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GenSci Lesson 1-3

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  • TRUE or FALSE: Rotational motion is important in machines because it removes the need for force.
    FALSE
  • Which parts of a bicycle demonstrate both rotational and translational motion?
    Pedal & Chain
  • What machine that has a physics concept that utilizes soundwave to see internal objects?
    Ultrasound
  • Explain what is Translational Motion?
    An object that moves from one place to another.
  • Which physics principle is primarily responsible for the cooling effect of a household refrigerator?
    Thermodynamics
  • What physics concept explains why seatbelts save lives during a sudden car crash?
    Inertia
  • What is rotational motion?
    An object that rotates arounds its axis
  • Why do chefs prefer copper-bottom pans for cooking?
    It is a good heat conductor
  • Which simple machine is most efficient for lifting heavy objects vertically?
    Pulley
  • Compound machines have a goal to minimize ___ ___ and maximize output work.
    Energy loss
  • What happens to your angular velocity if you pull your arms inwards?
    It increases
  • What must the dancer do to achieve maximum angular velocity while spinning?
    Pull arms close to body
  • What is the turning force that causes rotation called?
    Torque
  • Explain what is an inclined plane.
    A flat surface that is in a slope
  • What is the rate of change of angular velocity?
    Angular acceleration
  • What type of motion is mainly utilized in a bicycle wheel just turning?
    Rotational Motion
  • Which unit is standardly used to measure angular displacement?
    Radian
  • Which combination of simple machines is found in a pair of scissors?
    Lever and a Wedge
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