AQA Physics Unit 2 (P2) Mindmap
Physics Unit 2 mindmap!
- Created by: Triciaaa
- Created on: 05-01-13 17:01
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- Physics Unit 2
- Forces and their effects
- Thinking distance - drugs, alcohol, tiredness
- Braking distance - adverse road conditions, weather, tyres
- Velocity time graph: acceleration = gradient, distance = area
- Distance time graph: speed = gradient (d/t)
- Kinetic energy of objects speeding up or down
- Work done = when a force causes an object to move
- Momentum p=mv (p is momentum kg m/s)
- Safety with momentum = increase in time, decrease change in momentum, less force exerted
- Currents in an electrical circuit
- pd - energy transferred per coloumb of charge between 2 points
- LED = uses small currents, remote controls
- LDR = light, decrease dark, increase
- Thermistor - temp = hot- drops,cold-goes up
- Mains electricity
- RCCB - Residual Current Circuit Breaker
- Fast sensitive resettable
- bigger than fuse, expensive
- AC: Amplitude: no. of squares (up) x ygain unit
- AC: Time period: no. of squares (across) x time unit
- DC: pd: no. of squares (up) x ygain unit
- Radioactive substances
- background radiation cosmic, radon, rocks, nuclear weapons and tests
- Alpha
- weak penetration
- strong ionising
- short range
- Beta
- moderately ionising
- moderately penetrating
- long range
- Gamma
- weak ionising
- Strong penetration
- large range in air
- Nuclear fission and fusion
- Fusion - doesnt produce radiactive waste
- Fusion releases more energy than fission
- protostar, main sequence, red giant, white, black
- protostar,main sequencestar, red super giant, supernova, neutron, hole
- Forces and their effects
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