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BMMS 6Science Ch 12
BMMS Science Ch 12 - Energy and Material Resources
Question | Answer |
---|---|
fuel | substance that provides energy |
energy transformation | a change from one form or energy to another, energy conversion |
combustion | burning |
fossil fuels | energy-rich substances formed from the remains of organisms |
hydrocarbons | chemical compounds that contain carbon and hydrogen |
petroleum | another name for oil |
refinery | factory in which crude oil is heated and separated into fuels and other products |
petrochemicals | compounds that are made from oil |
solar energy | energy from the sun |
hydroelectric power | electricity produced by flowing water |
biomass fuels | made from material that was once part of a living thing |
gasohol | alcohol and gasoline mixed together |
geothermal energy | intense heat from Earth's interior that warms the magma |
tides | regular rise and fall of Earth's waters along its shores. |
nucleus | central core of an atom that contains the protons and neutrons |
nuclear fission | splitting of an atom's nucleus into two smaller nuclei |
reactor vessel | part of nuclear reactor where nuclear fission occurs |
fuel rods | hold uranium pellets used in a fission reaction |
control rods | made of cadmium, inserted between fuel rods to slow the speed of the fission reaction |
meltdown | when fuel rods generate so much heat that they start to melt |
nuclear fusion | combining of two atomic nuclei to produce a singular larger nucleus |
efficiency | percentage of energy that is actually used to perform work |
insulation | layer of material that traps air to help block heat flow between the air inside and outside a building |
energy conservation | reducing energy use |