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Worksheet: Beyond Earth | Science for Class 6 PDF Download

Multiple Choice Questions (MCQs)

Q1: What is the main function of stars in ancient navigation?
(a)
They provide heat.
(b) They help travelers find their way.
(c) They create light pollution.
(d) They are used for decoration.

Q2: Which constellation is known as "The Hunter"?
(a) 
Canis Major
(b) Orion
(c) Taurus
(d) Ursa Major

Q3: What do you call the star that remains in the same position in the night sky?
(a)
Sirius
(b) Polaris
(c) Betelgeuse
(d) Vega

Q4: How many official constellations are recognized by the International Astronomical Union (IAU)?
(a) 
88
(b) 100
(c) 72
(d) 50

Q5: What is the closest star to Earth after the Sun?
(a) 
Alpha Centauri
(b) Proxima Centauri
(c) Sirius
(d) Betelgeuse

Fill in the Blanks

Q1: The imaginary lines that connect stars to form patterns are called __________.

Q2: The __________ is the star at the center of our Solar System.

Q3: __________ pollution makes it difficult to see stars in big cities.

Q4: The __________ is known as the Red Planet.

Q5: The __________ takes about 27 days to orbit around the Earth.

True or False

Q1: Stars do not emit their own light.

Q2: The Big Dipper is part of the constellation Ursa Major.

Q3: The Milky Way Galaxy contains only our Solar System.

Q4: Asteroids are mostly found between the orbits of Earth and Mars.

Q5: The Sun is the closest star to Earth.

Match the Following

Match the Following

You can access the solutions to this worksheet here.

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FAQs on Worksheet: Beyond Earth

1. What are the main differences between planets and stars in our solar system?
Ans. Stars are massive celestial bodies that produce their own light and heat through nuclear fusion, while planets are smaller objects that orbit stars and reflect their light. The Sun is our star, and Earth is one of eight planets orbiting it. Stars appear to twinkle because of Earth's atmosphere, whereas planets shine steadily. Understanding these distinctions helps students grasp the structure of space beyond Earth and recognize celestial objects in the night sky.
2. How do scientists measure distances between Earth and other celestial objects in space?
Ans. Scientists measure cosmic distances using units like astronomical units (AU), light-years, and parsecs rather than kilometres. One AU equals the distance from Earth to the Sun-approximately 150 million kilometres. Light-years measure how far light travels in one year through space. For nearby objects like the Moon, scientists use direct measurement techniques, while distant stars and galaxies require telescope observations and mathematical calculations based on stellar brightness and movement patterns.
3. What exactly is a galaxy and how many stars does it contain?
Ans. A galaxy is a massive system of stars, gas, dust, and dark matter held together by gravity. Galaxies contain billions to trillions of stars orbiting a common centre. Our Milky Way galaxy contains approximately 100 to 400 billion stars, with our Solar System positioned in one of its spiral arms. Galaxies come in different shapes-spiral, elliptical, and irregular-and studying them reveals how vast and complex the universe truly is beyond Earth.
4. Why do we see different constellations at different times of the year from Earth?
Ans. Earth's position changes as it orbits the Sun throughout the year, causing different constellations to become visible from our vantage point. As Earth moves, our night sky view shifts, revealing new star patterns while others disappear below the horizon. This apparent motion of constellations is called precession. Students studying beyond Earth concepts learn that constellations aren't actually moving-Earth's changing orbital position simply exposes different regions of space, making seasonal stargazing patterns predictable and observable.
5. What is the difference between a meteor, meteoroid, and meteorite in space terminology?
Ans. A meteoroid is a small rock or dust particle travelling through space; a meteor is the bright streak seen when a meteoroid burns up entering Earth's atmosphere, often called a "shooting star"; a meteorite is the solid remnant that survives atmospheric entry and reaches Earth's surface. These three terms describe different stages of the same cosmic object's journey. Learning these distinctions helps Class 6 students understand space phenomena and distinguish between what they observe in the night sky and actual objects from beyond Earth.
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