Tech Bowl 1

A type of system that uses circulating pumps and fans to collect and distribute heat.

Active Solar Energy Collection

Any source of energy other than fossil fuels that is used for constructive purposes.

Alternative Energy

The unit of electric current in the meter-kilogram-second system of units. Referred to as amp and symbolized as A.

Ampere

the transfer of heat through matter by molecular activity; Energy is transferred through collisions from one molecule to another

Conduction

the transfer of heat by the movement of a mass or substance; it can take place only in fluids

Convection

The net transfer of electric charge

Current

the energy of moving electric charges

Electrical Energy

A form of energy caused by the movement of electrons.

Electricity

A form of energy that travels through space as waves.

Electromagnetic Energy

the process in which an electric current is used to produce a chemical reaction, such as the decomposition of water

Electrolysis

the ability to do work or cause change

Energy

a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work

Entropy

a law that states that the internal energy in a system remains constant and the change in thermal energy of a system is equal to the work done on the system.

First Law of Thermodynamics

Individual fuel cells that are combined in series.

Fuel Cell Stack

Energy in transit due to a temperature difference between the source from which the energy is coming and a sink toward which the energy is going

Heat

Absolute temperature scale

Kelvin

A straight line that comes closest to the points on a scatter plot

Line of Best Fit

unit that measures the resistance of an electric current

Ohm

States that the direct current flowing in an electric circuit is directly proportional to the voltage applied to the circuit

Ohm's Law

Systems that do not make use of any externally powered, moving parts, such as circulation pumps, to move heated water or air.

Passive Solar Energy Collection

Stages a product goes through from concept and use to eventual withdrawal from the market place.

Product Development Lifecycle

the transfer of energy by electromagnetic waves

Radiation

A resource that can be replaced when needed.

Renewable Energy

the measurement of how difficult it is for charges to flow through a material

Resistance

The measure of resistance to heat flow

R-value

a law that states all natural processes proceed in a preferred direction

Second Law of Thermodynamics

A measure of the average energy of motion of the particles of a substance

Temperature

two objects are at the same temperature; there is no flow of heat between them

Thermal Equilibrium

A part of the physical world as described by its thermodynamic properties such as temperature, volume, pressure, concentration, surface tension, and viscosity.

Thermodynamic System

the study of heat and its transformation to different forms of energy

Thermodynamics

A measure of thermal transmittance through a material

U-value

The unit of potential difference symbolized as V.

Volt

The potential difference measured in volts. The amount of work to be done to move a charge from one point to another along an electric circuit.

Voltage

the law that if two bodies are in thermal equilibrium with a third body then the first two bodies are in thermal equilibrium with each other

Zeroth Law of Thermodynamics

energy derived from sources that do not use up natural resources or harm the environment

Alternative Energy

the basic unit of electric current adopted under the Systeme International d'Unites

Ampere

Plant materials and animal waste used especially as a source of fuel.

Biomass

The net transfer of electric charge (electron movement along a path) per unit of time.

Current

Energy caused by the movement of electrons.

Electrical Energy

The flow of electrical power or charge

Electricity

The production of electricity in conductors with the use of magnets

Electromagnetic Induction

The ratio of the useful energy delivered by a dynamic system to the energy supplied to it

Effiency

A fundamental entity of nature that is transferred between parts of a system in the production of physical change within the system and usually regarded as the capacity for doing work

Energy

Changing one form of energy to another

Energy Conservation

An organization that works to develop and enforce regulations that implement environmental laws enacted by Congress

Environmental Protection Agency

A natural fuel such as coal or gas, formed in the geological past from the remains of living organisms

Fossil Fuel

A dynamo or similar machine for converting mechanical energy into electricity

Generator

The use of heat from within the Earth or from the atmosphere near oceans

Geothermal Energy

The state when objects are not yet in motion

Gravitational Energy