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AQA Physics Paper 1 Revision Flashcards
Cards in this deck (35)
- 1Give me the equation for efficiencyEfficiency = Useful output energy transfer ÷
Total input energy transfer - 2Give the word equation for potential differencePotential difference = Current x Resistance
- 3Give the symbol equation for potential differenceV = A x Ω
- 4What does an Ammeter do?Measures the current in Amps flowing through the test wire
- 5What does a Voltmeter do?Measures across the TEST wire in volts
- 6Describe J.J Thomson's Plum Pudding ModelThomson thought atoms were spheres of positive charge with negative electrons stuck in it- like a plum pudding
- 7Describe the experiment that leads to the Nuclear model of the atom-Scientists fired alpha particles at gold foil
-They expected the alpha particles to go straight through the sheet
-Some particles deflected, means the nucleus must have a positive charge
-Most alpha particles went through, meaning the nucleus is mostly empty space - 8What is the half-life?The amount of time taken for the number of radioactive nuclei in an isotope to halve
- 9What does a short half life mean?The source is dangerous and emits a large amount of radiation at the start, but quickly becomes safe
- 10What does a long half-life mean?Source releases small amounts of radiation over a long period of time
- 11What is a vector?A quantity that has direction AND magnitude
- 12Name FIVE vector quantitiesForce, velocity, displacement, acceleration and momentum
- 13Name FIVE scalar quantitiesSpeed, distance, mass, temperature and time
- 14How do you calculate Weight?Weight = Mass x Gravitational Field Strength
- 15What is a moment?The turning effect of a force
- 16What is the equation for the size of the moment?Moment = Force x Distance
- 17What is the equation for pressure?Pressure = Force/Area of surface
- 18What's the equation for pressure at a DEPTH?Pressure = Height of liquid container x Gravitational field strength x density
- 19When will an object float?If it's weight is equal to the upthrust
- 20What is the equation for acceleration?Acceleration = Change in velocity/Time
- 21What is the equation for CONSTANT acceleration?Final velocity^2 - Initial velocity ^2 = 2 x acceleration x distance
- 22What is the equation for stopping distance?Stopping distance = Thinking Distance + Breaking Distance
(Stop, Break and Think) - 23Give me the equation for momentummomentum = mass x velocity
- 24Describe a transverse waveOscillations are perpendicular (90 degrees) to the direction of energy transfer
- 25Name three transverse wavesEM waves, ripples and waves in water, wave on a string
- 26Describe longitudinal wavesParallel oscillations to the direction of energy transfer
- 27Name two longitudinal waves-Sound waves, ultrasound
-Seismic waves - 28How do you calculate wavespeed?Wave speed = Frequency x Wavelength
- 29What is a specular reflection?When a wave is reflected in a single direction
- 30What is a diffuse reflection?When a wave is reflected on a rough surface and the waves are scattered in different directions
- 31Name the EM spectrum from the largest wavelengths to the smallestRadio Waves, Micro Waves, Infra Red, Visible Light, UV, X- Rays, Gamma Rays
(Raging Martians Invade Venus Using X-ray Guns) - 32What are radio waves used for?Communication in long-wave radio and Bluetooth
- 33Give two uses of microwavesSatellites in space and microwave ovens
- 34What can infrared be used for?To increase or monitor temperature
- 35What is a perfect black body?An object that absorbs all of the radiation that hits it
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- Flashcards on AQA Physics Paper 1 Revision Flashcards, created by Catherine Gannon on 05/03/2018.
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