College Entrance Exam and Science High School Entrance Test Tips Quiz
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Questions and Answers

What quality did Johannes Kepler demonstrate when he changed his notion about planetary motion?

  • Intellectual honesty (correct)
  • Opinionatedness
  • Close-mindedness
  • Creativity

    • What did Isaac Newton show by acknowledging the contributions of Galileo and others?

  • Open-mindedness (correct)
  • Critical thinking
  • Intellectual dishonesty
  • Opinionatedness

    • What quality did Marie Curie and Pierre demonstrate through their hard work with uranium ore?

  • Perseverance (correct)
  • Opinionatedness
  • Close-mindedness
  • Creativity

    • How did John Dalton support his atomic theory?

    <p>Using hard evidence</p> Signup and view all the answers

    What approach did Albert Einstein take in developing his own theories?

    <p>Creativity and critical thinking</p> Signup and view all the answers

    How is technology defined according to the text?

    <p>The application of scientific knowledge to practical purposes</p> Signup and view all the answers

    What is the purpose of gems?

    <p>To be used as ornaments</p> Signup and view all the answers

    Which minerals are mentioned as examples of valuable ones?

    <p>Limestone, clay, and quartz</p> Signup and view all the answers

    What do precious stones like diamonds, rubies, and emeralds belong to?

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

    Which layer surrounding the Earth is crucial for life on Earth?

    <p>Earth's Atmosphere</p> Signup and view all the answers

    What do gems provide to humans according to the text?

    <p>Protection against meteorites</p> Signup and view all the answers

    Why are gold and silver considered valuable according to the text?

    <p>Because they are beautiful and rare</p> Signup and view all the answers

    What happens when a star runs out of energy and shuts down?

    <p>It becomes a white dwarf</p> Signup and view all the answers

    Why are Brown Dwarfs also called failed stars?

    <p>They lack enough energy to be true stars</p> Signup and view all the answers

    What is the main reason that makes a white dwarf emit a white glow?

    <p>High temperature</p> Signup and view all the answers

    What is the primary outcome of a supernova explosion?

    <p>Shrinking into a neutron star</p> Signup and view all the answers

    Why are pulsars believed to give off bursts of radio waves at regular intervals?

    <p>Because they are spinning neutron stars</p> Signup and view all the answers

    What makes quasars believed to be the most remote objects in the universe?

    <p>Their great distance from Earth</p> Signup and view all the answers

    What is the freezing point of water in Fahrenheit?

    <p>32</p> Signup and view all the answers

    Which temperature scale is also known as the centigrade scale?

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

    What is the formula to convert a temperature from Celsius to Fahrenheit?

    <p>$F = \frac{9}{5}C + 32$</p> Signup and view all the answers

    Which temperature scale is based on 0 for the freezing point of water and 100 for the boiling point of water?

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

    In the metric system, what does 'kilo' represent in terms of magnitude?

    <p>$10^{3}$</p> Signup and view all the answers

    'Micro' in the metric system represents which magnitude?

    <p>$10^{-6}$</p> Signup and view all the answers

    What makes black holes so dense that not even light can escape?

    <p>Total gravitational collapse of a massive star or group of stars</p> Signup and view all the answers

    How does a black hole differ from a nebula?

    <p>A black hole is created by the total gravitational collapse of stars, while a nebula is made up of dust and gas</p> Signup and view all the answers

    What characteristic sets black holes apart from galaxies?

    <p>The fact that not even light can escape from them due to their density</p> Signup and view all the answers

    What is the main cause of the creation of a black hole?

    <p>'Implosion' rather than 'explosion' of a star due to gravity</p> Signup and view all the answers

    What is the primary contributor to the extreme density of a black hole?

    <p>The total gravitational collapse of a massive star or group of stars</p> Signup and view all the answers

    Why is it mentioned that black holes pour out tremendous amounts of light and microwave radiation?

    <p>To compare them with galaxies and their luminosity</p> Signup and view all the answers

    Study Notes

    Scientific Contributions

    • Johannes Kepler demonstrated open-mindedness when he changed his notion about planetary motion.
    • Isaac Newton showed humility by acknowledging the contributions of Galileo and others.
    • Marie Curie and Pierre demonstrated perseverance through their hard work with uranium ore.
    • John Dalton supported his atomic theory by providing evidence.
    • Albert Einstein took a creative and innovative approach in developing his own theories.

    Gems and Minerals

    • Technology is defined as the application of scientific knowledge for practical purposes.
    • The purpose of gems is ornamentation.
    • Valuable minerals mentioned include diamonds, rubies, and emeralds.
    • These precious stones belong to the gemstone category.
    • Gems provide aesthetic value to humans.

    Valuable Resources

    • Gold and silver are considered valuable due to their rarity and usefulness.
    • When a star runs out of energy and shuts down, it becomes a white dwarf.
    • Brown Dwarfs are also called failed stars because they do not have enough energy to sustain nuclear fusion.
    • A white dwarf emits a white glow due to its high surface temperature.
    • The primary outcome of a supernova explosion is the creation of heavy elements.
    • Pulsars are believed to give off bursts of radio waves at regular intervals due to their rapid rotation.
    • Quasars are believed to be the most remote objects in the universe because of their extreme distance.

    Temperature and Measurement

    • The freezing point of water is 32°F.
    • The Celsius scale is also known as the centigrade scale.
    • The formula to convert a temperature from Celsius to Fahrenheit is F = (9/5)C + 32.
    • The Celsius scale is based on 0 for the freezing point of water and 100 for the boiling point of water.

    Metric System

    • 'Kilo' in the metric system represents 1000 times the magnitude of a unit.
    • 'Micro' in the metric system represents one-millionth of a unit.

    Black Holes

    • Black holes are so dense that not even light can escape due to their extreme gravity.
    • A black hole differs from a nebula in that it is a region of space with infinite density.
    • What sets black holes apart from galaxies is their extreme density.
    • The main cause of the creation of a black hole is the death of a massive star.
    • The primary contributor to the extreme density of a black hole is its infinite gravitational attraction.
    • Black holes are mentioned to pour out tremendous amounts of light and microwave radiation due to their active galactic nuclei.

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    Description

    Test your knowledge on tips for conquering college entrance exams like UPCAT, ACET, USTET, DLSUCET, PSHS-NCE, and other science high school entrance tests. Learn about valuable minerals such as gold, silver, limestone, clay, quartz, and gems.

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