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 Systems for looking into Space 50 Flashcards |
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What is the primary purpose of space observation systems such as telescopes? |
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Telescopes observe distant celestial objects.
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Telescopes were originally invented by the Dutch for what purpose? |
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Telescopes helped sailors spot ships.
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Fill in the blank: Galileo was the first to observe that Jupiter has ___, which was a groundbreaking discovery. |
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 Moons |
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True or False: Galileo's telescope was less advanced than modern telescopes, which allow for clearer observations of celestial bodies. |
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True; Galileo's telescope was a significant advancement for its time, but it does not provide the clarity and detail that modern telescopes do. |
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What significant observation did Galileo make about Venus? |
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Galileo observed that Venus has phases, similar to the Moon, appearing to change shape as it orbits the Sun. |
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Riddle: I make faraway objects appear larger, bend light with my curves, and help you see the stars clearer at night. What am I? |
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 A telescope |
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Explain how modern telescopes enhance our ability to study celestial bodies. |
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Modern telescopes enhance celestial studies.
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Fill in the blank: The Milky Way is made of ___ stars, as demonstrated by Galileo's observations. |
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 Billions of |
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What is the significance of telescopes in astronomy? |
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Telescopes enable star observation effectively.
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The Southern African Large Telescope (SALT) is located near ___ in South Africa. |
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 Sutherland |
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True or False: The light from some stars takes millions of years to reach Earth. |
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 True |
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Fill in the blank: The SALT uses ___ and a large mirror to collect and focus light. |
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 Lenses |
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What operation feature allows the SALT to observe the sky? |
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 It is housed in a dome that opens at night. |
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Riddle: I can show you stars that are far away, some of my light takes millions of years to display. What am I? |
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 A telescope |
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How do large telescopes equipped with advanced technology contribute to our understanding of the universe? |
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They study the sky by capturing detailed images of celestial objects and phenomena, enhancing our knowledge of the cosmos. |
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Fill in the blank: Telescopes reveal ___ of stars that cannot be seen with the naked eye. |
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 Thousands of millions |
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What is the primary purpose of the Square Kilometre Array (SKA)? |
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SKA collects radio waves.
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Fill in the blank: The total area of all dishes in the SKA equals ___ square kilometers. |
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 One |
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True or False: The SKA is located solely in South Africa. |
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False; the SKA has dishes in other countries including Australia and several African nations to enhance image quality. |
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What role does the computer play in the operation of the SKA? |
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The computer processes the weak radio signals collected by the dishes and combines them to produce a clear image of celestial objects. |
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Riddle: I am a collection of thousands of dishes, receiving signals from space, helping scientists explore the universe's vastness. What am I? |
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 The Square Kilometre Array (SKA). |
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Fill in the blank: The SKA consists of thousands of radio dishes that operate similarly to ___ dishes. |
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 Satellite TV |
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Why was there a competition between South Africa and Australia regarding the SKA? |
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Competition for SKA Hosting
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Short Answer: How does the array system in the SKA improve the quality of the images produced? |
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The array system allows multiple dishes to work together, collecting signals from a wider area, which enhances the clarity and quality of the images. |
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What significant astronomical discoveries did Galileo Galilei make in 1609 using a telescope? |
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 Galileo Galilei discovered Jupiter’s moons, Saturn’s rings, and the true nature of the Milky Way. |
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