other stars, the moon, and the sun in the sky. These are all natural objects we can observe.
In simple words: We see stars, the moon, and the sun in the sky.

🎯 Exam Tip: When listing celestial bodies, remember the major ones visible from Earth, like stars, moon, and sun.

 

Question 2. Why cannot we see directly towards the sun?
Answer: We cannot look directly at the sun because its light is extremely bright. This bright light can harm our eyes permanently. Always wear special protective eyewear when viewing the sun directly.
In simple words: We cannot look at the sun directly because it is too bright and can hurt our eyes.

🎯 Exam Tip: Always emphasize the danger of looking at the sun directly and the need for eye protection.

Explore and write the answers of the following (Page No. 145)

 

Question 1. Observe the Saptarishi constellation in the sky at night and draw its picture.
Answer: The Saptarishi constellation, also known as the Big Dipper, is a group of seven bright stars that form a dipper or ladle shape. These stars are easily visible in the night sky. Observing the pattern helps us locate other stars and directions.

In simple words: The Saptarishi constellation looks like a large spoon or ladle made of seven stars in the night sky.

🎯 Exam Tip: Focus on drawing seven distinct stars in the correct pattern (a ladle or dipper shape) and ensure they are connected by imaginary lines.

 

Question 2. What else do you see in the sky? Draw their pictures also.
Answer: Besides stars, we can see the moon, planets, and sometimes meteors (shooting stars) in the night sky. During the day, we see the sun and clouds. Each of these has a unique appearance, such as the crescent or full moon, and various cloud shapes. Children can draw these as they observe them.
In simple words: We see the sun, moon, planets, and clouds in the sky.

🎯 Exam Tip: Encourage students to draw simple representations of the sun (circle with rays), moon (various phases), and different cloud types.

Explore and know (Page No. 145)

 

Question 1. What is the difference between an aeroplane and a spacecraft?
Answer: An aeroplane is designed to fly within Earth's atmosphere, moving around our planet. In contrast, a spacecraft is built to travel beyond Earth's atmosphere into outer space. Spacecraft typically move much faster than aeroplanes to escape Earth's gravity.
In simple words: Aeroplanes fly in Earth's air, while spacecraft travel in outer space and are much faster.

🎯 Exam Tip: The key differences are their operating environment (atmosphere vs. space) and their speed capabilities.

 

Question 2. If you go to the space, what preparations you would take?
Answer: If I were to go into space, I would need extensive training and preparation. This includes practicing eating special kinds of food that don't float away, learning to perform tasks in specific conditions of weightlessness, and understanding how to live without Earth's gravity. I would also need to train for high pressure changes and the feeling of weightlessness.
In simple words: I would prepare by learning to eat special food, work in new conditions, and live without gravity and pressure.

🎯 Exam Tip: Mention practical preparations like specialized food, training for weightlessness, and understanding changes in pressure.

 

Question 3. Which Indians have travelled to the space? Gather information about them from your school's library.
Answer: Rakesh Sharma was the first Indian citizen to travel to space. Kalpana Chawla and Sunita Williams are two famous women astronauts of Indian origin who also journeyed into space. These individuals have inspired many with their pioneering space travels.
In simple words: Rakesh Sharma was the first Indian in space. Kalpana Chawla and Sunita Williams are other famous Indian-origin astronauts.

🎯 Exam Tip: Remember the names of at least one male and two female Indian-origin astronauts who have traveled to space.

 

Question 4. How would our earth look like when seen from the moon?
Answer: When viewed from the moon, our Earth would appear as a beautiful, glowing blue and white ball. It would look like a marble suspended in the dark expanse of space, often with visible cloud patterns and oceans. It stands out brightly against the dark sky.
In simple words: From the moon, Earth would look like a round, blue and white ball.

🎯 Exam Tip: Describe Earth's appearance from space, highlighting its spherical shape and colors (blue for oceans, white for clouds).

 

Question 2. Can we go to the space?
Answer: Yes, humans can travel to space. Space travel is made possible through advanced technology and specialized vehicles. It is no longer just a dream but a reality for trained astronauts.
In simple words: Yes, people can go to space.

🎯 Exam Tip: State a clear 'yes' and briefly mention the means (technology/vehicles).

 

Question 3. How can we go to the space?
Answer: We can travel to space by using a specially designed vehicle called a spacecraft. These powerful machines are built to withstand the extreme conditions of space and carry people and equipment beyond Earth's atmosphere.
In simple words: We go to space in a spacecraft.

🎯 Exam Tip: The key term here is "spacecraft" as the mode of transport.

Think and write the answers of the following (Page No. 146)

 

Question 1. Imagine that you are going on space travel. Describe your experiences of space travel in detail in your notebook.
Answer: If I were traveling to space, I would feel excited and a little nervous. I would see amazing things like Earth looking like a blue marble, and countless twinkling stars. Floating in zero gravity would be a strange and fun experience. I would love to see the sun rise and set multiple times a day from space, and observe other planets and galaxies. It would be a journey of a lifetime.
In simple words: I would feel excited, see Earth from far away, float due to no gravity, and see many stars.

🎯 Exam Tip: Describe what you would see (Earth, stars, planets) and what you would feel (excitement, weightlessness).

Explore and collect (Page No. 146)

 

Question 1. Gather information about the astronauts and paste their pictures in your notebook.
Answer: Students should research different astronauts, learn about their missions, and find pictures to put in their notebooks. This activity helps in understanding the history and reality of space exploration. It's a great way to discover more about space heroes.
In simple words: Students should find facts and photos of famous astronauts for their notebook.

🎯 Exam Tip: Choose well-known astronauts like Neil Armstrong, Kalpana Chawla, or Sunita Williams for your research.

Observe and tell the answers of the following (Page No. 147)

 

Question 1. Write the name of the planet nearest to the sun.
Answer: Mercury is the planet that is closest to the sun. Its proximity to the sun means it experiences extreme temperatures. It is the first planet in our solar system's order.
In simple words: Mercury is the planet closest to the sun.

🎯 Exam Tip: Remember the order of planets from the sun, starting with Mercury.

 

Question 3. Write the names of the 8 planets from the sun in sequence.
Answer: The eight planets in our solar system, listed in order from the sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Each planet has unique characteristics and orbits the sun.
In simple words: The planets from the sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

🎯 Exam Tip: Use a mnemonic (like "My Very Eager Mother Just Served Us Noodles") to remember the planets in order.

 

Question 4. Do the moon, the satellite of the earth, revolves around it?
Answer: Yes, the moon, which is Earth's natural satellite, revolves around our planet. This orbital motion causes the different phases of the moon we observe. The moon circles the Earth roughly once every 27 days.
In simple words: Yes, the moon goes around the Earth.

🎯 Exam Tip: State clearly that the moon revolves around the Earth, not vice versa.

 

Question 5. Observe the changes in the shape of the moon in the given picture.Write the dates (tithi) on which these views of the moon,are visible.
Answer: The picture shows different phases of the moon as it changes shape throughout the lunar cycle. The moon's appearance gradually shifts from a tiny crescent to a full circle and then back again. Here are the phases and their corresponding tithis:
Picture 1: Ditiya (a thin crescent, slightly visible)
Picture 2: Panchmi (a thicker crescent, about half visible)
Picture 3: Teras (almost full, only a small part missing)
Picture 4: Purnima (the full moon, completely round and bright)
The moon's phases are a beautiful display of its orbit around Earth.

In simple words: The moon's shape changes over days. It goes from a tiny sliver (Ditiya) to half (Panchmi), almost full (Teras), and then a full bright circle (Purnima).

🎯 Exam Tip: When describing moon phases, link the visual shape (crescent, full) with its traditional Indian calendar name (tithi).

Explore and write the answers of the following (Page No. 147)

 

Question 1. On the dates (tithi) corresponding to the images of the moon shown above, which are the festivals, functions, fairs etc. that we celebrate?
Answer: On specific moon dates (tithis), various festivals, functions, and fairs are celebrated in India. For example, Basantpanchmi and Shivratri are important festivals where many fairs are organized. Many celebrations are timed according to the lunar calendar. Holi is celebrated on Purnima, Diwali on Amavasya, and Teej on Tritiya, showing how the moon guides our festive calendar.
In simple words: Many festivals like Basantpanchmi and Shivratri have fairs on special moon dates (tithis).

🎯 Exam Tip: Mention at least two specific festivals or events that are traditionally associated with particular moon phases or tithis.

 

Question 3. What do the members of your family do during these days?
Answer: During these festive days, family members often observe fasts and participate in worshipping gods and goddesses. It's a time for spiritual reflection and community engagement. They also practice acts of charity, such as distributing food and clothes to people in need.
In simple words: My family fasts, worships, and gives food and clothes to poor people during these special days.

🎯 Exam Tip: Include both religious practices (fasting, worship) and social customs (charity, community gatherings).

Learnt, understood and now tell (Page No. 148)

 

Question 1. Who is the head of the solar system?
Answer: The sun is the head of our solar system. Its massive gravitational pull keeps all the planets, asteroids, and other celestial bodies in orbit around it. The sun provides light and heat to our entire solar system.
In simple words: The sun is the center and head of our solar system.

🎯 Exam Tip: Clearly identify the sun as the central body and mention its role in holding the system together.

 

Question 2. Make a list of Indian astronauts.
Answer: The notable Indian astronauts who have traveled to space include Rakesh Sharma, Kalpana Chawla, and Sunita Williams. These individuals have made significant contributions to space exploration. They are role models for aspiring scientists and astronauts.
In simple words: Rakesh Sharma, Kalpana Chawla, and Sunita Williams are Indian astronauts.

🎯 Exam Tip: List at least three prominent Indian-origin astronauts; Rakesh Sharma is essential as the first Indian in space.

 

Question 3. Why are the stars not visible during day time?
Answer: Stars are not visible during the day because of the sun's extremely bright light. The sun's light scatters in Earth's atmosphere, making the sky appear blue and overpowering the faint light from distant stars. Our eyes cannot detect the dimmer starlight against the bright daytime sky.
In simple words: We cannot see stars during the day because the sun's bright light makes the sky too bright.

🎯 Exam Tip: The main reason is the intense brightness of the sun, which overshadows the dimmer starlight.

 

Question 4. Which planet has a ring around it?
Answer: Saturn is the planet famous for its prominent and beautiful ring system. These rings are made up of countless small particles of ice and rock. They are the most extensive and visible rings of any planet in our solar system.
In simple words: Saturn is the planet with rings around it.

🎯 Exam Tip: Remember Saturn is uniquely identified by its famous ring system.

Other Important Questions

Objective Type Questions :

 

Question 2. Rakesh Sharma is remembered with honour because :
(a) He was the first Indian astronaut
(b) He was the first mountaineer
(c) He was the first geo-scientist
(d) He invented the medicine for cancer.
Answer: (a) He was the first Indian astronaut
In simple words: Rakesh Sharma is honored for being the first Indian person to go to space.

🎯 Exam Tip: Always remember Rakesh Sharma's key achievement as India's first astronaut.

 

Question 3. Many small are seen twinkling in the night sky.
(a) Stars
(b) Sun
(c) Spacecraft
(d) Moon
Answer: (a) Stars
In simple words: Small, twinkling lights in the night sky are stars.

🎯 Exam Tip: The key descriptor "twinkling" is characteristic of stars due to atmospheric effects.

 

Question 4 star helps the travellers to locate the right direction.
(a) Broken
(b) Polar
(c) Moon
(d) Saptarishimandal
Answer: (b) Polar
In simple words: The Polar star helps travelers find their way.

🎯 Exam Tip: The Polar star (Dhruv Tara) is crucial for navigation because it remains nearly fixed in the northern sky.

 

Question 5. The largest planet of the solar system.
(a) Earth
(b) Jupiter
(c) Saturn
(d) Mars
Answer: (b) Jupiter
In simple words: Jupiter is the biggest planet in our solar system.

🎯 Exam Tip: Remember Jupiter as the largest planet, significantly bigger than all others.

 

Question 6. A special type of is used to go to the space.
(a) Aeroplane
(b)Ship
(c) Helicopter
(d) Spacecraft
Answer: (d) Spacecraft
In simple words: A spacecraft is needed to travel into space.

🎯 Exam Tip: The term "spacecraft" specifically refers to vehicles designed for space travel.

 

Question 7. First Indian astronaut who went to space.
(a) Rakesh Sharma
(b) Kalpana Chawla
(c) Sunita Williams
(d) Bachendri Pal
Answer: (a) Rakesh Sharma
In simple words: Rakesh Sharma was the first Indian astronaut.

🎯 Exam Tip: Recall Rakesh Sharma's historical achievement as the first Indian in space.

Fill in the blanks:

 

Question 1. Moon shines through the light of.............. (own / sun)
Answer: Moon shines through the light of **sun**.
In simple words: The moon gets its light from the sun.

🎯 Exam Tip: Remember that the moon is not a source of light but reflects sunlight.

 

Question 2. Polar, star indicates ............ direction. (east / north)
Answer: Polar, star indicates **north** direction.
In simple words: The Polar star always points north.

🎯 Exam Tip: The Polar Star is a reliable guide for finding the North direction.

 

Question 3. On the day of ............ the moon is not visible. (amabasya / sun)
Answer: On the day of **amabasya** the moon is not visible.
In simple words: The moon cannot be seen on Amavasya (new moon day).

🎯 Exam Tip: Associate Amavasya with the phase where the moon is completely dark or invisible from Earth.

 

Question 4. The moon revolves around the ............ (sun / earth)
Answer: The moon revolves around the **earth**.
In simple words: The moon goes around the Earth.

🎯 Exam Tip: Understand that the moon is Earth's natural satellite, orbiting around it.

 

Question 5. There are ............ planets of the sun. (8/9)
Answer: There are **8** planets of the sun.
In simple words: Our solar system has 8 planets.

🎯 Exam Tip: Confirm that there are officially eight planets in our solar system after Pluto was reclassified.

Very Short Answer Type Questions :

 

Question 2. From whose light does the moon shine?
Answer: The moon shines by reflecting the light of the sun. It does not produce its own light. This reflected sunlight makes the moon visible to us on Earth.
In simple words: The moon shines from the light it gets from the sun.

🎯 Exam Tip: Emphasize that the moon reflects light, it doesn't generate it.

 

Question 3. Who is the first Indian astronaut to go to the space?
Answer: Rakesh Sharma was the first Indian astronaut to journey into space. His mission aboard the Soviet Salyut 7 space station marked a historic moment for India in space exploration. He made history by being the first Indian in space.
In simple words: Rakesh Sharma was the first Indian astronaut.

🎯 Exam Tip: Always associate Rakesh Sharma with the title of the first Indian astronaut.

 

Question 4. Why is the moon called the satellite of the earth?
Answer: The moon is called the satellite of the Earth because it continuously revolves around our planet. A satellite is any object that orbits another larger object. The moon is a natural satellite, unlike artificial ones made by humans.
In simple words: The moon is Earth's satellite because it goes around the Earth.

🎯 Exam Tip: The definition of a satellite is an object orbiting another, which the moon does around Earth.

 

Question 5. Write the names of 2 women from India.
Answer: Two prominent women of Indian origin who have traveled to space are Kalpana Chawla and Sunita Williams. Both have made significant contributions as astronauts. They have inspired many young girls to pursue careers in science and space.
(a) Kalpana Chawla
(b) Sunita Williams
In simple words: Kalpana Chawla and Sunita Williams are two Indian-origin women who went to space.

🎯 Exam Tip: Remember these two names as key female figures in Indian space history.

 

Question 6. How many planets are there in our solar system?
Answer: There are 8 planets in our solar system. These planets orbit the sun in distinct paths. They include Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
In simple words: Our solar system has 8 planets.

🎯 Exam Tip: The current scientific consensus recognizes eight major planets in our solar system.

 

Question 7. A collection of seven great stages or saptarishi constellation is called.
Answer: A collection of seven great sages, or a group of seven bright stars forming a recognizable pattern, is called the Saptarishimandal. This constellation is commonly known as the Big Dipper or Ursa Major in Western astronomy. It is an easily identifiable constellation in the northern sky.
In simple words: A group of seven bright stars called the Saptarishi constellation is also known as Saptarishimandal.

🎯 Exam Tip: Use the term "Saptarishimandal" and mention its common name like "Big Dipper" for a complete answer.

 

Question 8. In saptarishimandal, which star always lies in the northern direction?
Answer: In the Saptarishimandal (Big Dipper), the two stars at the end of the "ladle" point directly to the Polar Star. The Polar Star (Dhruv Tara) itself always appears in the northern direction. This makes it a crucial navigation guide at night.
In simple words: The Polar Star always shows the northern direction.

🎯 Exam Tip: Note that the Polar Star is found using the Saptarishi constellation, and it helps identify North.

 

Question 10. Which star helps the travellers to locate the right direction during the night?
Answer: The Polar Star (Dhruv Tara) is the star that helps travelers locate the right direction during the night. It remains almost stationary in the sky, always pointing towards the North Pole, making it an excellent celestial compass. Its constant position has guided sailors and explorers for centuries.
In simple words: The Polar Star helps travelers find directions at night.

🎯 Exam Tip: The Polar Star is unique because it stays still in the night sky, indicating North.

 

Question 11. In which day is the moon completely visible?
Answer: The moon is completely visible on the day of the full moon, known as Poornima. On this day, the entire face of the moon is illuminated by the sun, appearing as a full, bright circle in the night sky. It's a beautiful sight that happens once a lunar month.
In simple words: The moon is completely visible on the full moon day (Poornima).

🎯 Exam Tip: Identify Poornima as the full moon day when the moon is fully illuminated.

 

Question 12. On which day, the moon is not visible?
Answer: The moon is not visible on the day of the dark moon, which is called Amavasya. During this phase, the side of the moon facing Earth is not lit by the sun, so it blends into the dark night sky. This happens when the moon is between the Earth and the sun.
In simple words: The moon is not visible on Amavasya (new moon day).

🎯 Exam Tip: Connect Amavasya with the new moon phase, where the moon is invisible.

Short Answer Type Questions :

 

Question 1. What is saptarishimandal?
Answer: The Saptarishimandal is a distinct constellation made up of seven extremely bright stars. It is always found in the northern direction of the sky. This formation is also known as the collection of seven great sages or the Saptarishi constellation (Ursa Major). It helps in finding the Polar Star.
In simple words: Saptarishimandal is a group of seven bright stars, also called the Saptarishi constellation, found in the northern sky.

🎯 Exam Tip: Define Saptarishimandal as a constellation of seven bright stars in the northern sky, possibly mentioning its alternative names.

 

Question 2. Where is the polar star situated? What is its importance?
Answer: The Polar Star is an extremely bright star located at the upper part of the Saptarishi-mandal, and it always points towards the northern direction. Its importance lies in its role as a reliable guide for travelers during the night. Because it remains nearly fixed in the northern sky, it helps people find their way. The four stars in Saptarishimandal form a square, and the other three stars look like a tail, helping to point towards the Polar Star.
In simple words: The Polar Star is in the northern sky, near the Saptarishi constellation. It is important because it always shows the North direction, helping travelers at night.

🎯 Exam Tip: Explain both the location (northern sky, near Saptarishi) and the practical importance (navigation for travelers).

 

Question 4. What is the breaking star?
Answer: A "breaking star" is commonly referred to as a meteor or a "shooting star." It is essentially a piece of meteorite mass that burns up when it enters Earth's atmosphere. The friction with the air causes it to heat up and glow brightly, creating a streak of light across the sky. Most meteors burn up completely before reaching the ground.
In simple words: A breaking star is a burning rock from space (meteorite) that lights up when it enters Earth's air.

🎯 Exam Tip: Define a breaking star as a meteor or meteorite burning in Earth's atmosphere.

 

Question 5. Why does the moon look big and the stars look small?
Answer: The moon appears large because it is relatively close to Earth compared to the stars. The moon is our nearest celestial neighbor. On the other hand, stars are incredibly far away from us, sometimes millions or billions of light-years distant. Even though stars are much larger than the moon or even the sun, their immense distance makes them appear as tiny, twinkling points of light in the sky.
In simple words: The moon looks big because it is close to Earth. Stars look small because they are very, very far away.

🎯 Exam Tip: The key factor is distance: closer objects appear larger, and farther objects appear smaller, regardless of their actual size.

Essay type questions

 

Question 1. Does the shape of the moon always look the same?
Answer: No, the shape of the moon does not always look the same; it constantly changes. The moon is Earth's natural satellite and revolves around it. It does not have its own light but shines by reflecting sunlight. The visible size of the moon increases from the first lunar day (Ekum) until the full moon day (Poornima) and then gradually decreases afterward. On the dark moon day (Amavasya), the moon is not visible at all. This cycle of increasing and decreasing visible shape is known as the phases of the moon. Each phase, like crescent, half, and full, tells a unique story of its orbit.
In simple words: No, the moon's shape changes. It grows from a thin line to a full circle (Poornima) and then shrinks until it cannot be seen (Amavasya), showing different phases.

🎯 Exam Tip: Clearly state that the moon's shape changes and explain the cycle from new moon (Amavasya) to full moon (Poornima) and back.

 

Question 2. What is a spacecraft?
Answer: A spacecraft is a special type of vehicle specifically designed for travel beyond Earth's atmosphere into outer space. These advanced machines are built to carry astronauts, satellites, or probes for scientific research and exploration. Spacecraft are often much faster than aeroplanes, sometimes flying 50 times faster, and require a large amount of fuel to achieve the speeds needed to escape Earth's gravity and travel across vast distances in space. They have complex systems to support life and function in extreme conditions.
In simple words: A spacecraft is a special vehicle used to travel in space. It is much faster than an aeroplane and needs a lot of fuel.

🎯 Exam Tip: Define a spacecraft by its purpose (space travel), its speed relative to aeroplanes, and its fuel requirements.

 

Question 3. Describe the main points about the sky.
Answer: The sky is a vast and dynamic space above us, filled with many wonders. Here are the main points about what we observe in the sky:
(i) At night, we see countless small stars twinkling. These stars are distant suns.
(ii) The moon also appears in the night sky, looking round, shining, and beautiful. It changes its shape during its cycle.
(vii) There are collections of seven great sages or Saptarishi Constellations (Saptarshimandal), which are easily recognizable star patterns.
(viii) The Polar Star is an extremely bright star that always stays in the northern direction. It helps travelers find their way at night by pointing North. The sky is a window to the universe, revealing many celestial bodies and phenomena.
In simple words: The sky at night has many twinkling stars and the beautiful moon. We can also see the Saptarishi constellation and the North Star, which helps people find directions.

🎯 Exam Tip: Include both the visible celestial bodies (stars, moon) and significant constellations (Saptarishi) along with their unique characteristics (twinkling, directional guidance).

 

Question 4. Make a diagram of solar system and explain it.
Answer: The solar system consists of the sun and all the celestial bodies that orbit around it. A diagram of the solar system would show the sun at the center with planets revolving in their elliptical paths. Here's an explanation:
(i) The sun is the central and most massive body, acting as the head of the solar system.
(ii) Our solar system has eight planets, and all of them revolve around the sun in fixed orbits.
(iii) The names of these eight planets, in order from the sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
(iv) Mercury is the planet nearest to the Sun, while Neptune is the farthest planet.
(v) Mercury is also the smallest planet in the solar system, and Jupiter is the largest.
(vi) We live on Earth, which is the only known planet where favorable conditions for life, such as liquid water and breathable atmosphere, are available.
In simple words: The solar system has the sun at its center and eight planets orbiting it. Mercury is smallest and closest, Jupiter is largest, and Earth is where we live because it has life.

🎯 Exam Tip: For the explanation, list the planets in order, mention the largest/smallest, and highlight Earth's unique ability to support life.

 

Question 5. Draw the 3 pictures of the changes in the phases of the moon from Amabasvato Poornimaand then explain them. (Model Paper)
Answer: The moon's appearance changes in a cycle from Amavasya (new moon) to Poornima (full moon) and back. This change in visible shape is due to the varying amounts of sunlight reflecting off its surface as it orbits Earth. The size of the moon appears to increase from the 1st lunar day (Ekum) until the day of the full moon (Poornima), after which it begins to decrease. On the day of the dark moon (Amavasya), the moon is completely invisible. The pictures show these gradual changes, with Ditiya being a thin crescent, Panchami a growing crescent, and Poornima being the full, bright circle. These phases are a beautiful celestial dance.

In simple words: The moon's shape changes over time. It grows from a new moon (Amavasya) to a full moon (Poornima) and then shrinks again. This cycle is called moon phases.

🎯 Exam Tip: Clearly describe the transition from Amavasya to Poornima, mentioning how the illuminated part of the moon changes visually.

 

Question 6. There are eight planets in the solar system Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Answer the following questions.
(a) What is the name of the planet which is nearest to the Sun.
Answer: Mercury is the planet nearest to the Sun. It completes its orbit around the sun faster than any other planet due to its close proximity. Its closeness to the sun makes it very hot.
In simple words: Mercury is the closest planet to the sun.

🎯 Exam Tip: For naming planets, always ensure the correct spelling and position from the sun.

 

(b) Which is the largest planet in the solar system?
Answer: Jupiter is the largest planet in the solar system. It is a gas giant, so massive that all the other planets could fit inside it. Jupiter is easily recognizable by its distinct bands of clouds and the Great Red Spot.
In simple words: Jupiter is the biggest planet in our solar system.

🎯 Exam Tip: Clearly state Jupiter as the largest and mention it is a gas giant for extra detail.

 

(c) On which planet, do you live?
Answer: We live on the planet Earth. Earth is unique in our solar system for having liquid water on its surface and an atmosphere suitable for life. It is the third planet from the sun, and our only home known to support life.
In simple words: We live on the planet Earth.

🎯 Exam Tip: Identify Earth as our home planet and briefly mention its life-supporting features.

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