Terms : Hide Images
| 6266861883 | motion | change in position | 0 | |
| 6266861884 | reference point | another point used to describe an object's location | 1 | |
| 6266861885 | position | exact location | 2 | |
| 6266861886 | speed | distance traveled per unit of time formula: distance/time | 3 | |
| 6266861887 | velocity | speed in a given direction | 4 | |
| 6266861888 | slope | rate of change formula: rise/run | 5 | |
| 6266861889 | acceleration | increasing or decreasing speed; changing direction | 6 | |
| 6266861890 | force | push or pull | 7 | |
| 6266861891 | newton | unit measuring strength of force | 8 | |
| 6266861892 | net force | combination of acting forces | 9 | |
| 6266861893 | unbalanced forces | unequal forces that cause objects to start or stop moving or to change direction net force: greater than 0 | 10 | |
| 6266861894 | balanced forces | equal forces acting in opposite directions net force: 0 | 11 | |
| 6266861895 | friction | force two surfaces exert on each other when they rub against each other types: static, sliding, rolling, fluid | 12 | |
| 6266861896 | gravity | pulls objects toward each other | 13 | |
| 6266861897 | mass | amount of matter in an object | 14 | |
| 6266861898 | weight | force of gravity on a person or object at the surface of a planet | 15 | |
| 6266861899 | air resistance | force air exerts against a moving object | 16 | |
| 6266861900 | Newton's First Law of Motion | an object will not change whatever it is doing unless it is acted upon by an unbalanced force | 17 | |
| 6266861901 | inertia | object's resistance to a change in motion | 18 | |
| 6266861902 | Newton's Second Law of Motion | acceleration depends on the object's mass and the net force of the object | 19 | |
| 6266861903 | Newton's Third Law of Motion | for every action, there is an equal but opposite reaction | 20 | |
| 6266861904 | momentum | strength or force of something when it's moving formula: mass times velocity | 21 | |
| 6266861905 | Law of Conservation of Momentum | momentum remains the same unless outside forces act on the objects | 22 | |
| 6266861906 | work | exertion of a force on an object that causes it to move distance measured in joules | 23 | |
| 6266861907 | power | rate of work measured in watts | 24 | |
| 6266861908 | machine | device that makes something easier or more effective | 25 | |
| 6266861909 | input force | force exerted on a machine | 26 | |
| 6266861910 | output force | force exerted by a machine | 27 | |
| 6266861911 | mechanical advantage | number of times a machine increases a force exerted on it | 28 | |
| 6266861912 | efficiency | percentage of input work converted into output work higher the percentage= more efficient the machine (direct relationship) | 29 | |
| 6266861913 | Kinematics | study of motion without considering cause | 30 | |
| 6266861914 | vector | quantity with size and direction | 31 | |
| 6266861915 | scalar | quantity fully specified by size | 32 | |
| 6266861916 | distance | how far something moves | 33 | |
| 6266861917 | displacement | change in position | 34 | |
| 6266861918 | uniform | constant | 35 | |
| 6266861919 | magnitude | size of quantity; absolute value | 36 | |
| 6266861920 | direction | positive= away from origin negative= towards origin | 37 | |
| 6266861921 | freefall | when gravity is only force acting | 38 | |
| 6266861922 | deceleration | type of acceleration; slowing down | 39 | |
| 6266861923 | kinetic energy | energy possessed due to motion; "work" needed to accelerate something from rest of its velocity; since gained during acceleration, changes if speed changes formula: ½ mv (to the power of 2) | 40 | |
| 6266861924 | airfoil | part influencing control,direction, thrust, lift, or propulsion ex. wing | 41 | |
| 6266861925 | air gap | distance between hovercraft skirt and surface below | 42 | |
| 6266861926 | angle of attack | angle between airfoil and direction of wind relative to it | 43 | |
| 6266861927 | buoyancy | upward force on object immersed in fluid | 44 | |
| 6266861928 | Archimedes Principle of Buoyancy | when body is immersed in fluid at rest, experiences an upward or buoyant force = fluid's weight displaced by body | 45 | |
| 6266861929 | atmospheric pressure | pressure exerted by atmosphere at surface of earth due to weight of air above | 46 | |
| 6266861930 | skirt | fabric inflating around hovercraft; traps lift air cushion | 47 | |
| 6266861931 | bag skirt | contains flexible fabric tube surrounding it | 48 | |
| 6266861932 | Bernoulli's Principle | increase of velocity in fluid is accompanied by decrease in pressure | 49 | |
| 6266861933 | body | top surface of hovercraft | 50 | |
| 6266861934 | bow | front of hovercraft | 51 | |
| 6266861935 | centrifugal | object's inertia trying to maintain motion in straight line when forced to travel alongside curve | 52 | |
| 6266861936 | centripetal force | force pulling object toward center of circle or curve | 53 | |
| 6266861937 | fan | rotating multi-blade device for moving volumes of air in ducts with small pressure increase | 54 | |
| 6266861938 | finger/segmented skirt | consists of several segments pressing together when inflated | 55 | |
| 6266861939 | heave | up and down motion | 56 | |
| 6266861940 | hover height | distance between bottom of hovercraft's hull and surface it is hovering over | 57 | |
| 6266861941 | hovercraft | member of (ACV) Air Cushion Vehicle that is amphibious; able to travel on water & land | 58 | |
| 6266861942 | hull | bottom of hovercraft, usually containing buoyancy foam | 59 | |
| 6266861943 | impulse | change in momentum | 60 | |
| 6266861944 | lift skirt | flexible fabric meant to trap or seal air under | 61 | |
| 6266861945 | propeller | twisted airfoil rotating center of mass, providing thrust; less blades than fan | 62 | |
| 6266861946 | roll | when port and starboard sides move up and down relative to each other | 63 | |
| 6266861947 | starboard | right side of hovercraft, when looking towards bow | 64 | |
| 6266861948 | port | left side of hovercraft, when looking towards bow | 65 | |
| 6266861949 | stern | rear of hovercraft | 66 | |
| 6266861950 | drag | any force resisting motion | 67 | |
| 6266861951 | wave impact drag | caused by hovercraft's lift skirt or hull being struck by wave; severely limits speed | 68 | |
| 6266861952 | density | mass over volume of an object formula: D=m/v | 69 | |
| 6266861953 | fluid | liquid or gas that flows & assumes shape of its container | 70 | |
| 6266861954 | viscosity | state of being thick and sticky, making it resist force, causing fluid to flow; measure of fluid possessing this property | 71 | |
| 6266861955 | Pascal's Law | if pressure is exerted on a fluid, it will be evenly distributed | 72 | |
| 6266861956 | Theory of Relativity | laws of physics are same for non-accelerating observers | 73 | |
| 6266861957 | non-relativistic | not involving or not based on Theory of Relativity | 74 | |
| 6266861958 | History of the hovercraft | Invented by Christopher Cockerell in 1956 Originally tested in 1955 Made because he wanted to build a vehicle that would float over a water's surface | 75 | |
| 6266861959 | Electrical Power = | current x voltage | 76 | |
| 6266861960 | Voltage = | current x resistance | 77 | |
| 6266861961 | Charge = | current x time | 78 | |
| 6266861962 | Average Speed = | distance / time | 79 | |
| 6266861963 | Acceleration = | Change in Velocity / Time Taken | 80 | |
| 6266861964 | Force = | Mass x Acceleration | 81 | |
| 6266861965 | Pressure Difference = | Height x Density x Gravity | 82 | |
| 6266861966 | Moment = | Force x Perpendicular Distance from Pivot | 83 | |
| 6266861967 | Pressure = | Force / Area | 84 | |
| 6266861968 | Wave Speed = | Frequency x Wavelength | 85 | |
| 6266861969 | Refractive Index = | Sin (I) / Sin (R) | 86 | |
| 6266861970 | Sin (Critical angle) = | 1 / Refractive Index | 87 | |
| 6266861971 | Energy Transfer = | Work Done | 88 | |
| 6266861972 | Work Done = | Force x Distance Moved | 89 | |
| 6266861973 | Efficiency = | Useful Energy Output / Total Energy Input | 90 | |
| 6266861974 | Weight = | Mass x Gravity | 91 | |
| 6266861975 | GPE Potential Energy = | Mass x Gravity x Height | 92 | |
| 6266861976 | Kinetic Energy = | 1/2 x Mass x V^2 | 93 | |
| 6266861977 | Density = | Mass / Volume | 94 | |
| 6266861978 | Distance Time Graphs |  | 95 | |
| 6266861979 | Velocity Time Graphs |  | 96 | |
| 6266861980 | Gravity | Force of attraction between all masses | 97 | |
| 6266861981 | Hookes Law | Extension is directly proportional to force until the spring reaches it's elastic limit | 98 | |
| 6266861982 | Solar Systems | Galaxy = large collection of stars Sun = one of many stars | 99 | |
| 6266861983 | Effects of gravity on planets | Closer you get to a star or a planet the stronger the force of attraction is, so they move quicker in orbit | 100 | |
| 6266861984 | Types of orbit | Moons and planets have slightly elliptical orbits Comets orbit the sun, they have very elliptical orbits | 101 | |
| 6266861985 | Artificial Earth Satellites | Have orbital period of 1 day = geostationary satellites, used for communications | 102 | |
| 6266861996 | Current | Rate of flow of Charge | 103 | |
| 6266861997 | Voltage | Driving force which pushes current (Electrical Power) | 104 | |
| 6266861998 | Resistance | Something which slows down the flow | 105 | |
| 6266861999 | Circuit Rules | Increase voltage = more current will flow Increase resistance = less current will flow | 106 | |
| 6266862000 | Series Circuit | Current the same Voltage = Voltage of all components | 107 | |
| 6266862001 | Parallel Circuit | Current = Current of all components Voltage the same | 108 | |
| 6266862002 | Transverse Wave Diagram |  | 109 | |
| 6266862003 | Longitudinal Wave Diagram |  | 110 | |
| 6266862004 | Examples of Transverse Waves | Electromagnetic Waves Ripple in Water | 111 | |
| 6266862005 | Examples of Longitudinal Waves | Sound + Ultrasound Shock Waves | 112 | |
| 6266862006 | Transverse Wave | Vibrations are at 90° to the direction energy is transferred | 113 | |
| 6266862007 | Longitudinal Waves | Vibrations are parallel to the direction the wave transfers energy | 114 | |
| 6266862008 | Wave Info | All waves transfer energy and information without transferring matter | 115 | |
| 6266862009 | Electromagnetic Waves | Waves have different wavelengths - continuous spectrum All transverse - Travel at same speed through a vacuum | 116 | |
| 6266862010 | Diagram of Electromagnetic Waves |  | 117 | |
| 6266862011 | Uses of Waves | Radio Waves: Communication Microwaves: Satellite Communication Infra-Red Radiation: Heating and monitor temperature Visible Light: Travel though optical fibres + Photography Ultraviolet Light: Fluorescent Lamps X-Rays: See inside things Gamma Rays: Sterilising medical equipment | 118 | |
| 6266862012 | Conduction | Process where vibrating particles pass on their kinetic energy | 119 | |
| 6266862013 | Convection | Particles from their hotter region to the cooler region and take their heat energy with them | 120 | |
| 6266862014 | Dangers of Microwaves | Yeah human body tissue internally | 121 | |
| 6266862015 | Dangers of Infra-Red | Skin Burns - Heating effect | 122 | |
| 6266862016 | Dangers of Ultraviolet | Damage surface cells and causes blindness | 123 | |
| 6266862017 | Dangers of Gamma | Cell mutation and Tissue damage - can cause cancer | 124 | |
| 6266862018 | Virtual Image |  | 125 | |
| 6266862019 | Light Refraction |  | 126 | |
| 6266862020 | Angle of Incidence is less than critical angle |  | 127 | |
| 6266862021 | Angle of Incidence is more than critical angle |  | 128 | |
| 6266862022 | Angle of Incidence is equal to critical angle |  | 129 | |
| 6266862023 | Total internal reflection - Optical fibres | Angle of Incident is always higher than critical angle, light always totally internally reflected - only stops if fibre is to sharp | 130 | |
| 6266862024 | Sankey Diagram |  | 131 | |
| 6266862025 | Power | One Watt = 1 joule of energy transferred per second | 132 | |
| 6266862026 | Human Hearing Range | 20 - 20,000 Hz | 133 | |
| 6266862027 | Renewable Energy | Wind Farms Geothermal Energy Solar Energy Hydroelectric Power | 134 | |
| 6266862028 | Brownian Motion | Small particles have a constant, rapid and random movement - small particles can move larger particles - causes pressure This discovery was proved with the use of pollen grains | 135 | |
| 6266862029 | Absolute 0 - Kelvin Scale | Absolute 0 - atoms have as little kinetic energy as possible Absolute 0 = -273°C 50 Kelvin = -223°C 15°C = 288 Kelvin | 136 | |
| 6266862030 | Uniform Magnetic Field |  | 137 | |
| 6266862031 | Loudspeaker | A.C electrical signals - from amplifier - to coil of wire - wrapped around cone Cone surrounded - permanent magnet - cause a force forwards + backwards Movements = cone vibrate = sound | 138 | |
| 6266862032 | Resistance of LDRs and Thermistors Experiments | Measure current at any know/fixed temp Measure voltage at any known/fixed temp Vary temp and take new readings Calculate and draw voltage - current graph Repete and average | 139 | |
| 6266862033 | Refraction of light experiment | Place block on sheet of paper Draw around the block Turn ray box on and shine beam of light into block use pencil to mark path of light into and out of block Remove the block, measure the angle of refraction Repeat | 140 | |
| 6266862034 | Measuring speed of sound | Person at one end with a pistol Other person at a distance a way from the pistol (e.g 500 metres) Person fires gun People with stopwatches start time when see the smoke from gun and stop when they hear the bang Average the time | 141 | |
| 6266862035 | How temperature effects Gas experiment | Use water bath to vary the temperature Calculate the volume of air in test tube before heating Measure volume of air after heating Use a narrow glass tube with liquid above the air so you can clearly see how it has expanded | 142 | |
| 6266862036 | Investigating the magnetic field experiment | Place sheet of paper on wooded bench (avoid interaction with other magnets) Place magnet on sheet of paper Place plotting compass against the magnet Mark position of compass needle on the paper with a dot Move plotting compass so that the tail of the arrow sits where the tip of the arrow was Repeat process Join dots | 143 | |
| 6266862037 | Marsden experiment Diagram |  | 144 | |
| 6266862038 | Marsden experiment | Alpha particles were detected as tiny flashes of light on screen Most alpha particles went straight thought gold foil A small number deviated as they were repelled Very few alpha particles bounced back because of the dense nucleus | 145 | |
| 6266862039 | Conclusion of Marsdens experiment | Most of atom is empty space Nucleus is small Nucleus is dense Nucleus is positive | 146 | |
| 6266862040 | Flemmings Left hand rule |  | 147 |
