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Energy Unit Vocabulary

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  • Transfer
    energy moving from object to object
  • Thermal Energy
    TE; energy of heat
  • Velocity-Time Graph
    a line graph that shows the velocity, on the y-axis, and the time, on the x-axis, of an object
  • Slope
    the steepness of a line on a graph
  • Law of Conservation of Energy
    energy cannot be created or destroyed, only transferred or converted
  • Inference
    a conclusion gained from the observations
  • Elastic Potential Energy
    EPE; energy in an elastic object , the object needs to be stretched in order to activate it
  • Joules
    J; the units of measurement of energy
  • Conversion
    energy changing from one type to another
  • Rate of Change
    how something changes over time; example changes in speed
  • Friction
    causes objects to slow down and stop; energy is transferring & converting from KE to TE
  • Vector
    a value or amount and a direction
  • Chemical Potential Energy
    CPE; energy stored in chemical bonds; for example food or gasoline
  • Observation
    information obtained through the 5 senses.
  • Kinetic Energy
    KE; energy of motion
  • linear relationship
    straight diagonal line on a graph
  • Speed
    how fast an object is moving
  • Energy Giver
    object that gives energy to another object; its energy goes down
  • Stored Energy
    potential energy; energy that isn't being currently used but can be activated
  • Mass
    the amount of matter in an object, similar to weight
  • Chain Energy Transfer
    when energy moves between multiple objects
  • Surroundings
    everything outside the system
  • Calories
    the stored (potential) energy in food
  • Velocity
    speed and the direction
  • System
    the object of interest, the thing we are examining; example the cart/band system
  • Energy Receiver
    object that gets energy from another object; its energy goes up
  • Negligible Friction
    when friction is so small it can be ignored
  • Energy Diagram
    a diagram that shows energy types and movement between objects
  • Proportional Relationship
    when two objects have a relationship where they increase or decrease at the same rate; drawn on a graph with a linear relationship
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