Atomic theory
all objects consist of _________ that constantly move
Atoms
the movement of heat from a warmer object to a cooler object
Heat transfer
occurs with moving fluids through the circulation of currents from one region to another
convection
energy collected from Earth's crust.
geothermal energy
The ability of some elements to give off nuclear radiation as a result of a change in the atoms nucleus.
Radioactivity
Because All matter moves all matter has
Kinetic energy
a substance that conducts heat well
Thermal conductor
the transfer of energy through space, or matter by waves or rays
RADIATION
organic matter such as crops or waste products transformed to produce fuel
Biomass
the use of the radioactivity of uranium to heat water and produce steam.
nUCLEAR pOWER
energy transferred between substances of different temperatures
Heat
the amount of heat needed to raise a temperature of 1 g of water by 1°C
Calories
heat engine that burns fuel outside of the engine.
External combustion engine
generate electricity due to the uneven distribution of solar radiation that produces wind
Wind machines
Nuclear energy is sometimes referred to as ______________________ because it is the energy stored in the nucleus of an atom.
atomic energy
heat always flows from
warmer objects to colder objects.
the amount of heat required to vaporize a certain amount of a substance to change a liquid to a gas
The heat of vaporization
fanbelts that are rotated at high speeds, and produce kinetic energy from steam
Turbines
also called a photo cell, is a device that converts sunlight directly into electrical energy
A solar cell
discovered radioactivity in 1896 by accident.
French scientist, Henri Becquerel
a substances ability to absorb the kinetic energy of heat
Specific Heat
the unit used to express the heat of fusion
calories per gram c/g
liquid fossil fuels form from microscopic plants, animals, and marine organisms.
Oil or petroleum
a mixture of methane and other gases formed from decomposed marine organisms.
Natural gas
discovered two other radioactive elements, polonium and radium
Polish scientist Marie Curie