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 (B)</p> Signup and view all the answers

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

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

How is technology defined according to the text?

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

What is the purpose of gems?

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

Which minerals are mentioned as examples of valuable ones?

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

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

<p>Ornaments (C)</p> Signup and view all the answers

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

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

What do gems provide to humans according to the text?

<p>Protection against meteorites (C)</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 (A)</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 (C)</p> Signup and view all the answers

Why are Brown Dwarfs also called failed stars?

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

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

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

What is the primary outcome of a supernova explosion?

<p>Shrinking into a neutron star (A)</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 (C)</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 (A)</p> Signup and view all the answers

What is the freezing point of water in Fahrenheit?

<p>32 (A)</p> Signup and view all the answers

Which temperature scale is also known as the centigrade scale?

<p>Celsius (C)</p> Signup and view all the answers

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

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

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

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

'Micro' in the metric system represents which magnitude?

<p>$10^{-6}$ (C)</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 (C)</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 (C)</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 (D)</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 (D)</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 (D)</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 (B)</p> Signup and view all the answers

Flashcards

Open-mindedness (in science)

Remaining receptive to new ideas, even when they challenge existing beliefs.

Humility (in science)

Acknowledging the contributions of others and understanding the limits of one's own knowledge.

Perseverance (in science)

Continuing to work hard despite obstacles or difficulties.

Providing Evidence

Supporting a theory or claim with data and evidence, not just opinions.

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Creative and innovative

Approaching problems with originality and inventiveness.

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Technology

The use of scientific knowledge for practical purposes.

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Purpose of Gems

The purpose of gems is to provide beauty and adornment.

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Valuable minerals (gems)

Diamonds, rubies, emeralds are example of these.

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Gemstone

Category of precious stones that are used for ornamentation.

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Aesthetic Value (of gems)

Gems' worth to humans.

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Value of Gold and Silver

Gold and silver are valuable because they are rare and have important uses.

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White Dwarf

The final compact state of a small to medium sized star.

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Brown Dwarf

Objects that have some characteristics of stars but not enough mass to sustain hydrogen-1 fusion reactions.

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Source of white dwarf's glow

Hot and dense core of a dead star.

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Primary outcome of a supernova

Elements heavier than iron are created.

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Cause of Pulsar's radio waves

Rapid rotation and strong magnetic field emit periodic bursts of radio waves.

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Why Quasars seem far

Their great distance and high redshift.

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Freezing Point of Water (°F)

32 degrees Fahrenheit.

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Celsius scale

The scale where 0 is the freezing point and 100 is the boiling point of water.

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Celsius to Fahrenheit Formula

Fahrenheit equals nine-fifths times Celsius plus thirty-two.

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Celsius Scale Basis

Based on the freezing and boiling points of water.

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'Kilo' Meaning

1000

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'Micro' Meaning

One-millionth

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Reason light cannot escape a Black Hole

Its extreme gravity.

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Black Hole vs. Nebula

A region of space with extreme gravitational force.

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Black Hole vs. Galaxy

The density.

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Creation of a Black Hole

The collapse of a massive star at the end of its life.

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Extreme Density of a Black Hole

Its infinite gravitational pull.

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Source of Black Hole light and microwave radiation

Active galactic nuclei.

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Cause of Black Hole's infinite gravitational attraction

Density and gravity

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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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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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