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CM 1 Science

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  • Why don’t we sink into the ground when we stand?
    Because the ground pushes up on us with a normal force that balances gravity
  • What is air resistance?
    A force that slows down objects moving through air
  • What is a human made object placed into orbit around Earth or another planet?
    Artificial satellite
  • What is gravity?
    A force that pulls objects down toward the Earth
  • Is gravity a push or a pull?
    Pull
  • What would happen if there were no gravity?
    Everything would float and nothing would stay on the ground
  • What is an applied force?
    A push or pull given to an object by a person or another object
  • What is a space station?
    A large artificial satellite where astronauts live and conduct research in space
  • What force keeps a book from falling through a table?
    Normal force
  • What is the pulling force that occurs between two objects with mass?
    Gravitational force
  • What is the planet we live on that attracts objects toward its center?
    Earth
  • What is the Moon’s orbit?
    The path followed by the Moon as it travels around Earth
  • What does streamlined mean?
    A smooth shape that allows objects to move easily through air or water with less resistance
  • What is upthrust?
    The upward force that pushes objects up in water
  • If I kick a ball what force am I using?
    Applied force
  • If you push a box lightly and then harder what changes?
    The box moves faster or farther because a stronger applied force is used
  • What is a normal force?
    The support force that pushes up from a surface to hold an object up
  • What is the Moon?
    Earth’s natural satellite that orbits our planet
  • Why does a bicycle slow down after you stop pedalling?
    Because friction and air resistance slow it down when no applied force is pushing it forward
  • What is velocity?
    The speed and direction an object moves in a particular direction
  • What is water resistance?
    A force that slows down objects moving through water
  • What is friction?
    A force that occurs when two surfaces rub against each other and slow movement
  • What is the force that pulls objects with mass toward each other?
    Gravity
  • What are orbital systems?
    A system where one object moves around another due to gravity
  • Can more than one force act on an object at the same time give an example?
    Yes a book on a table has gravity pulling down and the normal force pushing up at the same time
  • What is drag?
    A force that slows down objects moving through a fluid such as air or water
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