Gravity and Gravitation Quiz
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Questions and Answers

What did Sir Isaac Newton propound in relation to gravitational force?

  • Universal law of relativity
  • Universal law of thermodynamics
  • Universal law of magnetism
  • Universal law of gravitation (correct)

    • What is the main characteristic of the heliocentric model?

  • The Sun at the center of the solar system (correct)
  • The Milky Way galaxy at the center of the solar system
  • The Earth at the center of the solar system
  • The Moon at the center of the solar system

    • What is the approximate acceleration due to gravity on the surface of the Earth?

  • 20.0 m/s²
  • 15.0 m/s²
  • 5.0 m/s²
  • 9.8 m/s² (correct)

    • How does mass affect acceleration due to gravity?

    <p>Heavier masses experience greater acceleration</p> Signup and view all the answers

    What was demonstrated by the coin and feather experiment?

    <p>Resistance in a medium affects falling velocity</p> Signup and view all the answers

    What is the force between two or more heavenly bodies according to gravitational force?

    <p>Directly proportional to their masses and inversely proportional to the square of the distance between them</p> Signup and view all the answers

    What is the gravitational field determined by?

    <p>The mass of the heavenly body and the distance between the body and unit mass object</p> Signup and view all the answers

    What is mass?

    <p>The quantity of matter contained in a body</p> Signup and view all the answers

    How can mass be measured?

    <p>By balancing the object against known masses</p> Signup and view all the answers

    What is gravity?

    <p>The force that attracts bodies towards the center of a heavenly body</p> Signup and view all the answers

    Why do satellites not fall while revolving around the Earth?

    <p>Because gravity changes into centripetal force, which is equal in value to the gravitational force</p> Signup and view all the answers

    What is weight?

    <p>The force with which a body is attracted towards the center of a planet, directly proportional to the mass of the body and acceleration due to gravity</p> Signup and view all the answers

    Why is the effect of gravity more significant in liquids than in solids?

    <p>Due to the weaker bonds between atoms or molecules in liquids</p> Signup and view all the answers

    The heliocentric model is a solar system model with the Sun at its ______

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

    Acceleration due to gravity is inversely proportional to the square of the ______ of a planet

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

    Gravity is a force that attracts bodies towards the ______ of the Earth

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

    Mass affects the acceleration due to gravity, with heavier masses experiencing greater ______

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

    At the center of a planet, there is no acceleration due to ______

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

    The coin and feather experiment demonstrated that resistance in a medium affects the falling velocity, but not the acceleration due to ______, which is the same for all masses

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

    Gravitational field depends on the ______ of the heavenly body and the distance between the body and unit mass object

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

    Mass is directly proportional to both density and ______

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

    Satellites do not fall while revolving around the Earth because gravity changes into centripetal force, which is equal in value to the ______ force

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

    Acceleration due to gravity is inversely proportional to the square of the distance from the center of a planet and directly proportional to the ______ of the planet

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

    Weight is the force with which a body is attracted towards the center of a planet, directly proportional to the mass of the body and acceleration due to ______

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

    Effect of gravity is more significant in liquids than in solids due to the weaker bonds between atoms or molecules in ______

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

    Tides rise in the sea due to the gravitational force between the Earth and the ______

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

    A satellite can revolve around a planet without any extra energy due to the centripetal force caused by the ______ force

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

    The universal gravitational constant is a constant value representing the force of gravity between two unit masses kept at a distance of 1 ______

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

    Gravity and gravitation are related concepts, with gravity being the force and gravitation being the universal law governing the force of ______

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

    Study Notes

    • Heliocentric model is a solar system model with the Sun at its center
    • Gravitational force is a force between two or more heavenly bodies, directly proportional to their masses and inversely proportional to the square of the distance between them
    • Sir Isaac Newton propounded the universal law of gravitation stating the relation between gravitational force, mass, and distance
    • Gravity is a force that attracts bodies towards the center of the Earth
    • Acceleration due to gravity is inversely proportional to the square of the radius of a planet
    • Gravity affects water flow in rivers and the movement of aircraft
    • Acceleration due to gravity is approximately 9.8 m/s² on the surface of the Earth
    • Mass affects the acceleration due to gravity, with heavier masses experiencing greater acceleration
    • At the center of a planet, there is no acceleration due to gravity
    • The coin and feather experiment demonstrated that resistance in a medium affects the falling velocity, but not the acceleration due to gravity, which is the same for all masses.- Gravitational field is the force experienced up to where the force is experienced around a heavenly body
    • Gravitational field depends on the mass of the heavenly body and the distance between the body and unit mass object
    • Mass is the quantity of matter contained in a body
    • Mass can be measured by balancing the object against known masses
    • Mass is directly proportional to both density and volume
    • Gravity is the force that attracts bodies towards the center of a heavenly body
    • Gravity acts towards the center of the heavenly body
    • Satellites do not fall while revolving around the Earth because gravity changes into centripetal force, which is equal in value to the gravitational force
    • Acceleration due to gravity is produced by the force of gravity towards the center of a heavenly body
    • Acceleration due to gravity is inversely proportional to the square of the distance from the center of a planet and directly proportional to the mass of the planet
    • Weight is the force with which a body is attracted towards the center of a planet, directly proportional to the mass of the body and acceleration due to gravity
    • Effect of gravity is more significant in liquids than in solids due to the weaker bonds between atoms or molecules in liquids
    • Free fall is when a body is falling or moving towards the center of a planet under the influence of gravity alone
    • Weightlessness is a condition where the weight is zero, experienced in free fall or in space where the acceleration due to gravity is zero
    • Tides rise in the sea due to the gravitational force between the Earth and the Moon
    • Gravity is stronger in liquid than in solid because of the weaker bonds between atoms or molecules in liquids
    • A satellite can revolve around a planet without any extra energy due to the centripetal force caused by the gravitational force
    • The universal gravitational constant is a constant value representing the force of gravity between two unit masses kept at a distance of 1 meter
    • The value of gravitational force and gravitational constant becomes equal under specific conditions
    • Gravity and gravitation are related concepts, with gravity being the force and gravitation being the universal law governing the force of gravity.- Jupiter: The acceleration due to gravity on its surface is 25 m/s square, meaning an object's velocity increases by 25 m per second at every second as it falls due to gravity.
    • Gravity: The acceleration due to gravity is inversely proportional to the radius (r) plus height (h). This is because the value of G, the universal gravitational constant, is inversely proportional to the square of the radius and the mass of the object.
    • Weight: Weight is directly proportional to the acceleration due to gravity, so an object has more weight at a place with greater acceleration due to gravity, such as the surface of Jupiter or at higher altitudes.
    • Comparison: The value of G is greater at higher altitudes and in planets or regions with greater mass, such as Jupiter, compared to regions with less mass, like the moon or lower altitudes.
    • Atmosphere: Earth's larger gravity keeps its atmosphere from escaping because the acceleration due to gravity is able to counteract the force that would cause the atmosphere to leave the planet.

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    Test your knowledge about the concepts of gravity, acceleration due to gravity, mass, and their effects on heavenly bodies and objects in space. Explore the relationship between universal gravitation, gravitational force, and the behavior of different celestial bodies.

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