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13 Chapter 13 energy

Energy transformations and energy conversions.

QuestionAnswer
energy The ability to do work or cause either a physical or chemical change is called ______
transferred When an object or living thing does work on another object, some of its energy is ____ to that object.
power If the transfer of energy is work, then ___ power is the rate at which energy is transferred or the amount of energy transferred in a unit of time.
watt Power is measured in what? Exactly!
kinetic energy The energy an object has due to its motion is called ____.
double, quadruple since kinetic energy = 1/2 x Mass x (velocity squared), if I double the mass I ___ the kinetic energy and if I double the speed, I ___ the kinetic energy.
potential energy The energy that results from the position or shape of an object is called ____ which has the ability to do work.
gravitational The potential energy related to an objects height is called ___.
eleastic The potential energy associated with objects that can be stretched or compressed is called ___.
mechanical The form of energy that has both potential and kinetic energy (throwing a football) is called ____. The total is 100%.
chemical bonds Chemical energy is energy stored due to ____ which binds atoms into molecules.
inverse If the total mechanical energy is 100% the amount of potential energy is ___ to the amount of kinetic energy. If one goes up the other has to go down to maintain 100%.
particles Forms of energy associated with the ______ of objects include thermal energy, electrical energy, chemical energy, nuclear energy, and electromagnetic energy.
thermal energy The TOTAL potential and kinetic energy of the particles in an object is called ____.
Temperature The AVERAGE kinetic energy of the particles in an object is called ____
electrical energy The energy of electric charges moving or stored. It can be kinetic ( or if stored potential energy (static electricity)
nuclear energy A type of potential energy stored in the nucleus of an atom.
electromagnetic energy (EM) The sunlight that you see each day is ____ that travels in waves from the sun. It has electrical and magnetic properties. The EM for EMpty - only form of energy that can travel without matter through empty outerspace.
energy transformation A change from one form of energy to another is called an _____.
multiple Striking a match is an example of ___ energy transformations - the mechanical energy of moving the match produces a friction force that produces thermal energy that starts a chemical reaction on the match producing light, heat and an odor.
lowest Since total energy is 100%, if an object is at its ___ point, it has the least potential energy, and must therefore have the most kinetic energy or greatest speed.
highest Since total energy is 100%, at it's highest point the object has the most potential energy and the least kinetic energy, therefore it is at its slowest speed.
law of conservation The ___ of energy means the total energy does not change it changes forms. The ___ of matter means the total number and type of atoms does not change, it just changes forms.
conservation means the total does not change.
matter matter is anything that has mass and takes up space.