Gr 8 Natural Sciences Ch 4.2: Our nearest star
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Questions and Answers

What is the approximate distance between the Sun and Earth?

  • 150 million kilometers (correct)
  • 100 million kilometers
  • 200 million kilometers
  • 250 million kilometers

    • Which of the following stars is part of a triple star system?

  • The Sun
  • Alpha Centauri A (correct)
  • The Southern Cross
  • Proxima Centauri

    • What is the name of the constellation that contains the Pointers?

  • The Big Dipper
  • Ursa Major
  • Orion
  • The Southern Cross (correct)

    • Who discovered Proxima Centauri?

    <p>Robert Innes</p> Signup and view all the answers

    What is the name of the star system that Proxima Centauri is a part of?

    <p>Alpha Centauri</p> Signup and view all the answers

    What is the average distance between Alpha Centauri A and B?

    <p>11 times the distance between Earth and the Sun</p> Signup and view all the answers

    What is the characteristic of the brightest star among the Pointers?

    <p>It is slightly orange</p> Signup and view all the answers

    What is the closest star to our Solar System?

    <p>Proxima Centauri</p> Signup and view all the answers

    What is the main reason why only a few hundred stars are visible in urban areas?

    <p>Light pollution</p> Signup and view all the answers

    What is the characteristic that defines a constellation?

    <p>A group of stars that, when observed from Earth, forms a recognizable pattern</p> Signup and view all the answers

    What is the relationship between Alpha Centauri A and B?

    <p>They orbit each other</p> Signup and view all the answers

    What is true about Proxima Centauri's visibility?

    <p>It is less visible due to its distance from Alpha Centauri A and B</p> Signup and view all the answers

    What is a notable feature of the Southern Cross constellation?

    <p>Its two bright stars, known as the Pointers</p> Signup and view all the answers

    What is the approximate number of stars in the Milky Way Galaxy?

    <p>Billions</p> Signup and view all the answers

    What can be seen from Earth on a clear night without city lights?

    <p>Thousands of stars</p> Signup and view all the answers

    What is the relationship between Proxima Centauri and the Alpha Centauri system?

    <p>Proxima Centauri is part of the Alpha Centauri system</p> Signup and view all the answers

    What is unique about the proximity of Proxima Centauri to our Solar System?

    <p>It is the closest star to our Solar System.</p> Signup and view all the answers

    What is the significance of the Pointers in the Southern Cross constellation?

    <p>They point towards the South Pole.</p> Signup and view all the answers

    What is a characteristic of the stars in the Alpha Centauri system?

    <p>They have different distances from each other.</p> Signup and view all the answers

    What is true about the visibility of stars from Earth?

    <p>Only a few hundred stars are visible from urban areas due to light pollution.</p> Signup and view all the answers

    What is a common feature of constellations?

    <p>They are groups of stars that form recognizable patterns.</p> Signup and view all the answers

    What is the relationship between the Southern Cross constellation and Proxima Centauri?

    <p>Proxima Centauri is part of the Alpha Centauri system, which includes the Southern Cross constellation.</p> Signup and view all the answers

    What is unique about the Alpha Centauri system?

    <p>It is a triple star system.</p> Signup and view all the answers

    What is true about the Milky Way Galaxy?

    <p>It contains billions of stars.</p> Signup and view all the answers

    What is the primary factor that limits the number of stars visible from urban areas?

    <p>Light pollution</p> Signup and view all the answers

    Which of the following stars is not part of the Alpha Centauri system?

    <p>The Sun</p> Signup and view all the answers

    What is the characteristic of the pattern formed by the stars in a constellation?

    <p>Recognizable pattern</p> Signup and view all the answers

    What is the significance of the Pointers in the Southern Cross constellation?

    <p>They point towards the cross</p> Signup and view all the answers

    What is the relationship between Proxima Centauri and the Alpha Centauri system?

    <p>Proxima Centauri orbits Alpha Centauri A and B</p> Signup and view all the answers

    What is the primary reason why Proxima Centauri is less visible than Alpha Centauri A and B?

    <p>It is a smaller and fainter star</p> Signup and view all the answers

    What is the approximate number of stars that can be seen from Earth on a clear night without city lights?

    <p>Thousands</p> Signup and view all the answers

    What is the significance of Proxima Centauri's proximity to our Solar System?

    <p>It is the closest star to our Solar System</p> Signup and view all the answers

    What is the primary reason why Proxima Centauri is less visible than Alpha Centauri A and B?

    <p>It is a smaller and fainter star.</p> Signup and view all the answers

    What is unique about the proximity of Proxima Centauri to our Solar System?

    <p>It is the closest star to our Solar System.</p> Signup and view all the answers

    What is true about the visibility of stars from Earth?

    <p>Only a few hundred stars are visible from urban areas.</p> Signup and view all the answers

    What is a characteristic of the pattern formed by the stars in a constellation?

    <p>The stars form a recognizable pattern.</p> Signup and view all the answers

    What is the significance of the Pointers in the Southern Cross constellation?

    <p>They point towards the South Pole.</p> Signup and view all the answers

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