Definitions
The Law of Conservation of Energy
What is Energy can neither be created nor destroyed, only changed in form?
Heat
What is energy in transit from a warm body to a cooler one?
Work
What is a mechanical process in which a force is applied to an object, and the object moves a certain distance in the direction of the force?
Internal energy
What is the sum of all the kinetic energies of the individual particles of a substance?
Einstein's most famous equation.
Fluid
What is a substance that flows, liquid or gas?
What are infrared radiation, thermal conduction, and convection?
Work always results in this.
What is the transfer of energy?
The _______________ a substance is, the higher its internal energy is.
What is hotter?
In a nuclear reaction some of the mass of the atoms is converted directly into this.
What is energy?
What is heat transfer when energy moves as waves in the infrared region of the electromagnetic spectrum?
If I use cool water to thaw some meat for dinner, the heat transfer from the water to the meat will only occur until this happens.
What is thermal equilibrium?
An archer works on a bow, so the bow now has this.
What is potential energy?
A child goes down a slide which transforms the gravitational potential energy into these two forms of energy.
What are kinetic energy and heat from friction?
The idea that mass and energy can be transformed one into the other.
What is mass-energy equivalence?
Conduction
What is heat transfer by increased vibration of atoms, and the faster vibration spreads to surrounding atoms?
An object's surface temperature can be assessed by measuring this.
What is infrared radiation?
One car pushes another car. The second car now has this.
What is kinetic energy?
A substance can have potential energy from being in one of three types of fields.
What are gravitational, electrical, or magnetic fields?
These processes seem to be an exception to the law of the conservation of energy.
What are fusion and fission?
Convection
What is the process of heat transfer in fluids. As the fluid is heated its atoms move faster and the fluid expands, becoming less dense, so it rises?
A radiator heats a room through this form of heat.
What is convection?
A crane does work on a bucket. The bucket now has this.
What is gravitational potential energy?
The movement of the particles of a gas (atoms or molecules) and the overall movement of an object such as a football are both a type of this kind of energy.
What is kinetic?
Einstein's famous equation can account for the seeming exception to the law of the conservation of energy by referring to the law this way.
What is the conservation of mass-energy?