Some physics words with links to relevant Twig World videos. You will need to be logged into your Twig World account to be able to view the videos but you only need to log in once then you should be fine.
Force – a force is a push or a pull
gravity/weight – the force of attraction between all matter in the Universe (Fgrav)
magnetism – the force of attraction or repulsion between magnets
electrical – the force of attraction or repulsion between charged particles
voltage – the electromotive force pushing electrons around a circuit
friction – a force that opposes motion (often causes heating) (Ffrict)
air resistance – the frictional effects of an object moving through the air (Fair)
water resistance – the frictional effects of an object moving through the water (Fwater)
upthrust – the force that holds up a floating object (either in water or air)
normal – the support force on an object that is resting on a solid surface (Fnorm)
applied – the force exerted on an object by a person or machine pushing it (Fapp)
tension – the force transmitted through a string or wire pulled tight between two objects (Ftens)
spring – the force exerted by a stretched or compressed spring (or other elastic material) (Fspring)
Pressure – the force acting over a given area, measured in N/cm2
Terminal velocity – the maximum speed achieved by a falling object
Energy – the ability of a system to do work by converting between forms of energy. Energy cannot be made or destroyed, it can only be converted from one form to another.
potential energy – stored energy
gravitational P.E. – the energy stored in an object lifted up off the ground
chemical P.E. – the energy stored in chemicals such as food, fuel & explosives
elastic P.E. – the energy stored in stretched or compressed materials
kinetic E. – the energy possessed by a moving object
thermal E. – the energy particles have because of their temperature
sound E. – changes in pressure in air (or water) that can be interpreted by our ears as sounds
light E. – a visible form of electromagnetic radiation (which also includes radio waves and x-rays)
electrical E. – a versatile form of energy that can be changed into most other forms of energy
Transducer – a device that converts energy from one form into another
Fossil fuel – a fuel produced from the fossilised remains of dead plants and animals
coal – formed from fossilised trees buried under layers of rock millions of years ago
oil – fuel formed from the fossilised remains of dead aquatic invertebrate animals. It is a complex mixture of many different hydrocarbon compounds
natural gas – colourless, odourless methane gas released by decomposing plants and animals
Density – the mass of 1 cm3 of a substance
mass – how much matter a substance is made from
volume – the amount of space an object takes up (or the capacity of a container)
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