physics Flashcards
biofuel
any fuel taken from living or recently living materials, such as animal waste
carbon-neutral
a biofuel from a living organism that takes in as much carbon dioxide from the atmosphere as is released when the fuel is burned
geothermal energy
energy released by radioactive substances deep within the Earth
national grid
the network of cables and transformers used to transfer electricity from power stations to consumers (i.e., homes, shops, offices, factories etc.)
nuclear fuel
substance used in nuclear reactors that releases energy due to nuclear fission
nucleus
tiny positively charged object composed of protons and neutrons at the centre of every atom
reactor core
the thick steel vessel used to contain fuel rods, control rods and the moderator in a nuclear fission reactor
renewable energy
energy from natural sources that is always being replenished so it never runs out
Vector
A vector is an object that has both a magnitude and a direction.
Scalar
a physical quantity that is completely described by its magnitude.
displacement
the difference between the initial position of something (such as a body or geometric figure) and any later position.
velocity
quantity that designates how fast and in what direction a point is moving
Distance
speed x time
Energy
potential difference x Charge
Charge
current x time
